Journal Archive

2022

/**
 * @param {string} s
 * @param {string} t
 * @return {boolean}
 */
var isSubsequence = function(s, t) {
    let pointer1 = 0;
    let pointer2 = 0;
    while (pointer1 < s.length && pointer2 < t.length) {
        if( s[pointer1] === t[pointer2]) {
            pointer1++;
            pointer2++;
        } else {
            pointer2++;
        }
    }
    return s.length === pointer1;
    
};

Day 60: Solving one of LeetCode problems

392. Is Subsequence Difficulty - Easy

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 1:

Input: s = "abc", t = "ahbgdc"
Output: true

Example 2:

Input: s = "axc", t = "ahbgdc"
Output: false