LeetCode Solutions in TypeScript

A collection of LeetCode solutions implemented in TypeScript. This repository contains my solutions to various LeetCode problems, organized by problem ID and name.

📁 Project Structure

Each problem is organized in its own directory following the format:

{problem_id}-{problem_name}/
├── README.md                    # Problem description and constraints
├── Solution.md                  # Solution explanation and approach
└── {problem_id}-{problem_name}.ts  # TypeScript solution implementation

🚀 How to Use

1. Navigate to the problem directory you're interested in
2. Read the README.md for problem description and constraints
3. Check the Solution.md for detailed solution explanation, approach, and complexity analysis
4. Review the {problem_id}-{problem_name}.ts file for the TypeScript implementation

📝 Current Solutions

📋 Arrays

Prefix Sum & Subarray/Product Problems

• 0713. Subarray Product Less Than K

• 3539. Find Sum of Array Product of Magical Sequences

• 3542. Minimum Operations to Convert All Elements to Zero

• 2348. Number Of Zero Filled Subarrays

• 0713. Subarray Product Less Than K

• 2348. Number Of Zero Filled Subarrays

• 3587. Minimum Adjacent Swaps To Alternate Parity

• 3599. Partition Array To Minimize Xor

• 3689. Maximum Total Subarray Value I

• 0713. Subarray Product Less Than K

• 2348. Number Of Zero Filled Subarrays

• 3587. Minimum Adjacent Swaps To Alternate Parity

• 3599. Partition Array To Minimize Xor

• 3689. Maximum Total Subarray Value I

• 0713. Subarray Product Less Than K

• 2348. Number Of Zero Filled Subarrays

• 3587. Minimum Adjacent Swaps To Alternate Parity

• 3599. Partition Array To Minimize Xor

• 3689. Maximum Total Subarray Value I

• 0713. Subarray Product Less Than K

• 2348. Number Of Zero Filled Subarrays

• 3587. Minimum Adjacent Swaps To Alternate Parity

• 3599. Partition Array To Minimize Xor

• 3689. Maximum Total Subarray Value I

• 0713. Subarray Product Less Than K

• 2348. Number Of Zero Filled Subarrays

• 3587. Minimum Adjacent Swaps To Alternate Parity

• 3599. Partition Array To Minimize Xor

• 3689. Maximum Total Subarray Value I

Sorting, Pairing & Removal

• 0073. Set Matrix Zeroes

• 0075. Sort Colors

• 3507. Minimum Pair Removal to Sort Array I

• 3510. Minimum Pair Removal to Sort Array II

• 3536. Maximum Product of Two Digits

• 1233. Remove Sub Folders From The Filesystem

• 2099. Find Subsequence Of Length K With The Largest Sum

• 3362. Zero Array Transformation Iii

• 3551. Minimum Swaps To Sort By Digit Sum

• 0014. Longest Common Prefix

• 0976. Largest Perimeter Triangle

• 0014. Longest Common Prefix

• 0049. Group Anagrams

• 0075. Sort Colors

• 0869. Reordered Power Of 2

• 0976. Largest Perimeter Triangle

• 1233. Remove Sub Folders From The Filesystem

• 2014. Longest Subsequence Repeated K Times

• 2099. Find Subsequence Of Length K With The Largest Sum

• 2327. Number Of People Aware Of A Secret

• 2402. Meeting Rooms Iii

• 2406. Divide Intervals Into Minimum Number Of Groups

• 2410. Maximum Matching Of Players With Trainers

• 2616. Minimize The Maximum Difference Of Pairs

• 3362. Zero Array Transformation Iii

• 3424. Minimum Cost To Make Arrays Identical

• 3507. Minimum Pair Removal To Sort Array I

• 3510. Minimum Pair Removal To Sort Array Ii

• 3536. Maximum Product Of Two Digits

• 3538. Merge Operations For Minimum Travel Time

• 3551. Minimum Swaps To Sort By Digit Sum

• 3572. Maximize Ysum By Picking A Triplet Of Distinct Xvalues

• 3644. Maximum K To Sort A Permutation

• 3649. Number Of Perfect Pairs

• 3668. Restore Finishing Order

• 0014. Longest Common Prefix

• 0049. Group Anagrams

• 0075. Sort Colors

• 0869. Reordered Power Of 2

• 0976. Largest Perimeter Triangle

• 1233. Remove Sub Folders From The Filesystem

• 2014. Longest Subsequence Repeated K Times

• 2099. Find Subsequence Of Length K With The Largest Sum

• 2300. Successful Pairs Of Spells And Potions

• 2327. Number Of People Aware Of A Secret

• 2402. Meeting Rooms Iii

• 2406. Divide Intervals Into Minimum Number Of Groups

• 2410. Maximum Matching Of Players With Trainers

• 2616. Minimize The Maximum Difference Of Pairs

• 3362. Zero Array Transformation Iii

• 3424. Minimum Cost To Make Arrays Identical

• 3507. Minimum Pair Removal To Sort Array I

• 3510. Minimum Pair Removal To Sort Array Ii

• 3536. Maximum Product Of Two Digits

• 3538. Merge Operations For Minimum Travel Time

• 3551. Minimum Swaps To Sort By Digit Sum

• 3572. Maximize Ysum By Picking A Triplet Of Distinct Xvalues

• 3644. Maximum K To Sort A Permutation

• 3649. Number Of Perfect Pairs

• 3668. Restore Finishing Order

• 0014. Longest Common Prefix

• 0049. Group Anagrams

• 0075. Sort Colors

• 0869. Reordered Power Of 2

• 0976. Largest Perimeter Triangle

• 1233. Remove Sub Folders From The Filesystem

• 2014. Longest Subsequence Repeated K Times

• 2099. Find Subsequence Of Length K With The Largest Sum

• 2327. Number Of People Aware Of A Secret

• 2402. Meeting Rooms Iii

• 2406. Divide Intervals Into Minimum Number Of Groups

• 2410. Maximum Matching Of Players With Trainers

• 2616. Minimize The Maximum Difference Of Pairs

• 3362. Zero Array Transformation Iii

• 3424. Minimum Cost To Make Arrays Identical

• 3507. Minimum Pair Removal To Sort Array I

• 3510. Minimum Pair Removal To Sort Array Ii

• 3536. Maximum Product Of Two Digits

• 3538. Merge Operations For Minimum Travel Time

• 3551. Minimum Swaps To Sort By Digit Sum

• 3572. Maximize Ysum By Picking A Triplet Of Distinct Xvalues

• 3644. Maximum K To Sort A Permutation

• 3649. Number Of Perfect Pairs

• 3668. Restore Finishing Order

• 0014. Longest Common Prefix

• 0049. Group Anagrams

• 0075. Sort Colors

• 0869. Reordered Power Of 2

• 0976. Largest Perimeter Triangle

• 1233. Remove Sub Folders From The Filesystem

• 2014. Longest Subsequence Repeated K Times

• 2099. Find Subsequence Of Length K With The Largest Sum

• 2327. Number Of People Aware Of A Secret

• 2402. Meeting Rooms Iii

• 2406. Divide Intervals Into Minimum Number Of Groups

• 2410. Maximum Matching Of Players With Trainers

• 2616. Minimize The Maximum Difference Of Pairs

• 3362. Zero Array Transformation Iii

• 3424. Minimum Cost To Make Arrays Identical

• 3507. Minimum Pair Removal To Sort Array I

• 3510. Minimum Pair Removal To Sort Array Ii

• 3536. Maximum Product Of Two Digits

• 3538. Merge Operations For Minimum Travel Time

• 3551. Minimum Swaps To Sort By Digit Sum

• 3572. Maximize Ysum By Picking A Triplet Of Distinct Xvalues

• 3644. Maximum K To Sort A Permutation

• 3649. Number Of Perfect Pairs

• 3668. Restore Finishing Order

• 0014. Longest Common Prefix

• 0049. Group Anagrams

• 0075. Sort Colors

• 0869. Reordered Power Of 2

• 0976. Largest Perimeter Triangle

• 1233. Remove Sub Folders From The Filesystem

• 2014. Longest Subsequence Repeated K Times

• 2099. Find Subsequence Of Length K With The Largest Sum

• 2327. Number Of People Aware Of A Secret

• 2402. Meeting Rooms Iii

• 2406. Divide Intervals Into Minimum Number Of Groups

• 2410. Maximum Matching Of Players With Trainers

• 2616. Minimize The Maximum Difference Of Pairs

• 3362. Zero Array Transformation Iii

• 3424. Minimum Cost To Make Arrays Identical

• 3507. Minimum Pair Removal To Sort Array I

• 3510. Minimum Pair Removal To Sort Array Ii

• 3536. Maximum Product Of Two Digits

• 3538. Merge Operations For Minimum Travel Time

• 3551. Minimum Swaps To Sort By Digit Sum

• 3572. Maximize Ysum By Picking A Triplet Of Distinct Xvalues

• 3644. Maximum K To Sort A Permutation

• 3649. Number Of Perfect Pairs

• 3668. Restore Finishing Order

Counting, Frequency & Miscellaneous

• 0002. Add Two Numbers

• 0118. Pascal's Triangle

• 0594. Longest Harmonious Subsequence

• 1290. Convert Binary Number in a Linked List to Integer

• 1498. Number of Subsequences That Satisfy the Given Sum Condition

• 1550. Three Consecutive Odds

• 1695. Maximum Erasure Value

• 1717. Maximum Score From Removing Substrings

• 1865. Finding Pairs With a Certain Sum

• 2081. Sum of k-Mirror Numbers

• 2094. Finding 3-Digit Even Numbers

• 2138. Divide a String Into Groups of Size k

• 2163. Minimum Difference in Sums After Removal of Elements

• 2210. Count Hills and Valleys in an Array

• 2235. Add Two Integers

• 2409. Count Days Spent Together

• 2411. Smallest Subarrays With Maximum Bitwise OR

• 2425. Bitwise XOR of All Pairings

• 2566. Maximum Difference by Remapping a Digit

• 2894. Divisible and Non-divisible Sums Difference

• 2918. Minimum Equal Sum of Two Arrays After Replacing Zeros

• 3487. Maximum Unique Subarray Sum After Deletion

• 3512. Minimum Operations to Make Array Sum Divisible by K

• 3527. Find the Most Common Response

• 3528. Unit Conversion I

• 3529. Count Cells in Overlapping Horizontal and Vertical Substrings

• 3531. Count Covered Buildings

• 3533. Concatenated Divisibility

• 3537. Fill a Special Grid

• 3543. Maximum Weighted K Edge Path

• 3544. Subtree Inversion Sum

• 3567. Minimum Absolute Difference in Sliding Submatrix

• 3569. Maximize Count of Distinct Primes After Split

• 3572. Maximize Y Sum by Picking a Triplet of Distinct X Values

• 3577. Count the Number of Computer Unlocking Permutations

• 3583. Count Special Triplets

• 3588. Find Maximum Area of a Triangle

• 3589. Count Prime Gap Balanced Subarrays

• 3591. Check If Any Element Has Prime Frequency

• 3592. Inverse Coin Change

• 0767. Reorganize String

• 1128. Number Of Equivalent Domino Pairs

• 1323. Maximum 69 Number

• 1504. Count Submatrices With All Ones

• 1930. Unique Length 3 Palindromic Subsequences

• 2115. Find All Possible Recipes From Given Supplies

• 2131. Longest Palindrome By Concatenating Two Letter Words

• 2561. Rearranging Fruits

• 3085. Minimum Deletions To Make String K Special

• 3343. Count Number Of Balanced Permutations

• 3438. Find Valid Pair Of Adjacent Digits In String

• 3448. Count Substrings Divisible By Last Digit

• 3508. Implement Router

• 3514. Number Of Unique Xor Triplets Ii

• 3541. Find Most Frequent Vowel And Consonant

• 3545. Minimum Deletions For At Most K Distinct Characters

• 3663. Find The Least Frequent Digit

• 3679. Minimum Discards To Balance Inventory

• 0001. Two Sum

• 3005. Count Elements With Maximum Frequency

• 3692. Majority Frequency Characters

• 3694. Distinct Points Reachable After Substring Removal

• 3704. Count No Zero Pairs That Sum To N- 0135. Candy

• 0440. K Th Smallest In Lexicographical Order

• 0679. 24 Game

• 0904. Fruit Into Baskets

• 1298. Maximum Candies You Can Get from Boxes

• 1518. Water Bottles

• 1733. Minimum Number Of People To Teach

• 1751. Maximum Number Of Events That Can Be Attended Ii

• 1792. Maximum Average Pass Ratio

• 1900. The Earliest And Latest Rounds Where Players Compete

• 1920. Build Array from Permutation

• 1931. Painting A Grid With Three Different Colors

• 2016. Maximum Difference Between Increasing Elements

• 2040. Kth Smallest Product of Two Sorted Arrays

• 2200. Find All K-Distant Indices in an Array

• 2294. Partition Array Such That Maximum Difference Is K

• 2402. Meeting Rooms III

• 2406. Divide Intervals Into Minimum Number of Groups

• 2410. Maximum Matching of Players With Trainers

• 2616. Minimize the Maximum Difference of Pairs

• 2900. Longest Unequal Adjacent Groups Subsequence I

• 2901. Longest Unequal Adjacent Groups Subsequence Ii

• 2966. Divide Array Into Arrays With Max Difference

• 3100. Water Bottles Ii

• 3201. Find the Maximum Length of Valid Subsequence I

• 3202. Find The Maximum Length Of Valid Subsequence Ii

• 3355. Zero Array Transformation I

• 3405. Count The Number Of Arrays With K Matching Adjacent Elements

• 3411. Maximum Subarray with Equal Products

• 3423. Maximum Difference Between Adjacent Elements in a Circular Array

• 3424. Minimum Cost to Make Arrays Identical

• 3439. Reschedule Meetings for Maximum Free Time I

• 3440. Reschedule Meetings for Maximum Free Time II

• 3447. Assign Elements to Groups with Constraints

• 3479. Fruits into Baskets III

• 3480. Maximize Subarrays After Removing One Conflicting Pair

• 3495. Minimum Operations To Make Array Elements Zero

• 3502. Minimum Cost To Reach Every Position

• 3505. Minimum Operations to Make Elements Within K Subarrays Equal

• 3516. Find Closest Person

• 3566. Partition Array into Two Equal Product Subsets

• 3568. Minimum Moves To Clean The Classroom

• 3573. Best Time To Buy And Sell Stock V

• 3576. Transform Array to All Equal Elements

• 3584. Maximum Product of First and Last Elements of a Subsequence

• 3587. Minimum Adjacent Swaps to Alternate Parity

• 3605. Minimum Stability Factor of Array

• 3609. Minimum Moves To Reach Target In Grid

• 3644. Maximum K To Sort A Permutation

• 3649. Number Of Perfect Pairs

• 3668. Restore Finishing Order

• 3669. Balanced K Factor Decomposition

• 3674. Minimum Operations To Equalize Array

• 3689. Maximum Total Subarray Value I

• 3698. Split Array With Minimum Difference

• 0001. Two Sum

• 0166. Fraction To Recurring Decimal

• 0440. K Th Smallest In Lexicographical Order

• 0594. Longest Harmonious Subsequence

• 0767. Reorganize String

• 0808. Soup Servings

• 1128. Number Of Equivalent Domino Pairs

• 1304. Find N Unique Integers Sum Up To Zero

• 1394. Find Lucky Integer In An Array

• 1488. Avoid Flood In The City

• 1504. Count Submatrices With All Ones

• 1550. Three Consecutive Odds

• 1733. Minimum Number Of People To Teach

• 1930. Unique Length 3 Palindromic Subsequences

• 1931. Painting A Grid With Three Different Colors

• 2016. Maximum Difference Between Increasing Elements

• 2115. Find All Possible Recipes From Given Supplies

• 2131. Longest Palindrome By Concatenating Two Letter Words

• 2210. Count Hills And Valleys In An Array

• 2235. Add Two Integers

• 2409. Count Days Spent Together

• 2561. Rearranging Fruits

• 2966. Divide Array Into Arrays With Max Difference

• 3005. Count Elements With Maximum Frequency

• 3085. Minimum Deletions To Make String K Special

• 3100. Water Bottles Ii

• 3201. Find The Maximum Length Of Valid Subsequence I

• 3343. Count Number Of Balanced Permutations

• 3405. Count The Number Of Arrays With K Matching Adjacent Elements

• 3423. Maximum Difference Between Adjacent Elements In A Circular Array

• 3438. Find Valid Pair Of Adjacent Digits In String

• 3442. Maximum Difference Between Even And Odd Frequency I

• 3447. Assign Elements To Groups With Constraints

• 3448. Count Substrings Divisible By Last Digit

• 3505. Minimum Operations To Make Elements Within K Subarrays Equal

• 3508. Implement Router

• 3509. Maximum Product Of Subsequences With An Alternating Sum Equal To K

• 3514. Number Of Unique Xor Triplets Ii

• 3527. Find The Most Common Response

• 3531. Count Covered Buildings

• 3534. Path Existence Queries In A Graph Ii

• 3539. Find Sum Of Array Product Of Magical Sequences

• 3541. Find Most Frequent Vowel And Consonant

• 3542. Minimum Operations To Convert All Elements To Zero

• 3545. Minimum Deletions For At Most K Distinct Characters

• 3569. Maximize Count Of Distinct Primes After Split

• 3576. Transform Array To All Equal Elements

• 3577. Count The Number Of Computer Unlocking Permutations

• 3583. Count Special Triplets

• 3588. Find Maximum Area Of A Triangle

• 3589. Count Prime Gap Balanced Subarrays

• 3590. Kth Smallest Path Xor Sum

• 3606. Coupon Code Validator

• 3663. Find The Least Frequent Digit

• 3664. Two Letter Card Game

• 3669. Balanced K Factor Decomposition

• 3674. Minimum Operations To Equalize Array

• 3679. Minimum Discards To Balance Inventory

• 3692. Majority Frequency Characters

• 3694. Distinct Points Reachable After Substring Removal

• 3701. Compute Alternating Sum

• 3704. Count No Zero Pairs That Sum To N

• 0001. Two Sum

• 0166. Fraction To Recurring Decimal

• 0440. K Th Smallest In Lexicographical Order

• 0594. Longest Harmonious Subsequence

• 0767. Reorganize String

• 0808. Soup Servings

• 1128. Number Of Equivalent Domino Pairs

• 1304. Find N Unique Integers Sum Up To Zero

• 1394. Find Lucky Integer In An Array

• 1488. Avoid Flood In The City

• 1504. Count Submatrices With All Ones

• 1550. Three Consecutive Odds

• 1733. Minimum Number Of People To Teach

• 1930. Unique Length 3 Palindromic Subsequences

• 1931. Painting A Grid With Three Different Colors

• 2016. Maximum Difference Between Increasing Elements

• 2115. Find All Possible Recipes From Given Supplies

• 2131. Longest Palindrome By Concatenating Two Letter Words

• 2210. Count Hills And Valleys In An Array

• 2235. Add Two Integers

• 2409. Count Days Spent Together

• 2561. Rearranging Fruits

• 2966. Divide Array Into Arrays With Max Difference

• 3005. Count Elements With Maximum Frequency

• 3085. Minimum Deletions To Make String K Special

• 3100. Water Bottles Ii

• 3201. Find The Maximum Length Of Valid Subsequence I

• 3343. Count Number Of Balanced Permutations

• 3405. Count The Number Of Arrays With K Matching Adjacent Elements

• 3423. Maximum Difference Between Adjacent Elements In A Circular Array

• 3438. Find Valid Pair Of Adjacent Digits In String

• 3442. Maximum Difference Between Even And Odd Frequency I

• 3447. Assign Elements To Groups With Constraints

• 3448. Count Substrings Divisible By Last Digit

• 3505. Minimum Operations To Make Elements Within K Subarrays Equal

• 3508. Implement Router

• 3509. Maximum Product Of Subsequences With An Alternating Sum Equal To K

• 3514. Number Of Unique Xor Triplets Ii

• 3527. Find The Most Common Response

• 3531. Count Covered Buildings

• 3534. Path Existence Queries In A Graph Ii

• 3539. Find Sum Of Array Product Of Magical Sequences

• 3541. Find Most Frequent Vowel And Consonant

• 3542. Minimum Operations To Convert All Elements To Zero

• 3545. Minimum Deletions For At Most K Distinct Characters

• 3569. Maximize Count Of Distinct Primes After Split

• 3576. Transform Array To All Equal Elements

• 3577. Count The Number Of Computer Unlocking Permutations

• 3583. Count Special Triplets

• 3588. Find Maximum Area Of A Triangle

• 3589. Count Prime Gap Balanced Subarrays

• 3590. Kth Smallest Path Xor Sum

• 3606. Coupon Code Validator

• 3663. Find The Least Frequent Digit

• 3664. Two Letter Card Game

• 3669. Balanced K Factor Decomposition

• 3674. Minimum Operations To Equalize Array

• 3679. Minimum Discards To Balance Inventory

• 3692. Majority Frequency Characters

• 3694. Distinct Points Reachable After Substring Removal

• 3701. Compute Alternating Sum

• 3704. Count No Zero Pairs That Sum To N

• 0001. Two Sum

• 0166. Fraction To Recurring Decimal

• 0440. K Th Smallest In Lexicographical Order

• 0594. Longest Harmonious Subsequence

• 0767. Reorganize String

• 0808. Soup Servings

• 1128. Number Of Equivalent Domino Pairs

• 1304. Find N Unique Integers Sum Up To Zero

• 1394. Find Lucky Integer In An Array

• 1488. Avoid Flood In The City

• 1504. Count Submatrices With All Ones

• 1550. Three Consecutive Odds

• 1733. Minimum Number Of People To Teach

• 1930. Unique Length 3 Palindromic Subsequences

• 1931. Painting A Grid With Three Different Colors

• 2016. Maximum Difference Between Increasing Elements

• 2115. Find All Possible Recipes From Given Supplies

• 2131. Longest Palindrome By Concatenating Two Letter Words

• 2210. Count Hills And Valleys In An Array

• 2235. Add Two Integers

• 2300. Successful Pairs Of Spells And Potions

• 2409. Count Days Spent Together

• 2561. Rearranging Fruits

• 2966. Divide Array Into Arrays With Max Difference

• 3005. Count Elements With Maximum Frequency

• 3085. Minimum Deletions To Make String K Special

• 3100. Water Bottles Ii

• 3201. Find The Maximum Length Of Valid Subsequence I

• 3343. Count Number Of Balanced Permutations

• 3405. Count The Number Of Arrays With K Matching Adjacent Elements

• 3423. Maximum Difference Between Adjacent Elements In A Circular Array

• 3438. Find Valid Pair Of Adjacent Digits In String

• 3442. Maximum Difference Between Even And Odd Frequency I

• 3447. Assign Elements To Groups With Constraints

• 3448. Count Substrings Divisible By Last Digit

• 3505. Minimum Operations To Make Elements Within K Subarrays Equal

• 3508. Implement Router

• 3509. Maximum Product Of Subsequences With An Alternating Sum Equal To K

• 3514. Number Of Unique Xor Triplets Ii

• 3527. Find The Most Common Response

• 3531. Count Covered Buildings

• 3534. Path Existence Queries In A Graph Ii

• 3539. Find Sum Of Array Product Of Magical Sequences

• 3541. Find Most Frequent Vowel And Consonant

• 3542. Minimum Operations To Convert All Elements To Zero

• 3545. Minimum Deletions For At Most K Distinct Characters

• 3569. Maximize Count Of Distinct Primes After Split

• 3576. Transform Array To All Equal Elements

• 3577. Count The Number Of Computer Unlocking Permutations

• 3583. Count Special Triplets

• 3588. Find Maximum Area Of A Triangle

• 3589. Count Prime Gap Balanced Subarrays

• 3590. Kth Smallest Path Xor Sum

• 3606. Coupon Code Validator

• 3663. Find The Least Frequent Digit

• 3664. Two Letter Card Game

• 3669. Balanced K Factor Decomposition

• 3674. Minimum Operations To Equalize Array

• 3679. Minimum Discards To Balance Inventory

• 3692. Majority Frequency Characters

• 3694. Distinct Points Reachable After Substring Removal

• 3701. Compute Alternating Sum

• 3704. Count No Zero Pairs That Sum To N

• 0001. Two Sum

• 0166. Fraction To Recurring Decimal

• 0440. K Th Smallest In Lexicographical Order

• 0594. Longest Harmonious Subsequence

• 0767. Reorganize String

• 0808. Soup Servings

• 1128. Number Of Equivalent Domino Pairs

• 1304. Find N Unique Integers Sum Up To Zero

• 1394. Find Lucky Integer In An Array

• 1488. Avoid Flood In The City

• 1504. Count Submatrices With All Ones

• 1550. Three Consecutive Odds

• 1733. Minimum Number Of People To Teach

• 1930. Unique Length 3 Palindromic Subsequences

• 1931. Painting A Grid With Three Different Colors

• 2016. Maximum Difference Between Increasing Elements

• 2115. Find All Possible Recipes From Given Supplies

• 2131. Longest Palindrome By Concatenating Two Letter Words

• 2210. Count Hills And Valleys In An Array

• 2235. Add Two Integers

• 2300. Successful Pairs Of Spells And Potions

• 2409. Count Days Spent Together

• 2561. Rearranging Fruits

• 2966. Divide Array Into Arrays With Max Difference

• 3005. Count Elements With Maximum Frequency

• 3085. Minimum Deletions To Make String K Special

• 3100. Water Bottles Ii

• 3201. Find The Maximum Length Of Valid Subsequence I

• 3343. Count Number Of Balanced Permutations

• 3405. Count The Number Of Arrays With K Matching Adjacent Elements

• 3423. Maximum Difference Between Adjacent Elements In A Circular Array

• 3438. Find Valid Pair Of Adjacent Digits In String

• 3442. Maximum Difference Between Even And Odd Frequency I

• 3447. Assign Elements To Groups With Constraints

• 3448. Count Substrings Divisible By Last Digit

• 3494. Find The Minimum Amount Of Time To Brew Potions

• 3505. Minimum Operations To Make Elements Within K Subarrays Equal

• 3508. Implement Router

• 3509. Maximum Product Of Subsequences With An Alternating Sum Equal To K

• 3514. Number Of Unique Xor Triplets Ii

• 3527. Find The Most Common Response

• 3531. Count Covered Buildings

• 3534. Path Existence Queries In A Graph Ii

• 3539. Find Sum Of Array Product Of Magical Sequences

• 3541. Find Most Frequent Vowel And Consonant

• 3542. Minimum Operations To Convert All Elements To Zero

• 3545. Minimum Deletions For At Most K Distinct Characters

• 3569. Maximize Count Of Distinct Primes After Split

• 3576. Transform Array To All Equal Elements

• 3577. Count The Number Of Computer Unlocking Permutations

• 3583. Count Special Triplets

• 3588. Find Maximum Area Of A Triangle

• 3589. Count Prime Gap Balanced Subarrays

• 3590. Kth Smallest Path Xor Sum

• 3606. Coupon Code Validator

• 3663. Find The Least Frequent Digit

• 3664. Two Letter Card Game

• 3669. Balanced K Factor Decomposition

• 3674. Minimum Operations To Equalize Array

• 3679. Minimum Discards To Balance Inventory

• 3692. Majority Frequency Characters

• 3694. Distinct Points Reachable After Substring Removal

• 3701. Compute Alternating Sum

• 3704. Count No Zero Pairs That Sum To N

• 0001. Two Sum

• 0166. Fraction To Recurring Decimal

• 0440. K Th Smallest In Lexicographical Order

• 0594. Longest Harmonious Subsequence

• 0767. Reorganize String

• 0808. Soup Servings

• 1128. Number Of Equivalent Domino Pairs

• 1304. Find N Unique Integers Sum Up To Zero

• 1394. Find Lucky Integer In An Array

• 1488. Avoid Flood In The City

• 1504. Count Submatrices With All Ones

• 1550. Three Consecutive Odds

• 1733. Minimum Number Of People To Teach

• 1930. Unique Length 3 Palindromic Subsequences

• 1931. Painting A Grid With Three Different Colors

• 2016. Maximum Difference Between Increasing Elements

• 2115. Find All Possible Recipes From Given Supplies

• 2131. Longest Palindrome By Concatenating Two Letter Words

• 2210. Count Hills And Valleys In An Array

• 2235. Add Two Integers

• 2300. Successful Pairs Of Spells And Potions

• 2409. Count Days Spent Together

• 2561. Rearranging Fruits

• 2966. Divide Array Into Arrays With Max Difference

• 3005. Count Elements With Maximum Frequency

• 3085. Minimum Deletions To Make String K Special

• 3100. Water Bottles Ii

• 3201. Find The Maximum Length Of Valid Subsequence I

• 3343. Count Number Of Balanced Permutations

• 3405. Count The Number Of Arrays With K Matching Adjacent Elements

• 3423. Maximum Difference Between Adjacent Elements In A Circular Array

• 3438. Find Valid Pair Of Adjacent Digits In String

• 3442. Maximum Difference Between Even And Odd Frequency I

• 3447. Assign Elements To Groups With Constraints

• 3448. Count Substrings Divisible By Last Digit

• 3494. Find The Minimum Amount Of Time To Brew Potions

• 3505. Minimum Operations To Make Elements Within K Subarrays Equal

• 3508. Implement Router

• 3509. Maximum Product Of Subsequences With An Alternating Sum Equal To K

• 3514. Number Of Unique Xor Triplets Ii

• 3527. Find The Most Common Response

• 3531. Count Covered Buildings

• 3534. Path Existence Queries In A Graph Ii

• 3539. Find Sum Of Array Product Of Magical Sequences

• 3541. Find Most Frequent Vowel And Consonant

• 3542. Minimum Operations To Convert All Elements To Zero

• 3545. Minimum Deletions For At Most K Distinct Characters

• 3569. Maximize Count Of Distinct Primes After Split

• 3576. Transform Array To All Equal Elements

• 3577. Count The Number Of Computer Unlocking Permutations

• 3583. Count Special Triplets

• 3588. Find Maximum Area Of A Triangle

• 3589. Count Prime Gap Balanced Subarrays

• 3590. Kth Smallest Path Xor Sum

• 3606. Coupon Code Validator

• 3663. Find The Least Frequent Digit

• 3664. Two Letter Card Game

• 3669. Balanced K Factor Decomposition

• 3674. Minimum Operations To Equalize Array

• 3679. Minimum Discards To Balance Inventory

• 3692. Majority Frequency Characters

• 3694. Distinct Points Reachable After Substring Removal

• 3701. Compute Alternating Sum

• 3704. Count No Zero Pairs That Sum To N

Matrix Problems

• 0417. Pacific Atlantic Water Flow

• 0778. Swim In Rising Water

• 0054. Spiral Matrix

• 0059. Spiral Matrix II

• 0885. Spiral Matrix III

• 2326. Spiral Matrix IV

• 3446. Sort Matrix by Diagonals

• 0200. Number Of Islands

• 3195. Find The Minimum Area To Cover All Ones I

• 3426. Manhattan Distances Of All Arrangements Of Pieces

• 3552. Grid Teleportation Traversal

• 3603. Minimum Cost Path With Alternating Directions Ii

• 3643. Flip Square Submatrix Vertically

• 0407. Trapping Rain Water Ii

• 0036. Valid Sudoku

• 0054. Spiral Matrix

• 0059. Spiral Matrix Ii

• 0073. Set Matrix Zeroes

• 0200. Number Of Islands

• 0407. Trapping Rain Water Ii

• 0417. Pacific Atlantic Water Flow

• 0778. Swim In Rising Water

• 0885. Spiral Matrix Iii

• 2326. Spiral Matrix Iv

• 3000. Maximum Area Of Longest Diagonal Rectangle

• 3195. Find The Minimum Area To Cover All Ones I

• 3341. Find Minimum Time To Reach Last Room I

• 3342. Find Minimum Time To Reach Last Room Ii

• 3363. Find The Maximum Number Of Fruits Collected

• 3426. Manhattan Distances Of All Arrangements Of Pieces

• 3446. Sort Matrix By Diagonals

• 3459. Length Of Longest V Shaped Diagonal Segment

• 3529. Count Cells In Overlapping Horizontal And Vertical Substrings

• 3537. Fill A Special Grid

• 3552. Grid Teleportation Traversal

• 3567. Minimum Absolute Difference In Sliding Submatrix

• 3603. Minimum Cost Path With Alternating Directions Ii

• 3643. Flip Square Submatrix Vertically

• 0036. Valid Sudoku

• 0054. Spiral Matrix

• 0059. Spiral Matrix Ii

• 0073. Set Matrix Zeroes

• 0200. Number Of Islands

• 0407. Trapping Rain Water Ii

• 0417. Pacific Atlantic Water Flow

• 0778. Swim In Rising Water

• 0885. Spiral Matrix Iii

• 2326. Spiral Matrix Iv

• 3000. Maximum Area Of Longest Diagonal Rectangle

• 3195. Find The Minimum Area To Cover All Ones I

• 3341. Find Minimum Time To Reach Last Room I

• 3342. Find Minimum Time To Reach Last Room Ii

• 3363. Find The Maximum Number Of Fruits Collected

• 3426. Manhattan Distances Of All Arrangements Of Pieces

• 3446. Sort Matrix By Diagonals

• 3459. Length Of Longest V Shaped Diagonal Segment

• 3529. Count Cells In Overlapping Horizontal And Vertical Substrings

• 3537. Fill A Special Grid

• 3552. Grid Teleportation Traversal

• 3567. Minimum Absolute Difference In Sliding Submatrix

• 3603. Minimum Cost Path With Alternating Directions Ii

• 3643. Flip Square Submatrix Vertically

• 0036. Valid Sudoku

• 0054. Spiral Matrix

• 0059. Spiral Matrix Ii

• 0073. Set Matrix Zeroes

• 0200. Number Of Islands

• 0407. Trapping Rain Water Ii

• 0417. Pacific Atlantic Water Flow

• 0778. Swim In Rising Water

• 0885. Spiral Matrix Iii

• 2326. Spiral Matrix Iv

• 3000. Maximum Area Of Longest Diagonal Rectangle

• 3195. Find The Minimum Area To Cover All Ones I

• 3341. Find Minimum Time To Reach Last Room I

• 3342. Find Minimum Time To Reach Last Room Ii

• 3363. Find The Maximum Number Of Fruits Collected

• 3426. Manhattan Distances Of All Arrangements Of Pieces

• 3446. Sort Matrix By Diagonals

• 3459. Length Of Longest V Shaped Diagonal Segment

• 3529. Count Cells In Overlapping Horizontal And Vertical Substrings

• 3537. Fill A Special Grid

• 3552. Grid Teleportation Traversal

• 3567. Minimum Absolute Difference In Sliding Submatrix

• 3603. Minimum Cost Path With Alternating Directions Ii

• 3643. Flip Square Submatrix Vertically

• 0036. Valid Sudoku

• 0054. Spiral Matrix

• 0059. Spiral Matrix Ii

• 0073. Set Matrix Zeroes

• 0200. Number Of Islands

• 0407. Trapping Rain Water Ii

• 0417. Pacific Atlantic Water Flow

• 0778. Swim In Rising Water

• 0885. Spiral Matrix Iii

• 2326. Spiral Matrix Iv

• 3000. Maximum Area Of Longest Diagonal Rectangle

• 3195. Find The Minimum Area To Cover All Ones I

• 3341. Find Minimum Time To Reach Last Room I

• 3342. Find Minimum Time To Reach Last Room Ii

• 3363. Find The Maximum Number Of Fruits Collected

• 3426. Manhattan Distances Of All Arrangements Of Pieces

• 3446. Sort Matrix By Diagonals

• 3459. Length Of Longest V Shaped Diagonal Segment

• 3529. Count Cells In Overlapping Horizontal And Vertical Substrings

• 3537. Fill A Special Grid

• 3552. Grid Teleportation Traversal

• 3567. Minimum Absolute Difference In Sliding Submatrix

• 3603. Minimum Cost Path With Alternating Directions Ii

• 3643. Flip Square Submatrix Vertically

• 0036. Valid Sudoku

• 0054. Spiral Matrix

• 0059. Spiral Matrix Ii

• 0073. Set Matrix Zeroes

• 0200. Number Of Islands

• 0407. Trapping Rain Water Ii

• 0417. Pacific Atlantic Water Flow

• 0778. Swim In Rising Water

• 0885. Spiral Matrix Iii

• 2326. Spiral Matrix Iv

• 3000. Maximum Area Of Longest Diagonal Rectangle

• 3195. Find The Minimum Area To Cover All Ones I

• 3341. Find Minimum Time To Reach Last Room I

• 3342. Find Minimum Time To Reach Last Room Ii

• 3363. Find The Maximum Number Of Fruits Collected

• 3426. Manhattan Distances Of All Arrangements Of Pieces

• 3446. Sort Matrix By Diagonals

• 3459. Length Of Longest V Shaped Diagonal Segment

• 3529. Count Cells In Overlapping Horizontal And Vertical Substrings

• 3537. Fill A Special Grid

• 3552. Grid Teleportation Traversal

• 3567. Minimum Absolute Difference In Sliding Submatrix

• 3603. Minimum Cost Path With Alternating Directions Ii

• 3643. Flip Square Submatrix Vertically

Two-Pointer & Sliding Window

• 0015. 3Sum

• 1249. Minimum Remove to Make Valid Parentheses

• 0326. Power Of Three

• 1353. Maximum Number Of Events That Can Be Attended

• 1493. Longest Subarray Of 1s After Deleting One Element

• 3477. Fruits Into Baskets Ii

• 3608. Minimum Time For K Connected Components

• 0011. Container With Most Water

• 3690. Split And Merge Array Transformation

• 0011. Container With Most Water

• 0013. Roman To Integer

• 0015. 3sum

• 0120. Triangle

• 0135. Candy

• 0165. Compare Version Numbers

• 0326. Power Of Three

• 0837. New 21 Game

• 0904. Fruit Into Baskets

• 1353. Maximum Number Of Events That Can Be Attended

• 1493. Longest Subarray Of 1s After Deleting One Element

• 1498. Number Of Subsequences That Satisfy The Given Sum Condition

• 1695. Maximum Erasure Value

• 1751. Maximum Number Of Events That Can Be Attended Ii

• 2040. Kth Smallest Product Of Two Sorted Arrays

• 2163. Minimum Difference In Sums After Removal Of Elements

• 2438. Range Product Queries Of Powers

• 3021. Alice And Bob Playing Flower Game

• 3027. Find The Number Of Ways To Place People Ii

• 3197. Find The Minimum Area To Cover All Ones Ii

• 3439. Reschedule Meetings For Maximum Free Time I

• 3477. Fruits Into Baskets Ii

• 3479. Fruits Into Baskets Iii

• 3608. Minimum Time For K Connected Components

• 3690. Split And Merge Array Transformation

• 3698. Split Array With Minimum Difference

• 0011. Container With Most Water

• 0013. Roman To Integer

• 0015. 3sum

• 0120. Triangle

• 0135. Candy

• 0165. Compare Version Numbers

• 0326. Power Of Three

• 0837. New 21 Game

• 0904. Fruit Into Baskets

• 1353. Maximum Number Of Events That Can Be Attended

• 1493. Longest Subarray Of 1s After Deleting One Element

• 1498. Number Of Subsequences That Satisfy The Given Sum Condition

• 1695. Maximum Erasure Value

• 1751. Maximum Number Of Events That Can Be Attended Ii

• 2040. Kth Smallest Product Of Two Sorted Arrays

• 2163. Minimum Difference In Sums After Removal Of Elements

• 2438. Range Product Queries Of Powers

• 3021. Alice And Bob Playing Flower Game

• 3027. Find The Number Of Ways To Place People Ii

• 3197. Find The Minimum Area To Cover All Ones Ii

• 3439. Reschedule Meetings For Maximum Free Time I

• 3477. Fruits Into Baskets Ii

• 3479. Fruits Into Baskets Iii

• 3608. Minimum Time For K Connected Components

• 3690. Split And Merge Array Transformation

• 3698. Split Array With Minimum Difference

• 0011. Container With Most Water

• 0013. Roman To Integer

• 0015. 3sum

• 0120. Triangle

• 0135. Candy

• 0165. Compare Version Numbers

• 0326. Power Of Three

• 0837. New 21 Game

• 0904. Fruit Into Baskets

• 1353. Maximum Number Of Events That Can Be Attended

• 1493. Longest Subarray Of 1s After Deleting One Element

• 1498. Number Of Subsequences That Satisfy The Given Sum Condition

• 1695. Maximum Erasure Value

• 1751. Maximum Number Of Events That Can Be Attended Ii

• 2040. Kth Smallest Product Of Two Sorted Arrays

• 2163. Minimum Difference In Sums After Removal Of Elements

• 2438. Range Product Queries Of Powers

• 3021. Alice And Bob Playing Flower Game

• 3027. Find The Number Of Ways To Place People Ii

• 3197. Find The Minimum Area To Cover All Ones Ii

• 3439. Reschedule Meetings For Maximum Free Time I

• 3477. Fruits Into Baskets Ii

• 3479. Fruits Into Baskets Iii

• 3608. Minimum Time For K Connected Components

• 3690. Split And Merge Array Transformation

• 3698. Split Array With Minimum Difference

• 0011. Container With Most Water

• 0013. Roman To Integer

• 0015. 3sum

• 0120. Triangle

• 0135. Candy

• 0165. Compare Version Numbers

• 0326. Power Of Three

• 0837. New 21 Game

• 0904. Fruit Into Baskets

• 1353. Maximum Number Of Events That Can Be Attended

• 1493. Longest Subarray Of 1s After Deleting One Element

• 1498. Number Of Subsequences That Satisfy The Given Sum Condition

• 1695. Maximum Erasure Value

• 1751. Maximum Number Of Events That Can Be Attended Ii

• 2040. Kth Smallest Product Of Two Sorted Arrays

• 2163. Minimum Difference In Sums After Removal Of Elements

• 2438. Range Product Queries Of Powers

• 3021. Alice And Bob Playing Flower Game

• 3027. Find The Number Of Ways To Place People Ii

• 3197. Find The Minimum Area To Cover All Ones Ii

• 3439. Reschedule Meetings For Maximum Free Time I

• 3477. Fruits Into Baskets Ii

• 3479. Fruits Into Baskets Iii

• 3608. Minimum Time For K Connected Components

• 3690. Split And Merge Array Transformation

• 3698. Split Array With Minimum Difference

• 0011. Container With Most Water

• 0013. Roman To Integer

• 0015. 3sum

• 0120. Triangle

• 0135. Candy

• 0165. Compare Version Numbers

• 0326. Power Of Three

• 0837. New 21 Game

• 0904. Fruit Into Baskets

• 1353. Maximum Number Of Events That Can Be Attended

• 1493. Longest Subarray Of 1s After Deleting One Element

• 1498. Number Of Subsequences That Satisfy The Given Sum Condition

• 1695. Maximum Erasure Value

• 1751. Maximum Number Of Events That Can Be Attended Ii

• 2040. Kth Smallest Product Of Two Sorted Arrays

• 2163. Minimum Difference In Sums After Removal Of Elements

• 2438. Range Product Queries Of Powers

• 3021. Alice And Bob Playing Flower Game

• 3027. Find The Number Of Ways To Place People Ii

• 3197. Find The Minimum Area To Cover All Ones Ii

• 3439. Reschedule Meetings For Maximum Free Time I

• 3477. Fruits Into Baskets Ii

• 3479. Fruits Into Baskets Iii

• 3608. Minimum Time For K Connected Components

• 3690. Split And Merge Array Transformation

• 3698. Split Array With Minimum Difference

Dynamic Programming

• 0790. Domino and Tromino Tiling

• 1432. Max Difference You Can Get From Changing an Integer

• 0790. Domino And Tromino Tiling

• 2787. Ways To Express An Integer As Sum Of Powers

• 3202. Find The Maximum Length Of Valid Subsequence Ii

• 3573. Best Time To Buy And Sell Stock V

• 3592. Inverse Coin Change

• 0790. Domino And Tromino Tiling

• 2787. Ways To Express An Integer As Sum Of Powers

• 3202. Find The Maximum Length Of Valid Subsequence Ii

• 3573. Best Time To Buy And Sell Stock V

• 3592. Inverse Coin Change

• 0790. Domino And Tromino Tiling

• 2787. Ways To Express An Integer As Sum Of Powers

• 3202. Find The Maximum Length Of Valid Subsequence Ii

• 3573. Best Time To Buy And Sell Stock V

• 3592. Inverse Coin Change

• 0790. Domino And Tromino Tiling

• 2787. Ways To Express An Integer As Sum Of Powers

• 3202. Find The Maximum Length Of Valid Subsequence Ii

• 3573. Best Time To Buy And Sell Stock V

• 3592. Inverse Coin Change

• 0790. Domino And Tromino Tiling

• 2787. Ways To Express An Integer As Sum Of Powers

• 3202. Find The Maximum Length Of Valid Subsequence Ii

• 3573. Best Time To Buy And Sell Stock V

• 3592. Inverse Coin Change

🔤 Strings

String Manipulation

• 0386. Lexicographical Numbers

• 1061. Lexicographically Smallest Equivalent String

• 1233. Remove Sub-Folders from the Filesystem

• 1768. Merge Strings Alternately

• 1930. Unique Length-3 Palindromic Subsequences

• 1948. Delete Duplicate Folders in System

• 2131. Longest Palindrome by Concatenating Two Letter Words

• 2311. Longest Binary Subsequence Less Than or Equal to K

• 2434. Using a Robot to Print the Lexicographically Smallest String

• 2667. Create Hello World Function

• 2942. Find Words Containing Character

• 3085. Minimum Deletions to Make String K-Special

• 3170. Lexicographically Minimum String After Removing Stars

• 3306. Count of Substrings Containing Every Vowel and K Consonants II

• 3330. Find the Original Typed String I

• 3333. Find the Original Typed String II

• 3335. Total Characters in String After Transformations I

• 3337. Total Characters in String After Transformations II

• 3403. Find the Lexicographically Largest String from the Box I

• 3438. Find Valid Pair of Adjacent Digits in String

• 3448. Count Substrings Divisible by Last Digit

• 3517. Smallest Palindromic Rearrangement I

• 3545. Minimum Deletions for at Most K Distinct Characters

• 3550. Smallest Index with Digit Sum Equal to Index

• 3551. Minimum Swaps to Sort by Digit Sum

• 3552. Grid Teleportation Traversal

• 3556. Sum of Largest Prime Substrings

• 3557. Find Maximum Number of Non-Intersecting Substrings

• 3582. Generate Tag for Video Caption

• 3597. Partition String

• 3602. Hexadecimal and Hexatrigesimal Conversion

• 1717. Maximum Score From Removing Substrings

• 2138. Divide A String Into Groups Of Size K

• 2566. Maximum Difference By Remapping A Digit

• 2785. Sort Vowels In A String

• 3227. Vowels Game In A String

• 3675. Minimum Operations To Transform String

• 1323. Maximum 69 Number

• 3697. Compute Decimal Representation

• 3703. Remove K Balanced Substrings

• 0020. Valid Parentheses

• 1317. Convert Integer To The Sum Of Two No Zero Integers

• 1323. Maximum 69 Number

• 1717. Maximum Score From Removing Substrings

• 1768. Merge Strings Alternately

• 2138. Divide A String Into Groups Of Size K

• 2264. Largest 3 Same Digit Number In String

• 2566. Maximum Difference By Remapping A Digit

• 2667. Create Hello World Function

• 2785. Sort Vowels In A String

• 2942. Find Words Containing Character

• 3136. Valid Word

• 3170. Lexicographically Minimum String After Removing Stars

• 3227. Vowels Game In A String

• 3304. Find The K Th Character In String Game I

• 3306. Count Of Substrings Containing Every Vowel And K Consonants Ii

• 3307. Find The K Th Character In String Game Ii

• 3330. Find The Original Typed String I

• 3333. Find The Original Typed String Ii

• 3335. Total Characters In String After Transformations I

• 3337. Total Characters In String After Transformations Ii

• 3403. Find The Lexicographically Largest String From The Box I

• 3421. Find Students Who Improved

• 3443. Maximum Manhattan Distance After K Changes

• 3445. Maximum Difference Between Even And Odd Frequency Ii

• 3504. Longest Palindrome After Substring Concatenation Ii

• 3512. Minimum Operations To Make Array Sum Divisible By K

• 3550. Smallest Index With Digit Sum Equal To Index

• 3556. Sum Of Largest Prime Substrings

• 3557. Find Maximum Number Of Non Intersecting Substrings

• 3570. Find Books With No Available Copies

• 3582. Generate Tag For Video Caption

• 3597. Partition String

• 3598. Longest Common Prefix Between Adjacent Strings After Removals

• 3602. Hexadecimal And Hexatrigesimal Conversion

• 3675. Minimum Operations To Transform String

• 3697. Compute Decimal Representation

• 3703. Remove K Balanced Substrings

• 0020. Valid Parentheses

• 1317. Convert Integer To The Sum Of Two No Zero Integers

• 1323. Maximum 69 Number

• 1717. Maximum Score From Removing Substrings

• 1768. Merge Strings Alternately

• 2138. Divide A String Into Groups Of Size K

• 2264. Largest 3 Same Digit Number In String

• 2566. Maximum Difference By Remapping A Digit

• 2667. Create Hello World Function

• 2785. Sort Vowels In A String

• 2942. Find Words Containing Character

• 3136. Valid Word

• 3170. Lexicographically Minimum String After Removing Stars

• 3227. Vowels Game In A String

• 3304. Find The K Th Character In String Game I

• 3306. Count Of Substrings Containing Every Vowel And K Consonants Ii

• 3307. Find The K Th Character In String Game Ii

• 3330. Find The Original Typed String I

• 3333. Find The Original Typed String Ii

• 3335. Total Characters In String After Transformations I

• 3337. Total Characters In String After Transformations Ii

• 3403. Find The Lexicographically Largest String From The Box I

• 3421. Find Students Who Improved

• 3443. Maximum Manhattan Distance After K Changes

• 3445. Maximum Difference Between Even And Odd Frequency Ii

• 3504. Longest Palindrome After Substring Concatenation Ii

• 3512. Minimum Operations To Make Array Sum Divisible By K

• 3550. Smallest Index With Digit Sum Equal To Index

• 3556. Sum Of Largest Prime Substrings

• 3557. Find Maximum Number Of Non Intersecting Substrings

• 3570. Find Books With No Available Copies

• 3582. Generate Tag For Video Caption

• 3597. Partition String

• 3598. Longest Common Prefix Between Adjacent Strings After Removals

• 3602. Hexadecimal And Hexatrigesimal Conversion

• 3675. Minimum Operations To Transform String

• 3697. Compute Decimal Representation

• 3703. Remove K Balanced Substrings

• 0020. Valid Parentheses

• 1317. Convert Integer To The Sum Of Two No Zero Integers

• 1323. Maximum 69 Number

• 1717. Maximum Score From Removing Substrings

• 1768. Merge Strings Alternately

• 2138. Divide A String Into Groups Of Size K

• 2264. Largest 3 Same Digit Number In String

• 2566. Maximum Difference By Remapping A Digit

• 2667. Create Hello World Function

• 2785. Sort Vowels In A String

• 2942. Find Words Containing Character

• 3136. Valid Word

• 3170. Lexicographically Minimum String After Removing Stars

• 3227. Vowels Game In A String

• 3304. Find The K Th Character In String Game I

• 3306. Count Of Substrings Containing Every Vowel And K Consonants Ii

• 3307. Find The K Th Character In String Game Ii

• 3330. Find The Original Typed String I

• 3333. Find The Original Typed String Ii

• 3335. Total Characters In String After Transformations I

• 3337. Total Characters In String After Transformations Ii

• 3403. Find The Lexicographically Largest String From The Box I

• 3421. Find Students Who Improved

• 3443. Maximum Manhattan Distance After K Changes

• 3445. Maximum Difference Between Even And Odd Frequency Ii

• 3504. Longest Palindrome After Substring Concatenation Ii

• 3512. Minimum Operations To Make Array Sum Divisible By K

• 3550. Smallest Index With Digit Sum Equal To Index

• 3556. Sum Of Largest Prime Substrings

• 3557. Find Maximum Number Of Non Intersecting Substrings

• 3570. Find Books With No Available Copies

• 3582. Generate Tag For Video Caption

• 3597. Partition String

• 3598. Longest Common Prefix Between Adjacent Strings After Removals

• 3602. Hexadecimal And Hexatrigesimal Conversion

• 3675. Minimum Operations To Transform String

• 3697. Compute Decimal Representation

• 3703. Remove K Balanced Substrings

• 0020. Valid Parentheses

• 1317. Convert Integer To The Sum Of Two No Zero Integers

• 1323. Maximum 69 Number

• 1717. Maximum Score From Removing Substrings

• 1768. Merge Strings Alternately

• 2138. Divide A String Into Groups Of Size K

• 2264. Largest 3 Same Digit Number In String

• 2566. Maximum Difference By Remapping A Digit

• 2667. Create Hello World Function

• 2785. Sort Vowels In A String

• 2942. Find Words Containing Character

• 3136. Valid Word

• 3170. Lexicographically Minimum String After Removing Stars

• 3227. Vowels Game In A String

• 3304. Find The K Th Character In String Game I

• 3306. Count Of Substrings Containing Every Vowel And K Consonants Ii

• 3307. Find The K Th Character In String Game Ii

• 3330. Find The Original Typed String I

• 3333. Find The Original Typed String Ii

• 3335. Total Characters In String After Transformations I

• 3337. Total Characters In String After Transformations Ii

• 3403. Find The Lexicographically Largest String From The Box I

• 3421. Find Students Who Improved

• 3443. Maximum Manhattan Distance After K Changes

• 3445. Maximum Difference Between Even And Odd Frequency Ii

• 3504. Longest Palindrome After Substring Concatenation Ii

• 3512. Minimum Operations To Make Array Sum Divisible By K

• 3550. Smallest Index With Digit Sum Equal To Index

• 3556. Sum Of Largest Prime Substrings

• 3557. Find Maximum Number Of Non Intersecting Substrings

• 3570. Find Books With No Available Copies

• 3582. Generate Tag For Video Caption

• 3597. Partition String

• 3598. Longest Common Prefix Between Adjacent Strings After Removals

• 3602. Hexadecimal And Hexatrigesimal Conversion

• 3675. Minimum Operations To Transform String

• 3697. Compute Decimal Representation

• 3703. Remove K Balanced Substrings

• 0020. Valid Parentheses

• 1317. Convert Integer To The Sum Of Two No Zero Integers

• 1323. Maximum 69 Number

• 1717. Maximum Score From Removing Substrings

• 1768. Merge Strings Alternately

• 2138. Divide A String Into Groups Of Size K

• 2264. Largest 3 Same Digit Number In String

• 2566. Maximum Difference By Remapping A Digit

• 2667. Create Hello World Function

• 2785. Sort Vowels In A String

• 2942. Find Words Containing Character

• 3136. Valid Word

• 3170. Lexicographically Minimum String After Removing Stars

• 3227. Vowels Game In A String

• 3304. Find The K Th Character In String Game I

• 3306. Count Of Substrings Containing Every Vowel And K Consonants Ii

• 3307. Find The K Th Character In String Game Ii

• 3330. Find The Original Typed String I

• 3333. Find The Original Typed String Ii

• 3335. Total Characters In String After Transformations I

• 3337. Total Characters In String After Transformations Ii

• 3403. Find The Lexicographically Largest String From The Box I

• 3421. Find Students Who Improved

• 3443. Maximum Manhattan Distance After K Changes

• 3445. Maximum Difference Between Even And Odd Frequency Ii

• 3504. Longest Palindrome After Substring Concatenation Ii

• 3512. Minimum Operations To Make Array Sum Divisible By K

• 3550. Smallest Index With Digit Sum Equal To Index

• 3556. Sum Of Largest Prime Substrings

• 3557. Find Maximum Number Of Non Intersecting Substrings

• 3570. Find Books With No Available Copies

• 3582. Generate Tag For Video Caption

• 3597. Partition String

• 3598. Longest Common Prefix Between Adjacent Strings After Removals

• 3602. Hexadecimal And Hexatrigesimal Conversion

• 3675. Minimum Operations To Transform String

• 3697. Compute Decimal Representation

• 3703. Remove K Balanced Substrings

Strings & Palindromes

• 0767. Reorganize String

• 3503. Longest Palindrome After Substring Concatenation I

• 0009. Palindrome Number

• 0020. Valid Parentheses

• 0165. Compare Version Numbers

• 1935. Maximum Number Of Words You Can Type

• 2014. Longest Subsequence Repeated k Times

• 2264. Largest 3 Same Digit Number In String

• 3136. Valid Word

• 3304. Find the K-th Character in String Game I

• 3307. Find the K-th Character in String Game II

• 3504. Longest Palindrome After Substring Concatenation II

• 3598. Longest Common Prefix Between Adjacent Strings After Removals

• 3606. Coupon Code Validator

• 3664. Two Letter Card Game

• 0009. Palindrome Number

• 2081. Sum Of K Mirror Numbers

• 3440. Reschedule Meetings For Maximum Free Time Ii

• 3503. Longest Palindrome After Substring Concatenation I

• 3517. Smallest Palindromic Rearrangement I

• 0009. Palindrome Number

• 2081. Sum Of K Mirror Numbers

• 3440. Reschedule Meetings For Maximum Free Time Ii

• 3503. Longest Palindrome After Substring Concatenation I

• 3517. Smallest Palindromic Rearrangement I

• 0009. Palindrome Number

• 2081. Sum Of K Mirror Numbers

• 3440. Reschedule Meetings For Maximum Free Time Ii

• 3503. Longest Palindrome After Substring Concatenation I

• 3517. Smallest Palindromic Rearrangement I

• 0009. Palindrome Number

• 2081. Sum Of K Mirror Numbers

• 3440. Reschedule Meetings For Maximum Free Time Ii

• 3503. Longest Palindrome After Substring Concatenation I

• 3517. Smallest Palindromic Rearrangement I

• 0009. Palindrome Number

• 2081. Sum Of K Mirror Numbers

• 3440. Reschedule Meetings For Maximum Free Time Ii

• 3503. Longest Palindrome After Substring Concatenation I

• 3517. Smallest Palindromic Rearrangement I

🌳 Trees & Graphs

Tree & Graph Problems

• 0124. Binary Tree Maximum Path Sum

• 0199. Binary Tree Right Side View

• 0200. Number of Islands

• 0543. Diameter of Binary Tree

• 0909. Snakes and Ladders

• 1353. Maximum Number of Events That Can Be Attended

• 2561. Rearranging Fruits

• 3068. Find the Maximum Sum of Node Values

• 3372. Maximize the Number of Target Nodes After Connecting Trees I

• 3426. Manhattan Distances of All Arrangements of Pieces

• 3515. Shortest Path in a Weighted Tree

• 3532. Path Existence Queries in a Graph I

• 3585. Find Weighted Median Node in Tree

• 3590. Kth Smallest Path XOR Sum

• 3593. Minimum Increments to Equalize Leaf Paths

• 3599. Partition Array to Minimize XOR

• 3600. Maximize Spanning Tree Stability with Upgrades

• 3603. Minimum Cost Path with Alternating Directions II

• 3607. Power Grid Maintenance

• 3608. Minimum Time for K Connected Components

• 0386. Lexicographical Numbers

• 3543. Maximum Weighted K Edge Path

• 3544. Subtree Inversion Sum

• 1857. Largest Color Value In A Directed Graph

• 2322. Minimum Score After Removals on a Tree

• 2359. Find Closest Node to Given Two Nodes

• 3341. Find Minimum Time to Reach Last Room I

• 3342. Find Minimum Time to Reach Last Room II

• 3373. Maximize the Number of Target Nodes After Connecting Trees II

• 3425. Longest Special Path

• 3530. Maximum Profit from Valid Topological Order in DAG

• 3534. Path Existence Queries in a Graph II

• 3538. Merge Operations for Minimum Travel Time

• 3558. Number of Ways to Assign Edge Weights I

• 3594. Minimum Time to Transport All Individuals

• 3604. Minimum Time to Reach Destination in Directed Graph

• 0124. Binary Tree Maximum Path Sum

• 0199. Binary Tree Right Side View

• 0386. Lexicographical Numbers

• 0543. Diameter Of Binary Tree

• 1857. Largest Color Value In A Directed Graph

• 2322. Minimum Score After Removals On A Tree

• 2359. Find Closest Node To Given Two Nodes

• 3372. Maximize The Number Of Target Nodes After Connecting Trees I

• 3373. Maximize The Number Of Target Nodes After Connecting Trees Ii

• 3425. Longest Special Path

• 3515. Shortest Path In A Weighted Tree

• 3516. Find Closest Person

• 3532. Path Existence Queries In A Graph I

• 3533. Concatenated Divisibility

• 3543. Maximum Weighted K Edge Path

• 3544. Subtree Inversion Sum

• 3558. Number Of Ways To Assign Edge Weights I

• 3585. Find Weighted Median Node In Tree

• 3593. Minimum Increments To Equalize Leaf Paths

• 3600. Maximize Spanning Tree Stability With Upgrades

• 0124. Binary Tree Maximum Path Sum

• 0199. Binary Tree Right Side View

• 0386. Lexicographical Numbers

• 0543. Diameter Of Binary Tree

• 1857. Largest Color Value In A Directed Graph

• 2322. Minimum Score After Removals On A Tree

• 2359. Find Closest Node To Given Two Nodes

• 3372. Maximize The Number Of Target Nodes After Connecting Trees I

• 3373. Maximize The Number Of Target Nodes After Connecting Trees Ii

• 3425. Longest Special Path

• 3515. Shortest Path In A Weighted Tree

• 3516. Find Closest Person

• 3532. Path Existence Queries In A Graph I

• 3533. Concatenated Divisibility

• 3543. Maximum Weighted K Edge Path

• 3544. Subtree Inversion Sum

• 3558. Number Of Ways To Assign Edge Weights I

• 3585. Find Weighted Median Node In Tree

• 3593. Minimum Increments To Equalize Leaf Paths

• 3600. Maximize Spanning Tree Stability With Upgrades

• 0124. Binary Tree Maximum Path Sum

• 0199. Binary Tree Right Side View

• 0386. Lexicographical Numbers

• 0543. Diameter Of Binary Tree

• 1857. Largest Color Value In A Directed Graph

• 2322. Minimum Score After Removals On A Tree

• 2359. Find Closest Node To Given Two Nodes

• 3372. Maximize The Number Of Target Nodes After Connecting Trees I

• 3373. Maximize The Number Of Target Nodes After Connecting Trees Ii

• 3425. Longest Special Path

• 3515. Shortest Path In A Weighted Tree

• 3516. Find Closest Person

• 3532. Path Existence Queries In A Graph I

• 3533. Concatenated Divisibility

• 3543. Maximum Weighted K Edge Path

• 3544. Subtree Inversion Sum

• 3558. Number Of Ways To Assign Edge Weights I

• 3585. Find Weighted Median Node In Tree

• 3593. Minimum Increments To Equalize Leaf Paths

• 3600. Maximize Spanning Tree Stability With Upgrades

• 0124. Binary Tree Maximum Path Sum

• 0199. Binary Tree Right Side View

• 0386. Lexicographical Numbers

• 0543. Diameter Of Binary Tree

• 1857. Largest Color Value In A Directed Graph

• 2322. Minimum Score After Removals On A Tree

• 2359. Find Closest Node To Given Two Nodes

• 3372. Maximize The Number Of Target Nodes After Connecting Trees I

• 3373. Maximize The Number Of Target Nodes After Connecting Trees Ii

• 3425. Longest Special Path

• 3515. Shortest Path In A Weighted Tree

• 3516. Find Closest Person

• 3532. Path Existence Queries In A Graph I

• 3533. Concatenated Divisibility

• 3543. Maximum Weighted K Edge Path

• 3544. Subtree Inversion Sum

• 3558. Number Of Ways To Assign Edge Weights I

• 3585. Find Weighted Median Node In Tree

• 3593. Minimum Increments To Equalize Leaf Paths

• 3600. Maximize Spanning Tree Stability With Upgrades

• 0124. Binary Tree Maximum Path Sum

• 0199. Binary Tree Right Side View

• 0386. Lexicographical Numbers

• 0543. Diameter Of Binary Tree

• 1857. Largest Color Value In A Directed Graph

• 2322. Minimum Score After Removals On A Tree

• 2359. Find Closest Node To Given Two Nodes

• 3372. Maximize The Number Of Target Nodes After Connecting Trees I

• 3373. Maximize The Number Of Target Nodes After Connecting Trees Ii

• 3425. Longest Special Path

• 3515. Shortest Path In A Weighted Tree

• 3516. Find Closest Person

• 3532. Path Existence Queries In A Graph I

• 3533. Concatenated Divisibility

• 3543. Maximum Weighted K Edge Path

• 3544. Subtree Inversion Sum

• 3558. Number Of Ways To Assign Edge Weights I

• 3585. Find Weighted Median Node In Tree

• 3593. Minimum Increments To Equalize Leaf Paths

• 3600. Maximize Spanning Tree Stability With Upgrades

🔍 Hash Tables & Dictionaries

• 0146. LRU Cache

• 1366. Rank Teams by Votes

• 2115. Find All Possible Recipes from Given Supplies

• 3477. Fruits into Baskets II

• 0966. Vowel Spellchecker

• 0166. Fraction To Recurring Decimal

• 1394. Find Lucky Integer in an Array

• 3442. Maximum Difference Between Even and Odd Frequency I

• 3445. Maximum Difference Between Even and Odd Frequency II

• 0966. Vowel Spellchecker

• 0966. Vowel Spellchecker

• 0966. Vowel Spellchecker

• 0966. Vowel Spellchecker

• 0966. Vowel Spellchecker

🔢 Math & Bit Manipulation

Bit Manipulation

• 0231. Power Of Two

• 0342. Power Of Four

• 0869. Reordered Power Of 2

• 2311. Longest Binary Subsequence Less Than Or Equal To K

• 2411. Smallest Subarrays With Maximum Bitwise Or

• 2425. Bitwise Xor Of All Pairings

• 3513. Number of Unique XOR Triplets I

• 3514. Number of Unique XOR Triplets II

• 3590. Kth Smallest Path Xor Sum

• 3599. Partition Array To Minimize Xor

• 3688. Bitwise Or Of Even Numbers In An Array

• 3702. Longest Subsequence With Non Zero Bitwise Xor

• 0231. Power Of Two

• 0342. Power Of Four

• 1935. Maximum Number Of Words You Can Type

• 2311. Longest Binary Subsequence Less Than Or Equal To K

• 2411. Smallest Subarrays With Maximum Bitwise Or

• 2425. Bitwise Xor Of All Pairings

• 2918. Minimum Equal Sum Of Two Arrays After Replacing Zeros

• 3513. Number Of Unique Xor Triplets I

• 3530. Maximum Profit From Valid Topological Order In Dag

• 3566. Partition Array Into Two Equal Product Subsets

• 3568. Minimum Moves To Clean The Classroom

• 3594. Minimum Time To Transport All Individuals

• 3604. Minimum Time To Reach Destination In Directed Graph

• 3605. Minimum Stability Factor Of Array

• 3688. Bitwise Or Of Even Numbers In An Array

• 3702. Longest Subsequence With Non Zero Bitwise Xor

• 0231. Power Of Two

• 0342. Power Of Four

• 1935. Maximum Number Of Words You Can Type

• 2311. Longest Binary Subsequence Less Than Or Equal To K

• 2411. Smallest Subarrays With Maximum Bitwise Or

• 2425. Bitwise Xor Of All Pairings

• 2918. Minimum Equal Sum Of Two Arrays After Replacing Zeros

• 3513. Number Of Unique Xor Triplets I

• 3530. Maximum Profit From Valid Topological Order In Dag

• 3566. Partition Array Into Two Equal Product Subsets

• 3568. Minimum Moves To Clean The Classroom

• 3594. Minimum Time To Transport All Individuals

• 3604. Minimum Time To Reach Destination In Directed Graph

• 3605. Minimum Stability Factor Of Array

• 3688. Bitwise Or Of Even Numbers In An Array

• 3702. Longest Subsequence With Non Zero Bitwise Xor

• 0231. Power Of Two

• 0342. Power Of Four

• 1935. Maximum Number Of Words You Can Type

• 2311. Longest Binary Subsequence Less Than Or Equal To K

• 2411. Smallest Subarrays With Maximum Bitwise Or

• 2425. Bitwise Xor Of All Pairings

• 2918. Minimum Equal Sum Of Two Arrays After Replacing Zeros

• 3513. Number Of Unique Xor Triplets I

• 3530. Maximum Profit From Valid Topological Order In Dag

• 3566. Partition Array Into Two Equal Product Subsets

• 3568. Minimum Moves To Clean The Classroom

• 3594. Minimum Time To Transport All Individuals

• 3604. Minimum Time To Reach Destination In Directed Graph

• 3605. Minimum Stability Factor Of Array

• 3688. Bitwise Or Of Even Numbers In An Array

• 3702. Longest Subsequence With Non Zero Bitwise Xor

• 0231. Power Of Two

• 0342. Power Of Four

• 1935. Maximum Number Of Words You Can Type

• 2311. Longest Binary Subsequence Less Than Or Equal To K

• 2411. Smallest Subarrays With Maximum Bitwise Or

• 2425. Bitwise Xor Of All Pairings

• 2918. Minimum Equal Sum Of Two Arrays After Replacing Zeros

• 3513. Number Of Unique Xor Triplets I

• 3530. Maximum Profit From Valid Topological Order In Dag

• 3566. Partition Array Into Two Equal Product Subsets

• 3568. Minimum Moves To Clean The Classroom

• 3594. Minimum Time To Transport All Individuals

• 3604. Minimum Time To Reach Destination In Directed Graph

• 3605. Minimum Stability Factor Of Array

• 3688. Bitwise Or Of Even Numbers In An Array

• 3702. Longest Subsequence With Non Zero Bitwise Xor

• 0231. Power Of Two

• 0342. Power Of Four

• 1935. Maximum Number Of Words You Can Type

• 2311. Longest Binary Subsequence Less Than Or Equal To K

• 2411. Smallest Subarrays With Maximum Bitwise Or

• 2425. Bitwise Xor Of All Pairings

• 2918. Minimum Equal Sum Of Two Arrays After Replacing Zeros

• 3513. Number Of Unique Xor Triplets I

• 3530. Maximum Profit From Valid Topological Order In Dag

• 3566. Partition Array Into Two Equal Product Subsets

• 3568. Minimum Moves To Clean The Classroom

• 3594. Minimum Time To Transport All Individuals

• 3604. Minimum Time To Reach Destination In Directed Graph

• 3605. Minimum Stability Factor Of Array

• 3688. Bitwise Or Of Even Numbers In An Array

• 3702. Longest Subsequence With Non Zero Bitwise Xor

Pure Math

• 0002. Add Two Numbers
• 0118. Pascals Triangle
• 0120. Triangle
• 0812. Largest Triangle Area
• 0909. Snakes And Ladders
• 1304. Find N Unique Integers Sum Up To Zero
• 1317. Convert Integer To The Sum Of Two No Zero Integers
• 2081. Sum Of K Mirror Numbers
• 2163. Minimum Difference In Sums After Removal Of Elements
• 2197. Replace Non Coprime Numbers In Array
• 2221. Find Triangular Sum Of An Array
• 2235. Add Two Integers
• 2787. Ways To Express An Integer As Sum Of Powers
• 2918. Minimum Equal Sum Of Two Arrays After Replacing Zeros
• 3068. Find The Maximum Sum Of Node Values
• 3487. Maximum Unique Subarray Sum After Deletion
• 3509. Maximum Product of Subsequences with an Alternating Sum Equal to K
• 3512. Minimum Operations To Make Array Sum Divisible By K
• 3533. Concatenated Divisibility
• 3539. Find Sum Of Array Product Of Magical Sequences
• 3556. Sum Of Largest Prime Substrings
• 3572. Maximize Ysum By Picking A Triplet Of Distinct Xvalues
• 3574. Maximize Subarray Gcd Score
• 3588. Find Maximum Area Of A Triangle
• 3589. Count Prime Gap Balanced Subarrays
• 3602. Hexadecimal And Hexatrigesimal Conversion
• 3701. Compute Alternating Sum
• 0118. Pascals Triangle
• 0812. Largest Triangle Area
• 2197. Replace Non Coprime Numbers In Array
• 3411. Maximum Subarray With Equal Products
• 3574. Maximize Subarray Gcd Score
• 3591. Check If Any Element Has Prime Frequency
• 0118. Pascals Triangle
• 0812. Largest Triangle Area
• 2197. Replace Non Coprime Numbers In Array
• 3411. Maximum Subarray With Equal Products
• 3574. Maximize Subarray Gcd Score
• 3591. Check If Any Element Has Prime Frequency
• 0118. Pascals Triangle
• 0812. Largest Triangle Area
• 2197. Replace Non Coprime Numbers In Array
• 3411. Maximum Subarray With Equal Products
• 3574. Maximize Subarray Gcd Score
• 3591. Check If Any Element Has Prime Frequency
• 0118. Pascals Triangle
• 0812. Largest Triangle Area
• 2197. Replace Non Coprime Numbers In Array
• 3411. Maximum Subarray With Equal Products
• 3574. Maximize Subarray Gcd Score
• 3591. Check If Any Element Has Prime Frequency
• 0118. Pascals Triangle
• 0812. Largest Triangle Area
• 2197. Replace Non Coprime Numbers In Array
• 3411. Maximum Subarray With Equal Products
• 3574. Maximize Subarray Gcd Score
• 3591. Check If Any Element Has Prime Frequency

💾 System Design

• 3508. Implement Router

• 0146. Lru Cache

• 1290. Convert Binary Number In A Linked List To Integer

• 1865. Finding Pairs With A Certain Sum

• 2353. Design A Food Rating System

• 3408. Design Task Manager

• 3484. Design Spreadsheet

• 1912. Design Movie Rental System

• 0002. Add Two Numbers

• 0146. Lru Cache

• 1290. Convert Binary Number In A Linked List To Integer

• 1792. Maximum Average Pass Ratio

• 1865. Finding Pairs With A Certain Sum

• 1912. Design Movie Rental System

• 2353. Design A Food Rating System

• 3408. Design Task Manager

• 3484. Design Spreadsheet

• 0002. Add Two Numbers

• 0146. Lru Cache

• 1290. Convert Binary Number In A Linked List To Integer

• 1792. Maximum Average Pass Ratio

• 1865. Finding Pairs With A Certain Sum

• 1912. Design Movie Rental System

• 2353. Design A Food Rating System

• 3408. Design Task Manager

• 3484. Design Spreadsheet

• 0002. Add Two Numbers

• 0146. Lru Cache

• 1290. Convert Binary Number In A Linked List To Integer

• 1792. Maximum Average Pass Ratio

• 1865. Finding Pairs With A Certain Sum

• 1912. Design Movie Rental System

• 2353. Design A Food Rating System

• 3408. Design Task Manager

• 3484. Design Spreadsheet

• 0002. Add Two Numbers

• 0146. Lru Cache

• 1290. Convert Binary Number In A Linked List To Integer

• 1792. Maximum Average Pass Ratio

• 1865. Finding Pairs With A Certain Sum

• 1912. Design Movie Rental System

• 2353. Design A Food Rating System

• 3408. Design Task Manager

• 3484. Design Spreadsheet

• 0002. Add Two Numbers

• 0146. Lru Cache

• 1290. Convert Binary Number In A Linked List To Integer

• 1792. Maximum Average Pass Ratio

• 1865. Finding Pairs With A Certain Sum

• 1912. Design Movie Rental System

• 2353. Design A Food Rating System

• 3408. Design Task Manager

• 3484. Design Spreadsheet

📊 SQL

• 1061. Lexicographically Smallest Equivalent String

• 1249. Minimum Remove To Make Valid Parentheses

• 1366. Rank Teams By Votes

• 1432. Max Difference You Can Get From Changing An Integer

• 1948. Delete Duplicate Folders In System

• 2094. Finding 3 Digit Even Numbers

• 2434. Using A Robot To Print The Lexicographically Smallest String

• 2894. Divisible And Non Divisible Sums Difference

• 3528. Unit Conversion I

• 3607. Power Grid Maintenance

• 3570. Find Books with No Available Copies

• 0679. 24 Game

• 0909. Snakes And Ladders

• 1039. Minimum Score Triangulation Of Polygon

• 1061. Lexicographically Smallest Equivalent String

• 1249. Minimum Remove To Make Valid Parentheses

• 1298. Maximum Candies You Can Get From Boxes

• 1366. Rank Teams By Votes

• 1432. Max Difference You Can Get From Changing An Integer

• 1518. Water Bottles

• 1900. The Earliest And Latest Rounds Where Players Compete

• 1920. Build Array From Permutation

• 1948. Delete Duplicate Folders In System

• 2094. Finding 3 Digit Even Numbers

• 2200. Find All K Distant Indices In An Array

• 2221. Find Triangular Sum Of An Array

• 2294. Partition Array Such That Maximum Difference Is K

• 2434. Using A Robot To Print The Lexicographically Smallest String

• 2894. Divisible And Non Divisible Sums Difference

• 2900. Longest Unequal Adjacent Groups Subsequence I

• 2901. Longest Unequal Adjacent Groups Subsequence Ii

• 3068. Find The Maximum Sum Of Node Values

• 3355. Zero Array Transformation I

• 3480. Maximize Subarrays After Removing One Conflicting Pair

• 3487. Maximum Unique Subarray Sum After Deletion

• 3495. Minimum Operations To Make Array Elements Zero

• 3502. Minimum Cost To Reach Every Position

• 3528. Unit Conversion I

• 3584. Maximum Product Of First And Last Elements Of A Subsequence

• 3607. Power Grid Maintenance

• 3609. Minimum Moves To Reach Target In Grid

• 3652. Best Time To Buy And Sell Stock Using Strategy

• 3693. Climbing Stairs Ii

• 0679. 24 Game

• 0909. Snakes And Ladders

• 1039. Minimum Score Triangulation Of Polygon

• 1061. Lexicographically Smallest Equivalent String

• 1249. Minimum Remove To Make Valid Parentheses

• 1298. Maximum Candies You Can Get From Boxes

• 1366. Rank Teams By Votes

• 1432. Max Difference You Can Get From Changing An Integer

• 1518. Water Bottles

• 1900. The Earliest And Latest Rounds Where Players Compete

• 1920. Build Array From Permutation

• 1948. Delete Duplicate Folders In System

• 2094. Finding 3 Digit Even Numbers

• 2200. Find All K Distant Indices In An Array

• 2221. Find Triangular Sum Of An Array

• 2294. Partition Array Such That Maximum Difference Is K

• 2434. Using A Robot To Print The Lexicographically Smallest String

• 2894. Divisible And Non Divisible Sums Difference

• 2900. Longest Unequal Adjacent Groups Subsequence I

• 2901. Longest Unequal Adjacent Groups Subsequence Ii

• 3068. Find The Maximum Sum Of Node Values

• 3355. Zero Array Transformation I

• 3480. Maximize Subarrays After Removing One Conflicting Pair

• 3487. Maximum Unique Subarray Sum After Deletion

• 3495. Minimum Operations To Make Array Elements Zero

• 3502. Minimum Cost To Reach Every Position

• 3528. Unit Conversion I

• 3584. Maximum Product Of First And Last Elements Of A Subsequence

• 3607. Power Grid Maintenance

• 3609. Minimum Moves To Reach Target In Grid

• 3652. Best Time To Buy And Sell Stock Using Strategy

• 3693. Climbing Stairs Ii

• 0679. 24 Game

• 0909. Snakes And Ladders

• 1039. Minimum Score Triangulation Of Polygon

• 1061. Lexicographically Smallest Equivalent String

• 1249. Minimum Remove To Make Valid Parentheses

• 1298. Maximum Candies You Can Get From Boxes

• 1366. Rank Teams By Votes

• 1432. Max Difference You Can Get From Changing An Integer

• 1518. Water Bottles

• 1900. The Earliest And Latest Rounds Where Players Compete

• 1920. Build Array From Permutation

• 1948. Delete Duplicate Folders In System

• 2094. Finding 3 Digit Even Numbers

• 2200. Find All K Distant Indices In An Array

• 2221. Find Triangular Sum Of An Array

• 2294. Partition Array Such That Maximum Difference Is K

• 2434. Using A Robot To Print The Lexicographically Smallest String

• 2894. Divisible And Non Divisible Sums Difference

• 2900. Longest Unequal Adjacent Groups Subsequence I

• 2901. Longest Unequal Adjacent Groups Subsequence Ii

• 3068. Find The Maximum Sum Of Node Values

• 3355. Zero Array Transformation I

• 3480. Maximize Subarrays After Removing One Conflicting Pair

• 3487. Maximum Unique Subarray Sum After Deletion

• 3494. Find The Minimum Amount Of Time To Brew Potions

• 3495. Minimum Operations To Make Array Elements Zero

• 3502. Minimum Cost To Reach Every Position

• 3528. Unit Conversion I

• 3584. Maximum Product Of First And Last Elements Of A Subsequence

• 3607. Power Grid Maintenance

• 3609. Minimum Moves To Reach Target In Grid

• 3652. Best Time To Buy And Sell Stock Using Strategy

• 3693. Climbing Stairs Ii

• 0679. 24 Game

• 0909. Snakes And Ladders

• 1039. Minimum Score Triangulation Of Polygon

• 1061. Lexicographically Smallest Equivalent String

• 1249. Minimum Remove To Make Valid Parentheses

• 1298. Maximum Candies You Can Get From Boxes

• 1366. Rank Teams By Votes

• 1432. Max Difference You Can Get From Changing An Integer

• 1518. Water Bottles

• 1900. The Earliest And Latest Rounds Where Players Compete

• 1920. Build Array From Permutation

• 1948. Delete Duplicate Folders In System

• 2094. Finding 3 Digit Even Numbers

• 2200. Find All K Distant Indices In An Array

• 2221. Find Triangular Sum Of An Array

• 2294. Partition Array Such That Maximum Difference Is K

• 2434. Using A Robot To Print The Lexicographically Smallest String

• 2894. Divisible And Non Divisible Sums Difference

• 2900. Longest Unequal Adjacent Groups Subsequence I

• 2901. Longest Unequal Adjacent Groups Subsequence Ii

• 3068. Find The Maximum Sum Of Node Values

• 3147. Taking Maximum Energy From The Mystic Dungeon

• 3355. Zero Array Transformation I

• 3480. Maximize Subarrays After Removing One Conflicting Pair

• 3487. Maximum Unique Subarray Sum After Deletion

• 3495. Minimum Operations To Make Array Elements Zero

• 3502. Minimum Cost To Reach Every Position

• 3528. Unit Conversion I

• 3584. Maximum Product Of First And Last Elements Of A Subsequence

• 3607. Power Grid Maintenance

• 3609. Minimum Moves To Reach Target In Grid

• 3652. Best Time To Buy And Sell Stock Using Strategy

• 3693. Climbing Stairs Ii

• 0679. 24 Game

• 0909. Snakes And Ladders

• 1039. Minimum Score Triangulation Of Polygon

• 1061. Lexicographically Smallest Equivalent String

• 1249. Minimum Remove To Make Valid Parentheses

• 1298. Maximum Candies You Can Get From Boxes

• 1366. Rank Teams By Votes

• 1432. Max Difference You Can Get From Changing An Integer

• 1518. Water Bottles

• 1900. The Earliest And Latest Rounds Where Players Compete

• 1920. Build Array From Permutation

• 1948. Delete Duplicate Folders In System

• 2094. Finding 3 Digit Even Numbers

• 2200. Find All K Distant Indices In An Array

• 2221. Find Triangular Sum Of An Array

• 2273. Find Resultant Array After Removing Anagrams

• 2294. Partition Array Such That Maximum Difference Is K

• 2434. Using A Robot To Print The Lexicographically Smallest String

• 2894. Divisible And Non Divisible Sums Difference

• 2900. Longest Unequal Adjacent Groups Subsequence I

• 2901. Longest Unequal Adjacent Groups Subsequence Ii

• 3068. Find The Maximum Sum Of Node Values

• 3147. Taking Maximum Energy From The Mystic Dungeon

• 3355. Zero Array Transformation I

• 3480. Maximize Subarrays After Removing One Conflicting Pair

• 3487. Maximum Unique Subarray Sum After Deletion

• 3495. Minimum Operations To Make Array Elements Zero

• 3502. Minimum Cost To Reach Every Position

• 3528. Unit Conversion I

• 3584. Maximum Product Of First And Last Elements Of A Subsequence

• 3607. Power Grid Maintenance

• 3609. Minimum Moves To Reach Target In Grid

• 3652. Best Time To Buy And Sell Stock Using Strategy

• 3693. Climbing Stairs Ii

🤝 Contributing

While this is primarily my personal collection of solutions, I welcome any suggestions or improvements. Feel free to:

• Report bugs or issues
• Suggest optimizations
• Share alternative solutions

📄 License

This project is licensed under the MIT License - see the LICENSE file for details.

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