Is subsequence

class Solution:
    def isSubsequence(self, s: str, t: str) -> bool:

        i = 0
        j = 0

        while (i < len(s) and j < len(t)):
            if s[i] == t[j]:
                i += 1
            j += 1

        return i == len(s)

        # if j == len(t) and not i == len(s):
        #     return False
        # elif i == len(s) and not j == len(t):
        #     return True
        # elif i == len(s) and j == len(t):
        #     return True