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Day 4: Is Subsequence

Leetcode 75-day challenge

Day 1: Search in a Binary Search Tree

Day 2: Delete Node in a Binary Search Tree

Day 3: Move Zeroes

So, the problem I chose to start for the third day is: Is Subsequence

Before I start explaining the solution to this problem, I assume that the reader of this blog has a basic understanding of how the two-pointer approach works. If not, you can watch a YouTube video on the topic here: