LeetCode: 392. Is Subsequence

 

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 distu

class Solution {

    public boolean isSubsequence(String s, String t) {

        if (s.length() ==0) return true;

        int spoint = 0;

        int tpoint = 0;

        while (tpoint < t.length()) {

            if (t.charAt(tpoint) == s.charAt(spoint)) {

                spoint++;

           

                if (spoint == s.length()) return true;

            }

            tpoint++;

           

        }

 return false;

    }

}