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add Leetcode 36 Valid Sudoku
bug-author Jul 28, 2022
5f8435c
add Leetcode 2133 Check if Every Row and Column Contains All Numbers
bug-author Jul 28, 2022
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5 changes: 3 additions & 2 deletions README.md
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Expand Up @@ -24,7 +24,7 @@ Two great online resources have been leveraged to compile the list:
| 10 | [Greedy Algorithm](#greedy-algorithm) | 10 |
| 11 | [Backtracking](#backtracking) | 22 |
| 12 | [Dynamic Programming](#dynamic-programming) | 29 |
| 13 | [Miscellaneous (string, array, math, bit manipulation)](#miscellaneous) | 35 |
| 13 | [Miscellaneous (string, array, math, bit manipulation)](#miscellaneous) | 37 |
| 14 | [Advanced Topics (Trie, Topological sorting, Union find)](#advanced-topics) | 14 |
| | | 259 (total) |

Expand Down Expand Up @@ -309,7 +309,8 @@ heap/priority queue and sorting algorithms which have time complexities of `O(nl
[769](https://leetcode.com/problems/max-chunks-to-make-sorted/) | Max Chunks To Make Sorted | Medium | | Iterate through array. If current max is smaller than or equal to current index, the the number of chunks increases by 1.
[462](https://leetcode.com/problems/minimum-moves-to-equal-array-elements-ii/) | Minimum Moves to Equal Array Elements II | Medium | [215](https://leetcode.com/problems/kth-largest-element-in-an-array/) | Quick select algorithm.
[287](https://leetcode.com/problems/find-the-duplicate-number/) | Find the Duplicate Number | Medium | | Slow and fast pointers + cycle detection.

[2133](https://leetcode.com/problems/check-if-every-row-and-column-contains-all-numbers/) | Check if Every Row and Column Contains All Numbers | Easy | | validate nxn matrix
[36](https://leetcode.com/problems/valid-sudoku/) | Valid Sudoku | Medium | | Check if 9x9 Sudoku matrix is valid
#### Math

Typical math problems include finding prime numbers, gcd (greatest common divisor), lcm (least common multiple),
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