_{[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/)} | _{<div align='center'>[✔️](c%2F287-Find-The-Duplicate-Number.c)</div>} | _{<div align='center'>[✔️](cpp%2F286-Walls-And-Gates.cpp)</div>} | _{<div align='center'>[✔️](csharp%2F286-Walls-and-Gates.cs)</div>} | _{<div align='center'>[✔️](go%2F287-Find-the-Duplicate-Number.go)</div>} | _{<div align='center'>[✔️](java%2F286-Walls-and-Gates.java)</div>} | _{<div align='center'>[✔️](javascript%2F286-Walls-And-Gates.js)</div>} | _{<div align='center'>[✔️](kotlin%2F287-Find-The-Duplicate-Number.kt)</div>} | _{<div align='center'>[✔️](python%2F28-Implement-strStr.py)</div>} | _{<div align='center'>[✔️](ruby%2F287-Find-The-Duplicate-Number.rb)</div>} | _{<div align='center'>❌</div>} | _{<div align='center'>❌</div>} | _{<div align='center'>[✔️](swift%2F287-Find-The-Duplicate-Number.swift)</div>} | _{<div align='center'>[✔️](typescript%2F287-Find-the-Duplicate-Number.ts)</div>}

_{[280 - Wiggle Sort](https://leetcode.com/problems/wiggle-sort/)} | _{<divalign='center'>❌</div>} | _{<divalign='center'>❌</div>} | _{<divalign='center'>❌</div>} | _{<divalign='center'>❌</div>} | _{<divalign='center'>❌</div>} | _{<divalign='center'>❌</div>} | _{<divalign='center'>❌</div>} | _{<divalign='center'>❌</div>} | _{<divalign='center'>❌</div>} | _{<divalign='center'>❌</div>} | _{<divalign='center'>❌</div>} | _{<divalign='center'>❌</div>} | _{<divalign='center'>❌</div>}

_{[179 - Largest Number](https://leetcode.com/problems/largest-number/)} | _{<divalign='center'>❌</div>} | _{<divalign='center'>❌</div>} | _{<divalign='center'>❌</div>} | _{<divalign='center'>❌</div>} | _{<divalign='center'>❌</div>} | _{<divalign='center'>❌</div>} | _{<divalign='center'>❌</div>} | _{<divalign='center'>❌</div>} | _{<divalign='center'>❌</div>} | _{<divalign='center'>❌</div>} | _{<divalign='center'>❌</div>} | _{<divalign='center'>❌</div>} | _{<divalign='center'>❌</div>}

_{[523 - Continuous Subarray Sum](https://leetcode.com/problems/continuous-subarray-sum/)} | _{<divalign='center'>❌</div>} | _{<divalign='center'>❌</div>} | _{<divalign='center'>❌</div>} | _{<divalign='center'>❌</div>} | _{<divalign='center'>❌</div>} | _{<divalign='center'>❌</div>} | _{<divalign='center'>❌</div>} | _{<divalign='center'>❌</div>} | _{<divalign='center'>❌</div>} | _{<divalign='center'>❌</div>} | _{<divalign='center'>❌</div>} | _{<divalign='center'>❌</div>} | _{<divalign='center'>❌</div>}

_{[523 - Continuous Subarray Sum](https://leetcode.com/problems/continuous-subarray-sum/)} | _{<divalign='center'>❌</div>} | _{<divalign='center'>❌</div>} | _{<divalign='center'>❌</div>} | _{<divalign='center'>❌</div>} | _{<divalign='center'>[✔️](java%2F523-Continuous-Subarray-Sum.java)</div>} | _{<divalign='center'>❌</div>} | _{<divalign='center'>❌</div>} | _{<divalign='center'>[✔️](python%2F523-Continuous-Subarray-Sum.py)</div>} | _{<divalign='center'>❌</div>} | _{<divalign='center'>❌</div>} | _{<divalign='center'>❌</div>} | _{<divalign='center'>❌</div>} | _{<divalign='center'>❌</div>}

_{[838 - Push Dominoes](https://leetcode.com/problems/push-dominoes/)} | _{<divalign='center'>❌</div>} | _{<divalign='center'>❌</div>} | _{<divalign='center'>❌</div>} | _{<divalign='center'>❌</div>} | _{<divalign='center'>❌</div>} | _{<divalign='center'>❌</div>} | _{<divalign='center'>❌</div>} | _{<divalign='center'>❌</div>} | _{<divalign='center'>❌</div>} | _{<divalign='center'>❌</div>} | _{<divalign='center'>❌</div>} | _{<divalign='center'>❌</div>} | _{<divalign='center'>❌</div>}

_{[187 - Repeated Dna Sequences](https://leetcode.com/problems/repeated-dna-sequences/)} | _{<divalign='center'>❌</div>} | _{<divalign='center'>❌</div>} | _{<divalign='center'>❌</div>} | _{<divalign='center'>❌</div>} | _{<divalign='center'>[✔️](java%2F187-Repeated-DNA-Sequences.java)</div>} | _{<divalign='center'>❌</div>} | _{<divalign='center'>❌</div>} | _{<divalign='center'>❌</div>} | _{<divalign='center'>❌</div>} | _{<divalign='center'>❌</div>} | _{<divalign='center'>❌</div>} | _{<divalign='center'>❌</div>} | _{<divalign='center'>❌</div>}

_{[380 - Insert Delete Get Random O(1)](https://leetcode.com/problems/insert-delete-getrandom-o1/)} | _{<divalign='center'>❌</div>} | _{<divalign='center'>❌</div>} | _{<divalign='center'>❌</div>} | _{<divalign='center'>❌</div>} | _{<divalign='center'>❌</div>} | _{<divalign='center'>❌</div>} | _{<divalign='center'>❌</div>} | _{<divalign='center'>❌</div>} | _{<divalign='center'>❌</div>} | _{<divalign='center'>❌</div>} | _{<divalign='center'>❌</div>} | _{<divalign='center'>❌</div>} | _{<divalign='center'>❌</div>}

_{[1239 - Maximum Length of a Concatenated String With Unique Characters](https://leetcode.com/problems/maximum-length-of-a-concatenated-string-with-unique-characters/)} | _{<divalign='center'>❌</div>} | _{<divalign='center'>❌</div>} | _{<divalign='center'>❌</div>} | _{<divalign='center'>❌</div>} | _{<divalign='center'>❌</div>} | _{<divalign='center'>❌</div>} | _{<divalign='center'>❌</div>} | _{<divalign='center'>[✔️](python%2F1239-Maximum-Length-of-a-Concatenated-String-with-Unique-Characters.py)</div>} | _{<divalign='center'>❌</div>} | _{<divalign='center'>❌</div>} | _{<divalign='center'>❌</div>} | _{<divalign='center'>❌</div>} | _{<divalign='center'>❌</div>}

_{[698 - Partition to K Equal Sum Subsets](https://leetcode.com/problems/partition-to-k-equal-sum-subsets/)} | _{<divalign='center'>❌</div>} | _{<divalign='center'>❌</div>} | _{<divalign='center'>❌</div>} | _{<divalign='center'>❌</div>} | _{<divalign='center'>❌</div>} | _{<divalign='center'>❌</div>} | _{<divalign='center'>❌</div>} | _{<divalign='center'>❌</div>} | _{<divalign='center'>❌</div>} | _{<divalign='center'>❌</div>} | _{<divalign='center'>❌</div>} | _{<divalign='center'>❌</div>} | _{<divalign='center'>❌</div>}

_{[51 - N Queens](https://leetcode.com/problems/n-queens/)} | _{<divalign='center'>❌</div>} | _{<divalign='center'>[✔️](cpp%2F51-N-Queens.cpp)</div>} | _{<divalign='center'>[✔️](csharp%2F51-N-Queens.cs)</div>} | _{<divalign='center'>[✔️](go%2F51-N-Queens.go)</div>} | _{<divalign='center'>[✔️](java%2F51-N-Queens.java)</div>} | _{<divalign='center'>[✔️](javascript%2F51-solveNQueens.js)</div>} | _{<divalign='center'>❌</div>} | _{<divalign='center'>[✔️](python%2F51-N-Queens.py)</div>} | _{<divalign='center'>❌</div>} | _{<divalign='center'>❌</div>} | _{<divalign='center'>❌</div>} | _{<divalign='center'>❌</div>} | _{<divalign='center'>[✔️](typescript%2F518-Coin-Change-II.ts)</div>}

_{[52 - N Queens II](https://leetcode.com/problems/n-queens-ii/)} | _{<divalign='center'>❌</div>} | _{<divalign='center'>❌</div>} | _{<divalign='center'>❌</div>} | _{<divalign='center'>❌</div>} | _{<divalign='center'>❌</div>} | _{<divalign='center'>[✔️](javascript%2F52-totalNQueens.js)</div>} | _{<divalign='center'>❌</div>} | _{<divalign='center'>❌</div>} | _{<divalign='center'>❌</div>} | _{<divalign='center'>❌</div>} | _{<divalign='center'>❌</div>} | _{<divalign='center'>❌</div>} | _{<divalign='center'>❌</div>}

_{[52 - N Queens II](https://leetcode.com/problems/n-queens-ii/)} | _{<divalign='center'>❌</div>} | _{<divalign='center'>❌</div>} | _{<divalign='center'>❌</div>} | _{<divalign='center'>❌</div>} | _{<divalign='center'>[✔️](java%2F523-Continuous-Subarray-Sum.java)</div>} | _{<divalign='center'>[✔️](javascript%2F52-totalNQueens.js)</div>} | _{<divalign='center'>❌</div>} | _{<divalign='center'>[✔️](python%2F523-Continuous-Subarray-Sum.py)</div>} | _{<divalign='center'>❌</div>} | _{<divalign='center'>❌</div>} | _{<divalign='center'>❌</div>} | _{<divalign='center'>❌</div>} | _{<divalign='center'>❌</div>}