Description

Submission

class Solution {
public:
    bool isSubsequence(string s, string t) {
        int i = 0, j = 0;

        for(; i < s.length() && j < t.length(); ++j) {
            if(s[i] == t[j]) {
                ++i;
            } 
        }

        return i == s.length();
    }
};