- 1 : Two Sum
- 2 : Add Two Numbers
- 13 : Roman to Integer
- 14 : Longest Common Prefix
- 17 : Letter Combination of a Phone Number
- 20 : Valid Parentheses
- 21 : Merge Two Sorted Lists
- 34 : Find First and Last Position of Element in Sorted Array
- 35 : Search Insert Position
- 38 : Multiply Strings
- 49 : Group Anagrams
- 50 : Pow(x,n)
- 58 : Length of Last Word
- 66 : Plus One
- 69 : Sqrt(x)
- 70 : Climbing Stairs
- 125 : Valid Palindrome
- 151: Reverse Word in a String
- 206 : Reverse Linked List
- 226 : Invert Binary Tree
- 367 : Valid Perfect Square
- 523 : Continuous Subarray Sum
- 733 : Flood Fill
- 835 : Image Overlap
- 1480 : Running Sum of 1d Array
- 1662 : Check If Two String Arrays are Equivalent