Title: 20. Valid Parentheses Url: leetcode Time complexity: O(n^2) 😐😐

#subarray Title: 53. Maximum Subarray leetcode (solution is from video, not by me yet)

#array Title: 34. Find First and Last Position of Element in Sorted Array URL: https://leetcode.com/problems/find-first-and-last-position-of-element-in-sorted-array/ Level: Medium Big O: O(N) version 1

Two Sum #Leetcode 🔗Link

Title: 128. Longest Consecutive Sequence URL: https://leetcode.com/problems/longest-consecutive-sequence/description/ Level: Medium Big O: O(N) version 1