【leetcode每日刷题】392. Is Subsequence

https://leetcode.com/problems/is-subsequence/

index记录t中已经遍历的位置。

class Solution {
    public boolean isSubsequence(String s, String t) {
        int index = -1;
        for(char c:s.toCharArray()){
            index = t.indexOf(c, index+1);
            if(index == -1) return false;
        }
        return true;
    }
}