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 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

def isSubsequence(self, s: str, t: str) -> bool:
	if s == '':
		return True
	ind = 0
	maxlen = len(s)
	for i in range(len(t)):
		if t[i] == s[ind]:
			ind +=1
			if ind == maxlen:
				return True 
	return False