TheAlgorithms-C/leetcode/DIRECTORY.md

# LeetCode

### LeetCode Algorithm

| #    | Title                                                                                                                           | Solution          | Difficulty |
| ---- | ------------------------------------------------------------------------------------------------------------------------------- | ----------------- | ---------- |
| 1    | [Two Sum](https://leetcode.com/problems/two-sum/)                                                                               | [C](./src/1.c)    | Easy       |
| 2    | [Add Two Numbers](https://leetcode.com/problems/add-two-numbers/)                                                               | [C](./src/2.c)    | Medium     |
| 3    | [Longest Substring Without Repeating Characters](https://leetcode.com/problems/longest-substring-without-repeating-characters/) | [C](./src/3.c)    | Medium     |
| 4    | [Median of Two Sorted Arrays](https://leetcode.com/problems/median-of-two-sorted-arrays/)                                       | [C](./src/4.c)    | Hard       |
| 6    | [ZigZag conversion](https://leetcode.com/problems/zigzag-conversion/)                                                           | [C](./src/4.c)    | Medium     |
| 7    | [Reverse Integer](https://leetcode.com/problems/reverse-integer/)                                                               | [C](./src/7.c)    | Easy       |
| 8    | [String to Integer (atoi)](https://leetcode.com/problems/string-to-integer-atoi)                                                | [C](./src/8.c)    | Medium     |
| 9    | [Palindrome Number](https://leetcode.com/problems/palindrome-number/)                                                           | [C](./src/9.c)    | Easy       |
| 10   | [Regular Expression Matching](https://leetcode.com/problems/regular-expression-matching/)                                       | [C](./src/10.c)   | Hard       |
| 11   | [Container With Most Water](https://leetcode.com/problems/container-with-most-water/)                                           | [C](./src/11.c)   | Medium     |
| 12   | [Integer to Roman](https://leetcode.com/problems/integer-to-roman)                                                              | [C](./src/12.c)   | Medium     |
| 13   | [Roman to Integer](https://leetcode.com/problems/roman-to-integer/)                                                             | [C](./src/13.c)   | Easy       |
| 14   | [Max Consecutive Ones](https://leetcode.com/problems/max-consecutive-ones/)                                                     | [C](./src/14.c)   | Easy       |
| 20   | [Valid Parentheses](https://leetcode.com/problems/valid-parentheses/)                                                           | [C](./src/20.c)   | Easy       |
| 21   | [Merge Two Sorted Lists](https://leetcode.com/problems/merge-two-sorted-lists/)                                                 | [C](./src/21.c)   | Easy       |
| 24   | [Swap Nodes in Pairs](https://leetcode.com/problems/swap-nodes-in-pairs/)                                                       | [C](./src/24.c)   | Medium     |
| 26   | [Remove Duplicates from Sorted Array](https://leetcode.com/problems/remove-duplicates-from-sorted-array/)                       | [C](./src/26.c)   | Easy       |
| 27   | [Remove Element](https://leetcode.com/problems/remove-element/)                                                                 | [C](./src/27.c)   | Easy       |
| 28   | [Implement strStr()](https://leetcode.com/problems/implement-strstr/)                                                           | [C](./src/28.c)   | Easy       |
| 29   | [Divide Two Integers](https://leetcode.com/problems/divide-two-integers/)                                                       | [C](./src/29.c)   | Medium     |
| 32   | [Longest Valid Parentheses](https://leetcode.com/problems/longest-valid-parentheses/)                                           | [C](./src/32.c)   | Hard       |
| 35   | [Search Insert Position](https://leetcode.com/problems/search-insert-position/)                                                 | [C](./src/35.c)   | Easy       |
| 37   | [Sudoku Solver](https://leetcode.com/problems/sudoku-solver/)                                                                   | [C](./src/37.c)   | Hard       |
| 38   | [Count and Say](https://leetcode.com/problems/count-and-say/)                                                                   | [C](./src/38.c)   | Easy       |
| 42   | [Trapping Rain Water](https://leetcode.com/problems/trapping-rain-water/)                                                       | [C](./src/42.c)   | Hard       |
| 53   | [Maximum Subarray](https://leetcode.com/problems/maximum-subarray/)                                                             | [C](./src/53.c)   | Easy       |
| 62   | [Unique Paths](https://leetcode.com/problems/unique-paths/description/)                                                         | [C](./src/62.c)   | Medium     |
| 66   | [Plus One](https://leetcode.com/problems/plus-one/)                                                                             | [C](./src/66.c)   | Easy       |
| 79   | [Word Search](https://leetcode.com/problems/word-search/)                                                                       | [C](./src/79.c)   | Medium     |
| 82   | [Remove Duplicates from Sorted List II](https://leetcode.com/problems/remove-duplicates-from-sorted-list-ii/)                   | [C](./src/82.c)   | Medium     |
| 83   | [Remove Duplicates from Sorted List](https://leetcode.com/problems/remove-duplicates-from-sorted-list/)                         | [C](./src/83.c)   | Easy       |
| 94   | [Binary Tree Inorder Traversal](https://leetcode.com/problems/binary-tree-inorder-traversal/)                                   | [C](./src/94.c)   | Medium     |
| 98   | [Validate Binary Search Tree](https://leetcode.com/problems/validate-binary-search-tree/)                                       | [C](./src/98.c)   | Medium     |
| 101  | [Symmetric Tree](https://leetcode.com/problems/symmetric-tree/)                                                                 | [C](./src/101.c)  | Easy       |
| 104  | [Maximum Depth of Binary Tree](https://leetcode.com/problems/maximum-depth-of-binary-tree/)                                     | [C](./src/104.c)  | Easy       |
| 108  | [Convert Sorted Array to Binary Search Tree](https://leetcode.com/problems/convert-sorted-array-to-binary-search-tree/)         | [C](./src/108.c)  | Easy       |
| 109  | [Convert Sorted List to Binary Search Tree](https://leetcode.com/problems/convert-sorted-list-to-binary-search-tree/)           | [C](./src/109.c)  | Medium     |
| 110  | [Balanced Binary Tree](https://leetcode.com/problems/balanced-binary-tree/)                                                     | [C](./src/110.c)  | Easy       |
| 112  | [Path Sum](https://leetcode.com/problems/path-sum/)                                                                             | [C](./src/112.c)  | Easy       |
| 118  | [Pascal's Triangle](https://leetcode.com/problems/pascals-triangle/)                                                            | [C](./src/118.c)  | Easy       |
| 121  | [Best Time to Buy and Sell Stock](https://leetcode.com/problems/best-time-to-buy-and-sell-stock/)                               | [C](./src/121.c)  | Easy       |
| 125  | [Valid Palindrome](https://leetcode.com/problems/valid-palindrome/)                                                             | [C](./src/125.c)  | Easy       |
| 136  | [Single Number](https://leetcode.com/problems/single-number/)                                                                   | [C](./src/136.c)  | Easy       |
| 141  | [Linked List Cycle](https://leetcode.com/problems/linked-list-cycle/)                                                           | [C](./src/141.c)  | Easy       |
| 142  | [Linked List Cycle II](https://leetcode.com/problems/linked-list-cycle-ii/)                                                     | [C](./src/142.c)  | Medium     |
| 153  | [Find Minimum in Rotated Sorted Array](https://leetcode.com/problems/find-minimum-in-rotated-sorted-array/)                     | [C](./src/153.c)  | Medium     |
| 160  | [Intersection of Two Linked Lists](https://leetcode.com/problems/intersection-of-two-linked-lists/)                             | [C](./src/160.c)  | Easy       |
| 169  | [Majority Element](https://leetcode.com/problems/majority-element/)                                                             | [C](./src/169.c)  | Easy       |
| 173  | [Binary Search Tree Iterator](https://leetcode.com/problems/binary-search-tree-iterator/)                                       | [C](./src/173.c)  | Medium     |
| 189  | [Rotate Array](https://leetcode.com/problems/rotate-array)                                                                      | [C](./src/189.c)  | Easy       |
| 190  | [Reverse Bits](https://leetcode.com/problems/reverse-bits/)                                                                     | [C](./src/190.c)  | Easy       |
| 191  | [Number of 1 Bits](https://leetcode.com/problems/number-of-1-bits/)                                                             | [C](./src/191.c)  | Easy       |
| 201  | [Bitwise AND of Numbers Range](https://leetcode.com/problems/bitwise-and-of-numbers-range/)                                     | [C](./src/201.c)  | Medium     |
| 203  | [Remove Linked List Elements](https://leetcode.com/problems/remove-linked-list-elements/)                                       | [C](./src/203.c)  | Easy       |
| 206  | [Reverse Linked List](https://leetcode.com/problems/reverse-linked-list/)                                                       | [C](./src/206.c)  | Easy       |
| 215  | [Kth Largest Element in an Array](https://leetcode.com/problems/kth-largest-element-in-an-array/)                               | [C](./src/215.c)  | Medium     |
| 217  | [Contains Duplicate](https://leetcode.com/problems/contains-duplicate/)                                                         | [C](./src/217.c)  | Easy       |
| 223  | [Rectangle Area](https://leetcode.com/problems/rectangle-area/)                                                                 | [C](./src/223.c)  | Medium     |
| 226  | [Invert Binary Tree](https://leetcode.com/problems/invert-binary-tree/)                                                         | [C](./src/226.c)  | Easy       |
| 230  | [Kth Smallest Element in a BST](https://leetcode.com/problems/kth-smallest-element-in-a-bst/)                                   | [C](./src/230.c)  | Medium     |
| 231  | [Power of Two](https://leetcode.com/problems/power-of-two/)                                                                     | [C](./src/231.c)  | Easy       |
| 234  | [Palindrome Linked List](https://leetcode.com/problems/palindrome-linked-list/)                                                 | [C](./src/234.c)  | Easy       |
| 236  | [Lowest Common Ancestor of a Binary Tree](https://leetcode.com/problems/lowest-common-ancestor-of-a-binary-tree/)               | [C](./src/236.c)  | Medium     |
| 242  | [Valid Anagram](https://leetcode.com/problems/valid-anagram/)                                                                   | [C](./src/242.c)  | Easy       |
| 268  | [Missing Number](https://leetcode.com/problems/missing-number/)                                                                 | [C](./src/268.c)  | Easy       |
| 274  | [H-Index](https://leetcode.com/problems/h-index/description/)                                                                   | [C](./src/274.c)  | Medium     |
| 278  | [First Bad Version](https://leetcode.com/problems/first-bad-version/)                                                           | [C](./src/278.c)  | Easy       |
| 283  | [Move Zeroes](https://leetcode.com/problems/move-zeroes/)                                                                       | [C](./src/283.c)  | Easy       |
| 287  | [Find the Duplicate Number](https://leetcode.com/problems/find-the-duplicate-number/)                                           | [C](./src/287.c)  | Medium     |
| 344  | [Reverse String](https://leetcode.com/problems/reverse-string/)                                                                 | [C](./src/344.c)  | Easy       |
| 367  | [Valid Perfect Square](https://leetcode.com/problems/valid-perfect-square/)                                                     | [C](./src/367.c)  | Easy       |
| 387  | [First Unique Character in a String](https://leetcode.com/problems/first-unique-character-in-a-string/)                         | [C](./src/387.c)  | Easy       |
| 389  | [Find the Difference](https://leetcode.com/problems/find-the-difference/)                                                       | [C](./src/389.c)  | Easy       |
| 404  | [Sum of Left Leaves](https://leetcode.com/problems/sum-of-left-leaves/)                                                         | [C](./src/404.c)  | Easy       |
| 442  | [Find All Duplicates in an Array](https://leetcode.com/problems/find-all-duplicates-in-an-array/)                               | [C](./src/442.c)  | Medium     |
| 461  | [Hamming Distance](https://leetcode.com/problems/hamming-distance/)                                                             | [C](./src/461.c)  | Easy       |
| 476  | [Number Complement](https://leetcode.com/problems/number-complement/)                                                           | [C](./src/476.c)  | Easy       |
| 509  | [Fibonacci Number](https://leetcode.com/problems/fibonacci-number/)                                                             | [C](./src/509.c)  | Easy       |
| 520  | [Detect Capital](https://leetcode.com/problems/detect-capital/)                                                                 | [C](./src/520.c)  | Easy       |
| 561  | [Array Partition I](https://leetcode.com/problems/array-partition-i/)                                                           | [C](./src/561.c)  | Easy       |
| 617  | [Merge Two Binary Trees](https://leetcode.com/problems/merge-two-binary-trees/)                                                 | [C](./src/617.c)  | Easy       |
| 647  | [Palindromic Substring](https://leetcode.com/problems/palindromic-substrings/)                                                  | [C](./src/647.c)  | Medium     |
| 669  | [Trim a Binary Search Tree](https://leetcode.com/problems/trim-a-binary-search-tree/)                                           | [C](./src/669.c)  | Medium     |
| 674  | [Longest Continuous Increasing Subsequence](https://leetcode.com/problems/longest-continuous-increasing-subsequence/)           | [C](./src/674.c)  | Easy       |
| 700  | [Search in a Binary Search Tree](https://leetcode.com/problems/search-in-a-binary-search-tree/)                                 | [C](./src/700.c)  | Easy       |
| 701  | [Insert into a Binary Search Tree](https://leetcode.com/problems/insert-into-a-binary-search-tree/)                             | [C](./src/701.c)  | Medium     |
| 704  | [Binary Search](https://leetcode.com/problems/binary-search/)                                                                   | [C](./src/704.c)  | Easy       |
| 709  | [To Lower Case](https://leetcode.com/problems/to-lower-case/)                                                                   | [C](./src/709.c)  | Easy       |
| 771  | [Jewels and Stones](https://leetcode.com/problems/jewels-and-stones/)                                                           | [C](./src/771.c)  | Easy       |
| 807  | [Max Increase to Keep City Skyline](https://leetcode.com/problems/max-increase-to-keep-city-skyline/description/)               | [C](./src/807.c)  | Medium     |
| 852  | [Peak Index in a Mountain Array](https://leetcode.com/problems/peak-index-in-a-mountain-array/)                                 | [C](./src/852.c)  | Easy       |
| 876  | [Middle of the Linked List](https://leetcode.com/problems/middle-of-the-linked-list/)                                           | [C](./src/876.c)  | Easy       |
| 901  | [Online Stock Span](https://leetcode.com/problems/online-stock-span/)                                                           | [C](./src/901.c)  | Medium     |
| 905  | [Sort Array By Parity](https://leetcode.com/problems/sort-array-by-parity/)                                                     | [C](./src/905.c)  | Easy       |
| 917  | [Reverse Only Letters](https://leetcode.com/problems/reverse-only-letters/)                                                     | [C](./src/917.c)  | Easy       |
| 938  | [Range Sum of BST](https://leetcode.com/problems/range-sum-of-bst/)                                                             | [C](./src/938.c)  | Easy       |
| 965  | [Univalued Binary Tree](https://leetcode.com/problems/univalued-binary-tree/)                                                   | [C](./src/965.c)  | Easy       |
| 977  | [Squares of a Sorted Array](https://leetcode.com/problems/squares-of-a-sorted-array/)                                           | [C](./src/977.c)  | Easy       |
| 985  | [Sum of Even Numbers After Queries](https://leetcode.com/problems/sum-of-even-numbers-after-queries/)                           | [C](./src/985.c)  | Medium     |
| 1009 | [Complement of Base 10 Integer](https://leetcode.com/problems/complement-of-base-10-integer/)                                   | [C](./src/1009.c) | Easy       |
| 1089 | [Duplicate Zeros](https://leetcode.com/problems/duplicate-zeros/)                                                               | [C](./src/1089.c) | Easy       |
| 1184 | [Distance Between Bus Stops](https://leetcode.com/problems/distance-between-bus-stops/)                                         | [C](./src/1184.c) | Easy       |
| 1189 | [Maximum Number of Balloons](https://leetcode.com/problems/maximum-number-of-balloons/)                                         | [C](./src/1189.c) | Easy       |
| 1207 | [Unique Number of Occurrences](https://leetcode.com/problems/unique-number-of-occurrences/)                                     | [C](./src/1207.c) | Easy       |
| 1695 | [Maximum Erasure Value](https://leetcode.com/problems/maximum-erasure-value/)                                                   | [C](./src/1695.c) | Medium     |
| 1769 | [Minimum Number of Operations to Move All Balls to Each Box](https://leetcode.com/problems/minimum-number-of-operations-to-move-all-balls-to-each-box/)                                     | [C](./src/1769.c) | Medium     |
| 1524 | [Number of Sub-arrays With Odd Sum](https://leetcode.com/problems/number-of-sub-arrays-with-odd-sum/)                           | [C](./src/1524.c) | Medium     |
| 1653 | [Minimum Deletions to Make String Balanced](https://leetcode.com/problems/minimum-deletions-to-make-string-balanced/)           | [C](./src/1653.c) | Medium     |
| 1704 | [Determine if String Halves Are Alike](Determine if String Halves Are Alike)                                                    | [C](./src/1704.c) | Easy       |
| 1752 | [Check if Array Is Sorted and Rotated](https://leetcode.com/problems/check-if-array-is-sorted-and-rotated/)                     | [C](./src/1752.c) | Easy       |
| 2024 | [Maximize the Confusion of an Exam](https://leetcode.com/problems/maximize-the-confusion-of-an-exam/)                           | [C](./src/2024.c) | Medium     |
| 2130 | [Maximum Twin Sum of a Linked List](https://leetcode.com/problems/maximum-twin-sum-of-a-linked-list/)                           | [C](./src/2130.c) | Medium     |
| 2222 | [Number of Ways to Select Buildings](https://leetcode.com/problems/number-of-ways-to-select-buildings/)                         | [C](./src/2222.c) | Medium     |
| 2256 | [Minimum Average Difference](https://leetcode.com/problems/minimum-average-difference/)                                         | [C](./src/2256.c) | Medium     |
| 2270 | [Number of Ways to Split Array](https://leetcode.com/problems/number-of-ways-to-split-array/)                                   | [C](./src/2270.c) | Medium     |
| 2304 | [Minimum Path Cost in a Grid](https://leetcode.com/problems/minimum-path-cost-in-a-grid/)                                       | [C](./src/2304.c) | Medium     |