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/6.c)    | Medium     |
| 7   | [Reverse Integer](https://leetcode.com/problems/reverse-integer)                                                                                      | [C](./src/7.c)    | Medium     |
| 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  | [Longest Common Prefix](https://leetcode.com/problems/longest-common-prefix)                                                                          | [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  | [Find the Index of the First Occurrence in a String](https://leetcode.com/problems/find-the-index-of-the-first-occurrence-in-a-string)                | [C](./src/28.c)   | Medium     |
| 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)   | Medium     |
| 42  | [Trapping Rain Water](https://leetcode.com/problems/trapping-rain-water)                                                                              | [C](./src/42.c)   | Hard       |
| 50  | [Pow(x, n)](https://leetcode.com/problems/powx-n)                                                                                                     | [C](./src/50.c)   | Medium     |
| 53  | [Maximum Subarray](https://leetcode.com/problems/maximum-subarray)                                                                                    | [C](./src/53.c)   | Medium     |
| 62  | [Unique Paths](https://leetcode.com/problems/unique-paths)                                                                                            | [C](./src/62.c)   | Medium     |
| 63  | [Unique Paths II](https://leetcode.com/problems/unique-paths-ii)                                                                                      | [C](./src/63.c)   | Medium     |
| 66  | [Plus One](https://leetcode.com/problems/plus-one)                                                                                                    | [C](./src/66.c)   | Easy       |
| 75  | [Sort Colors](https://leetcode.com/problems/sort-colors)                                                                                              | [C](./src/75.c)   | Medium     |
| 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)   | Easy       |
| 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       |
| 119 | [Pascal's Triangle II](https://leetcode.com/problems/pascals-triangle-ii)                                                                             | [C](./src/119.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       |
| 124 | [Binary Tree Maximum Path Sum](https://leetcode.com/problems/binary-tree-maximum-path-sum)                                                            | [C](./src/124.c)  | Hard       |
| 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)  | Medium     |
| 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)                                                                                                      | [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       |
| 485 | [Max Consecutive Ones](https://leetcode.com/problems/max-consecutive-ones)                                                                            | [C](./src/485.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](https://leetcode.com/problems/array-partition)                                                                                      | [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 Substrings](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       |
| 684 | [Redundant Connection](https://leetcode.com/problems/redundant-connection)                                                                            | [C](./src/684.c)  | Medium     |
| 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)                                                  | [C](./src/807.c)  | Medium     |
| 841 | [Keys and Rooms](https://leetcode.com/problems/keys-and-rooms)                                                                                        | [C](./src/841.c)  | Medium     |
| 852 | [Peak Index in a Mountain Array](https://leetcode.com/problems/peak-index-in-a-mountain-array)                                                        | [C](./src/852.c)  | Medium     |
| 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       |
| 931 | [Minimum Falling Path Sum](https://leetcode.com/problems/minimum-falling-path-sum)                                                                    | [C](./src/931.c)  | Medium     |
| 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     |
| 1008| [Construct Binary Search Tree from Preorder Traversal](https://leetcode.com/problems/construct-binary-search-tree-from-preorder-traversal)            | [C](./src/1008.c) | Medium     |
| 1009| [Complement of Base 10 Integer](https://leetcode.com/problems/complement-of-base-10-integer)                                                          | [C](./src/1009.c) | Easy       |
| 1019| [Next Greater Node In Linked List](https://leetcode.com/problems/next-greater-node-in-linked-list)                                                    | [C](./src/1019.c) | Medium     |
| 1026| [Maximum Difference Between Node and Ancestor](https://leetcode.com/problems/maximum-difference-between-node-and-ancestor)                            | [C](./src/1026.c) | Medium     |
| 1089| [Duplicate Zeros](https://leetcode.com/problems/duplicate-zeros)                                                                                      | [C](./src/1089.c) | Easy       |
| 1147| [Longest Chunked Palindrome Decomposition](https://leetcode.com/problems/longest-chunked-palindrome-decomposition)                                    | [C](./src/1147.c) | Hard       |
| 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       |
| 1283| [Find the Smallest Divisor Given a Threshold](https://leetcode.com/problems/find-the-smallest-divisor-given-a-threshold)                              | [C](./src/1283.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     |
| 1657| [Determine if Two Strings Are Close](https://leetcode.com/problems/determine-if-two-strings-are-close)                                                | [C](./src/1657.c) | Medium     |
| 1695| [Maximum Erasure Value](https://leetcode.com/problems/maximum-erasure-value)                                                                          | [C](./src/1695.c) | Medium     |
| 1704| [Determine if String Halves Are Alike](https://leetcode.com/problems/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       |
| 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     |
| 1833| [Maximum Ice Cream Bars](https://leetcode.com/problems/maximum-ice-cream-bars)                                                                        | [C](./src/1833.c) | Medium     |
| 1838| [Frequency of the Most Frequent Element](https://leetcode.com/problems/frequency-of-the-most-frequent-element)                                        | [C](./src/1838.c) | Medium     |
| 2024| [Maximize the Confusion of an Exam](https://leetcode.com/problems/maximize-the-confusion-of-an-exam)                                                  | [C](./src/2024.c) | Medium     |
| 2095| [Delete the Middle Node of a Linked List](https://leetcode.com/problems/delete-the-middle-node-of-a-linked-list)                                      | [C](./src/2095.c) | Medium     |
| 2125| [Number of Laser Beams in a Bank](https://leetcode.com/problems/number-of-laser-beams-in-a-bank)                                                      | [C](./src/2125.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     |
| 2279| [Maximum Bags With Full Capacity of Rocks](https://leetcode.com/problems/maximum-bags-with-full-capacity-of-rocks)                                    | [C](./src/2279.c) | Medium     |
| 2304| [Minimum Path Cost in a Grid](https://leetcode.com/problems/minimum-path-cost-in-a-grid)                                                              | [C](./src/2304.c) | Medium     |
| 2482| [Difference Between Ones and Zeros in Row and Column](https://leetcode.com/problems/difference-between-ones-and-zeros-in-row-and-column)              | [C](./src/2482.c) | Medium     |
| 2501| [Longest Square Streak in an Array](https://leetcode.com/problems/longest-square-streak-in-an-array)                                                  | [C](./src/2501.c) | Medium     |