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Rahul Kumar Barnwal @rahulgithub-web

Is Subsequence Problem: Two Pointer Technique Vs Preprocessing

Two-pointer technique solves LeetCode 392: Is Subsequence in O(n+m) time, traversing strings s and t to check if s is a subsequence of t.

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The Is Subsequence problem is a great challenge that involves iterating through strings to determine if one is a subsequence of the other. Let’s break down LeetCode 392: Is Subsequence and explore both standard and optimized solutions.


  
  
  🚀 Problem Description

Given two strings s and t:

Return true if s is a subsequence of t.
A subsequence of a string is formed by deleting some characters (or none) from the original string without changing the relative order of the remaining characters.



  
  
  💡 Examples

Example 1

Input: s = "abc", t = "ahbgdc"  
Output: true...