AlgoCademy

Easy

• 136 Single Number
• 344 Reverse String
• 20 Valid Parentheses
• 118 Pascal's Triangle
• 217 Contains Duplicate
• 2206 Divide Array Into Equal Pairs
• 977 Squares of a Sorted Array
• 905 Sort Array By Parity
• 1351 Count Negative Numbers in a Sorted Matrix

Medium

• 73 Set Matrix Zero