# Leetcode 392 - Is subsequence

Note

• DP
• It’s just find the longest common subsequence. And if its length === s.length, it means true!
• Doule pointer

Given two strings s and t, return true if s is a subsequence of t, or false otherwise.

A subsequence of a string is a new string that is formed from the original string by deleting some (can be none) of the characters without disturbing the relative positions of the remaining characters. (i.e., “ace” is a subsequence of “abcde” while “aec” is not).

Example

DP

Double Pointers