Search⌘ K
AI Features

Solution: Is Subsequence

Explore how to use the two pointers approach to solve the subsequence problem. Learn to check if string s is a subsequence of string t by scanning characters efficiently. This lesson helps you understand the method and computational complexity, preparing you to apply this pattern in coding interviews.

Statement

Given two strings s and t, determine whether s is a subsequence of t. Return TRUE if it is, or FALSE otherwise.

A subsequence of a string is a new string formed by deleting zero or more characters from the original string, without changing the relative order of the remaining characters. For example, "ace" is a subsequence of "abcde", whereas "aec" is not.

Constraints:

  • ...