小黑代码 class Solution:def checkInclusion(self, s1: str, s2: str) -> bool:# s1与s2的长度n_s1 = len(s1)n_s2 = len(s2)# 非法情况if n_s1 > n_s2:return False# 初始化差值向量count = [0] * 26# 判断初始状态是否成立for i in range(n_s1)