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Is Subsequence - Two Pointer - Leetcode 392 Python

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🔴 Question with Example
Given a string s and a string t, check if s is a subsequence of t.
A subsequence of a string is a new string which is formed from the original string by deleting some (can be none) of the characters without disturbing the relative positions of the remaining characters. (ie, "ace" is a subsequence of "abcde" while "aec" is not).