Files

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solution
- 0001.Two Sum
- 0002.Add Two Numbers
- 0003.Longest Substring Without Repeating Characters
- 0004.Median of Two Sorted Arrays
- 0005.Longest Palindromic Substring
- 0006.ZigZag Conversion
- 0007.Reverse Integer
- 0008.String to Integer (atoi)
- 0009.Palindrome Number
- 0010.Regular Expression Matching
- 0011.Container With Most Water
- 0012.Integer to Roman
- 0013.Roman to Integer
- 0014.Longest Common Prefix
- 0015.3Sum
- 0016.3Sum Closest
- 0017.Letter Combinations of a Phone Number
- 0018.4Sum
- 0019.Remove Nth Node From End of List
- 0020.Valid Parentheses
- 0021.Merge Two Sorted Lists
- 0022.Generate Parentheses
- 0023.Merge k Sorted Lists
- 0024.Swap Nodes in Pairs
- 0025.Reverse Nodes in k-Group
- 0026.Remove Duplicates from Sorted Array
- 0027.Remove Element
- 0028.Implement strStr()
- 0029.Divide Two Integers
- 0030.Substring with Concatenation of All Words
- 0031.Next Permutation
- 0032.Longest Valid Parentheses
- 0033.Search in Rotated Sorted Array
- 0034.Find First and Last Position of Element in Sorted Array
- 0035.Search Insert Position
- 0036.Valid Sudoku
- 0037.Sudoku Solver
- 0038.Count and Say
- 0039.Combination Sum
- 0040.Combination Sum II
- 0041.First Missing Positive
- 0042.Trapping Rain Water
- 0043.Multiply Strings
- 0044.Wildcard Matching
- 0045.Jump Game II
- 0046.Permutations
- 0047.Permutations II
- 0048.Rotate Image
- 0049.Group Anagrams
- 0050.Pow(x, n)
- 0051.N-Queens
- 0052.N-Queens II
- 0053.Maximum Subarray
- 0054.Spiral Matrix
- 0055.Jump Game
- 0056.Merge Intervals
- 0057.Insert Interval
- 0058.Length of Last Word
- 0059.Spiral Matrix II
- 0060.Permutation Sequence
- 0061.Rotate List
- 0062.Unique Paths
- 0063.Unique Paths II
- 0064.Minimum Path Sum
- 0065.Valid
  - Solution.cs
  - Solution.java
  - Solution.py
- 0066.Plus One
- 0067.Add Binary
- 0068.Text Justification
- 0069.Sqrt(x)
- 0070.Climbing Stairs
- 0071.Simplify Path
- 0072.Edit Distance
- 0073.Set Matrix Zeroes
- 0074.Search a 2D Matrix
- 0075.Sort Colors
- 0076.Minimum Window Substring
- 0077.Combinations
- 0078.Subsets
- 0079.Word Search
- 0080.Remove Duplicates from Sorted Array II
- 0081.Search in Rotated Sorted Array II
- 0082.Remove Duplicates from Sorted List II
- 0083.Remove Duplicates from Sorted List
- 0084.Largest Rectangle in Histogram
- 0085.Maximal Rectangle
- 0086.Partition List
- 0087.Scramble String
- 0088.Merge Sorted Array
- 0089.Gray Code
- 0090.Subsets II
- 0091.Decode Ways
- 0092.Reverse Linked List II
- 0093.Restore IP Addresses
- 0094.Binary Tree Inorder Traversal
- 0095.Unique Binary Search Trees II
- 0096.Unique Binary Search Trees
- 0097.Interleaving String
- 0098.Validate Binary Search Tree
- 0099.Recover Binary Search Tree
- 0100.Same Tree
- 0101.Symmetric Tree
- 0102.Binary Tree Level Order Traversal
- 0103.Binary Tree Zigzag Level Order Traversal
- 0104.Maximum Depth of Binary Tree
- 0105.Construct Binary Tree from Preorder and Inorder Traversal
- 0106.Construct Binary Tree from Inorder and Postorder Traversal
- 0107.Binary Tree Level Order Traversal II
- 0108.Convert Sorted Array to Binary Search Tree
- 0109.Convert Sorted List to Binary Search Tree
- 0110.Balanced Binary Tree
- 0111.Minimum Depth of Binary Tree
- 0112.Path Sum
- 0113.Path Sum II
- 0114.Flatten Binary Tree to Linked List
- 0115.Distinct Subsequences
- 0116.Populating Next Right Pointers in Each Node
- 0117.Populating Next Right Pointers in Each Node II
- 0118.Pascal's Triangle
- 0119.Pascal's Triangle II
- 0120.Triangle
- 0121.Best Time to Buy and Sell Stock
- 0122.Best Time to Buy and Sell Stock II
- 0123.Best Time to Buy and Sell Stock III
- 0124.Binary Tree Maximum Path Sum
- 0125.Valid Palindrome
- 0126.Word Ladder II
- 0127.Word Ladder
- 0128.Longest Consecutive Sequence
- 0129.Sum Root to Leaf Numbers
- 0130.Surrounded Regions
- 0131.Palindrome Partitioning
- 0132.Palindrome Partitioning II
- 0133.Clone Graph
- 0134.Gas Station
- 0135.Candy
- 0136.Single Number
- 0137.Single Number II
- 0138.Copy List with Random Pointer
- 0139.Word Break
- 0140.Word Break II
- 0141.Linked List Cycle
- 0142.Linked List Cycle II
- 0143.Reorder List
- 0144.Binary Tree Preorder Traversal
- 0145.Binary Tree Postorder Traversal
- 0146.Lru Cache
- 0147.Insertion Sort List
- 0148.Sort List
- 0149.Max Points on a Line
- 0150.Evaluate Reverse Polish Notation
- 0151.Reverse Words in a String
- 0152.Maximum Product Subarray
- 0153.Find Minimum in Rotated Sorted Array
- 0154.Find Minimum in Rotated Sorted Array II
- 0155.Min Stack
- 0160.Intersection of Two Linked Lists
- 0162.Find Peak Element
- 0164.Maximum Gap
- 0165.Compare Version Numbers
- 0166.Fraction to Recurring Decimal
- 0167.Two Sum II - Input array is sorted
- 0168.Excel Sheet Column Title
- 0169.Majority Element
- 0171.Excel Sheet Column Number
- 0172.Factorial Trailing Zeroes
- 0174.Dungeon Game
- 0175.Combine Two Tables
- 0176.Second Highest Salary
- 0177.Nth Highest Salary
- 0178.Rank Scores
- 0179.Largest Number
- 0180.Consecutive Numbers
- 0181.Employees Earning More Than Their Managers
- 0182.Duplicate Emails
- 0183.Customers Who Never Order
- 0184.Department Highest Salary
- 0187.Repeated DNA Sequences
- 0188.Best Time to Buy and Sell Stock IV
- 0189.Rotate Array
- 0190.Reverse Bits
- 0191.Number of 1 Bits
- 0192.Word Frequency
- 0193.Valid Phone Numbers
- 0194.Transpose File
- 0195.Tenth Line
- 0196.Delete Duplicate Emails
- 0197.Rising Temperature
- 0198.House Robber
- 0200.Number of Islands
- 0201.Bitwise AND of Numbers Range
- 0202.Happy Number
- 0203.Remove Linked List Elements
- 0204.Count Primes
- 0205.Isomorphic Strings
- 0206.Reverse Linked List
- 0207.Course Schedule
- 0208. Implement Trie (Prefix Tree)
- 0209.Minimum Size Subarray Sum
- 0210.Course Schedule II
- 0211.Add and Search Word - Data structure design
- 0212.Word Search II
- 0213.House Robber II
- 0214.Shortest Palindrome
- 0215.Kth Largest Element in an Array
- 0216.Combination Sum III
- 0217.Contains Duplicate
- 0218.The Skyline Problem
- 0219.Contains Duplicate II
- 0220.Contains Duplicate III
- 0221.Maximal Square
- 0222.Count Complete Tree Nodes
- 0223.Rectangle Area
- 0224.Basic Calculator
- 0226.Invert Binary Tree
- 0227.Basic Calculator II
- 0228.Summary Ranges
- 0229.Majority Element II
- 0230.Kth Smallest Element in a BST
- 0231.Power of Two
- 0233.Number of Digit One
- 0234.Palindrome Linked List
- 0235.Lowest Common Ancestor of a Binary Search Tree
- 0237.Delete Node in a Linked List
- 0238.Product of Array Except Self
- 0239.Sliding Window Maximum
- 0240.Search a 2D Matrix II
- 0241.Different Ways to Add Parentheses
- 0242.Valid Anagram
- 0257.Binary Tree Paths
- 0260.Single Number III
- 0263.Ugly Number
- 0264.Ugly Number II
- 0268.Missing Number
- 0273.Integer to English Words
- 0274.H-Index
- 0275.H-Index II
- 0278.First Bad Version
- 0279.Perfect Squares
- 0282.Expression Add Operators
- 0283.Move Zeroes
- 0290.Word Pattern
- 0292.Nim Game
- 0295.Find Median from Data Stream
- 0300.Longest Increasing Subsequence
- 0307.Range Sum Query - Mutable
- 0312.Burst Balloons
- 0318.Maximum Product of Word Lengths
- 0319.Bulb Switcher
- 0326.Power of Three
- 0328.Odd Even Linked List
- 0329.Longest Increasing Path in a Matrix
- 0331.Verify Preorder Serialization of a Binary Tree
- 0335.Self Crossing
- 0336.Palindrome Pairs
- 0337.House Robber III
- 0342.Power of Four
- 0343.Integer Break
- 0344.Reverse String
- 0347.Top K Frequent Elements
- 0349.Intersection of Two Arrays
- 0350.Intersection of Two Arrays II
- 0355.Design Twitter
- 0365.Water and Jug Problem
- 0367.Valid Perfect Square
- 0371.Sum of Two Integers
- 0374.Guess Number Higher or Lower
- 0376.Wiggle Subsequence
- 0384.Shuffle an Array
- 0387.First Unique Character in a String
- 0392.Is Subsequence
- 0393.UTF-8 Validation
- 0394.Decode String
- 0397.Integer Replacement
- 0399.Find the Difference
- 0401.Binary Watch
- 0402.Remove K Digits
- 0404.Sum of Left Leaves
- 0405.Convert a Number to Hexadecimal
- 0406.Queue Reconstruction by Height
- 0410.Split Array Largest Sum
- 0412.Fizz Buzz
- 0414.Third Maximum Number
- 0415.Add Strings
- 0421.Maximum XOR of Two Numbers in an Array
- 0423.Reconstruct Original Digits from English
- 0424.Longest Repeating Character Replacement
- 0427.Construct Quad Tree
- 0429.N-ary Tree Level Order Traversal
- 0430.Flatten a Multilevel Doubly Linked List
- 0434.Number of Segments in a String
- 0437.Path Sum III
- 0438.Find All Anagrams in a String
- 0441.Arranging Coins
- 0443.String Compression
- 0445.Add Two Numbers II
- 0448.Find All Numbers Disappeared in an Array
- 0450.Delete Node in a BST
- 0452.Minimum Number of Arrows to Burst Balloons
- 0453.Minimum Moves to Equal Array Elements
- 0454.4Sum II
- 0455.Assign Cookies
- 0456.132 Pattern
- 0457.Circular Array Loop
- 0458.Poor Pigs
- 0459.Repeated Substring Pattern
- 0461.Hamming Distance
- 0462.Minimum Moves to Equal Array Elements II
- 0473.Matchsticks to Square
- 0475.Heaters
- 0476.Number Complement
- 0483.Smallest Good Base
- 0485. Max Consecutive Ones
- 0486.Predict the Winner
- 0493.Reverse Pairs
- 0496.Next Greater Element I
- 0500.Keyboard Row
- 0503.Next Greater Element II
- 0504.Base 7
- 0506.Relative Ranks
- 0509.Fibonacci
- 0518.Coin Change 2
- 0521.Longest Uncommon Subsequence I
- 0523.Continuous Subarray Sum
- 0525.Contiguous Array
- 0526.Beautiful Arrangement
- 0530.Minimum Absolute Difference in BST
- 0538.Convert BST to Greater Tree
- 0540.Single Element in a Sorted Array
- 0541.Reverse String II
- 0542.01 Matrix
- 0543.Diameter of Binary Tree
- 0554.Brick Wall
- 0556.Next Greater Element III
- 0557.Reverse Words in a String III
- 0559.Maximum Depth of N-ary Tree
- 0560.Subarray Sum Equals K
- 0561.Array Partition I
- 0563.Binary Tree Tilt
- 0567.Permutation in String
- 0572.Subtree of Another Tree
- 0576.Out of Boundary Paths
- 0581.Shortest Unsorted Continuous Subarray
- 0589.N-ary Tree Preorder Traversal
- 0590.N-ary Tree Postorder Traversal
- 0595.Big Countries
- 0596.Classes More Than 5 Students
- 0605.Can Place Flowers
- 0606.Construct String from Binary Tree
- 0611.Valid Triangle Number
- 0617.Merge Two Binary Trees
- 0620.Not Boring Movies
- 0622.Design Circular Queue
- 0627.Swap Salary
- 0633.Sum of Square Numbers
- 0637.Average of Levels in Binary Tree
- 0650.2 Keys Keyboard
- 0652.Find Duplicate Subtrees
- 0657.Robot Return to Origin
- 0664.Strange Printer
- 0665.Non-decreasing Array
- 0669.Trim a Binary Search Tree
- 0670.Maximum Swap
- 0671.Second Minimum Node In a Binary Tree
- 0673.Number of Longest Increasing Subsequence
- 0674.Longest Continuous Increasing Subsequence
- 0684.Redundant Connection
- 0687.Longest Univalue Path
- 0690.Employee Importance
- 0695.Max Area of Island
- 0696.Count Binary Substrings
- 0700.Search in a Binary Search Tree
- 0701.Insert into a Binary Search Tree
- 0703.Kth Largest Element in a Stream
- 0704.Binary Search
- 0707.Design Linked List
- 0724.Find Pivot Index
- 0725.Split Linked List in Parts
- 0728.Self Dividing Numbers
- 0735.Asteroid Collision
- 0739.Daily Temperatures
- 0743.Network Delay Time
- 0744.Find Smallest Letter Greater Than Target
- 0746.Min Cost Climbing Stairs
- 0752.Open the Lock
- 0760.Find Anagram Mappings
- 0762.Prime Number of Set Bits in Binary Representation
- 0763.Partition Labels
- 0769.Max Chunks To Make Sorted
- 0771.Jewels and Stones
- 0777.Swap Adjacent in LR String
- 0783.Minimum Distance Between BST Nodes
- 0784.Letter Case Permutation
- 0789.Escape The Ghosts
- 0797.All Paths From Source to Target
- 0804.Unique Morse Code Words
- 0807.Max Increase to Keep City Skyline
- 0814.Binary Tree Pruning
- 0817.Linked List Components
- 0826.Most Profit Assigning Work
- 0829.Consecutive Numbers Sum
- 0832.Flipping an Image
- 0836.Rectangle Overlap
- 0848.Shifting Letters
- 0852.Peak Index in a Mountain Array
- 0853.Car Fleet
- 0856.Score of Parentheses
- 0857.Minimum Cost to Hire K Workers
- 0860.Lemonade Change
- 0862.Shortest Subarray with Sum at Least K
- 0867.Transpose Matrix
- 0872.Leaf-Similar Trees
- 0874.Walking Robot Simulation
- 0875.Koko Eating Bananas
- 0876.Middle of the Linked List
- 0878.Nth Magical Number
- 0881.Boats to Save People
- 0883.Projection Area of 3D Shapes
- 0887.Super Egg Drop
- 0889.Construct Binary Tree from Preorder and Postorder Traversal
- 0891.Sum of Subsequence Widths
- 0892.Surface Area of 3D Shapes
- 0896.Monotonic Array
- 0898.Bitwise ORs of Subarrays
- 0905.Sort Array By Parity
- 0912.Sort an Array
- 0914.X of a Kind in a Deck of Cards
- 0915.Partition Array into Disjoint Intervals
- 0917.Reverse Only Letters
- 0918.Maximum Sum Circular Subarray
- 0922.Sort Array By Parity II
- 0926.Flip String to Monotone Increasing
- 0929.Unique Email Addresses
- 0930.Binary Subarrays With Sum
- 0931.Minimum Falling Path Sum
- 0938.Range Sum of BST
- 0941.Valid Mountain Array
- 0944.Delete Columns to Make Sorted
- 0946.Validate Stack Sequences
- 0950.Reveal Cards In Increasing Order
- 0952.Largest Component Size by Common Factor
- 0953.Verifying an Alien Dictionary
- 0955.Delete Columns to Make Sorted II
- 0958.Check Completeness of a Binary Tree
- 0961.N-Repeated Element in Size 2N Array
- 0965.Univalued Binary Tree
- 0973.K Closest Points to Origin
- 0976.Largest Perimeter Triangle
- 0977.Squares of a Sorted Array
- 0978.Longest Turbulent Subarray
- 0985.Sum of Even Numbers After Queries
- 0987.Vertical Order Traversal of a Binary Tree
- 0989.Add to Array-Form of Integer
- 0994.Rotten Oranges
- 1004. Max Consecutive Ones III
- 1005.Maximize Sum Of Array After K Negations
- 1006.Clumsy Factorial
- 1007.Minimum Domino Rotations For Equal Row
- 1008.Construct Binary Search Tree from Preorder Traversal
- 1009.Complement of Base 10 Integer
- 1010.Pairs of Songs With Total Durations Divisible by 60
- 1012.Complement of Base 10 Integer
- 1013.Pairs of Songs With Total Durations Divisible by 60
- 1014.Capacity To Ship Packages Within D Days
- 1017.Convert to Base -2
- 1019.Next Greater Node In Linked List
- 1020.Partition Array Into Three Parts With Equal Sum
- 1021.Best Sightseeing Pair
- 1021.Remove Outermost Parentheses
- 1022.Smallest Integer Divisible by K
- 1022.Sum of Root To Leaf Binary Numbers
- 1023.Binary String With Substrings Representing 1 To N
- 1024.Video Stitching
- 1025.Divisor Game
- 1026.Maximum Difference Between Node and Ancestor
- 1027.Longest Arithmetic Sequence
- 1028.Recover a Tree From Preorder Traversal
- 1029.Two City Scheduling
- 1030.Matrix Cells in Distance Order
- 1033.Moving Stones Until Consecutive
- 1034.Coloring A Border
- 1037.Valid Boomerang
- 1038.Binary Search Tree to Greater Sum Tree
- 1041.Robot Bounded In Circle
- 1043.Partition Array for Maximum Sum
- 1046.Last Stone Weight
- 1047.Remove All Adjacent Duplicates In String
- 1048.Longest String Chain
- 1049.Last Stone Weight I
- 1051.Height Checker
- 1052.Grumpy Bookstore Owner
- 1053.Previous Permutation With One Swap
- 1054.Distant Barcodes
- 1071.Greatest Common Divisor of Strings
- 1072.Flip Columns For Maximum Number of Equal Rows
- 1073.Adding Two Negabinary Numbers
- 1079.Letter Tile Possibilities
- 1080.Insufficient Nodes in Root to Leaf Paths
- 1081.Smallest Subsequence of Distinct Characters
- 1089.Duplicate Zeros
- 1090.Largest Values From Labels
- 1091.Shortest Path in Binary Matrix
- 1093.Statistics from a Large Sample
- 1094.Car Pooling
- 1095.Find in Mountain Array
- 1103.Distribute Candies to People
- 1104.Path In Zigzag Labelled Binary Tree
- 1108.Defanging an IP Address
- 1109.Corporate Flight Bookings
- 1110.Delete Nodes And Return Forest
- 1111.Maximum Nesting Depth of Two Valid Parentheses Strings
- 1114.Print in Order
- 1115.Print FooBar Alternately
- 1116.Print Zero Even Odd
- 1117.Building H2O
- 1122.Relative Sort Array
- 1123.Lowest Common Ancestor of Deepest Leaves
- 1124.Longest Well-Performing Interval
- 1128.Number of Equivalent Domino Pairs
- 1137.N-th Tribonacci Number
- 1138.Alphabet Board Path
- 1139.Largest 1-Bordered Square
- 1140.Stone Game II
- 1144.Decrease Elements To Make Array Zigzag
- 1147.Longest Chunked Palindrome Decomposition
- 1154.Day of the Year
- 1155.Number of Dice Rolls With Target Sum
- 1171.Remove Zero Sum Consecutive Nodes from Linked List
- 1184.Distance Between Bus Stops
- 1185.Day of the Week
- 1234.Replace the Substring for Balanced String
- 1275.Find Winner on a Tic Tac Toe Game
- 1276.Number of Burgers with No Waste of Ingredients
- 1277.Count Squre Submatrices with All Ones
- 1278.Palindrome Partitioning III
- 1287.Element Appearing More Than 25% In Sorted Array
- 1290.Convert Binary Number in a Linked List to Integer
- 1346.Check If N and Its Double Exist
- 1347.Minimum Number of Steps to Make Two Strings Anagram
- 5075.Number of Submatrices That Sum to Target
- 5076.Greatest Common Divisor of Strings
- 5077.Flip Columns For Maximum Number of Equal Rows
- 5078.Adding Two Negabinary Numbers
- 5083.Occurrences After Bigram
- 5084.Insufficient Nodes in Root to Leaf Paths
- 5086.Smallest Subsequence of Distinct Characters
- 5087.Letter Tile Possibilities
- README.md
.gitignore
LICENSE
README.md
README_CN.md

0065.Valid

Import C# solutions from https://github.com/kfstorm/LeetCode

Jan 26, 2020

8653801 · Jan 26, 2020

Name	Name	Last commit message	Last commit date
parent directory ..
Solution.cs	Solution.cs	Import C# solutions from https://github.com/kfstorm/LeetCode	Jan 26, 2020
Solution.java	Solution.java	65. Valid Number (java)	Dec 7, 2018
Solution.py	Solution.py	Create 65 - Python	Jan 31, 2019

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