|301|[Remove Invalid Parentheses](https://leetcode.com/problems/remove-invalid-parentheses/)|[Solution]| ? | ? | Hard| BFS

|292|[Nim Game](https://leetcode.com/problems/nim-game/)|[Solution](../../blob/master/EASY/src/easy/NimGame.java)| O(1)|O(1) | Easy|

|283|[Move Zeroes](https://leetcode.com/problems/move-zeroes/)|[Solution](../../blob/master/EASY/src/easy/MoveZeroes.java)| O(n)|O(1) | Easy|

|278|[First Bad Version](https://leetcode.com/problems/first-bad-version/)|[Solution](../../blob/master/EASY/src/easy/FirstBadVersion.java)| O(logn)|O(1) | Easy| Binary Search

|273|[Integer to English Words](https://leetcode.com/problems/integer-to-english-words/)|[Solution]|

|257|[Binary Tree Paths](https://leetcode.com/problems/binary-tree-paths/)|[Solution](../../blob/master/EASY/src/easy/BinaryTreePaths.java) | O(n*h) | O(h) | DFS/Recursion