Problems No. Problem 2 Add Two Numbers 7 Reverse Integer 8 String to Integer (atoi) 11 Container With Most Water 19 Remove nth Node From the End 34 First and Last Position of Element in an Array 36 Valid Sudoku 48 Rotate Image 55 Jump Game 61 Rotate List 62 Unique Paths 63 Unique Paths II 98 Valid BST 142 LinkedList Cycle II 146 LRU Cache 153 Find Minimum in Rotated Sorted Array 179 Largest Number 200 Number of Islands 287 Find Duplicate Number 316 Remove Duplicate Letters 429 N-ary Tree Level Order Traversal 560 Subarray Sum Equals K 725 Split List in Parts 814 Binary Tree Pruning 853 Car Fleet 967 Numbers With Same Consecutive Differences 974 Subarray Sums Divisible by K 1048 Longest String Chain 1081 Smallest SubSequence of Distinct Characters 1448 Count Good Nodes in Binary Tree 1584 Min Cost to Connect All Dots 1631 Path With Minimum Effort 1647 Min Deletions to Make Char Frequencies Unique 1658 Minimum Operations to Reduce X to Zero 1996 The Number of Weak Characters in the Game 2038 Remove Colored Pieces if 2707 Extra Chars in a String