Two Sum II in O(n) Using Two Pointers | NeetCode 150

This video explains Two Sum II — Input Array Is Sorted using the two-pointer technique in O(n) time. Because the input array is sorted, we can place one pointer at the beginning and one at the end. If their sum is too small, we move the left pointer forward. If the sum is too large, we move the right pointer backward. I’m working through the NeetCode 150 as an average CS student and explaining each problem while learning the patterns behind the solution. Problem: Two Sum II — Input Array Is Sorted LeetCode: 167 Pattern: Two Pointers Time complexity: O(n) Watch the complete NeetCode 150 From Scratch playlist on my channel. #leetcode #neetcode150 #twopointers