1086. 重复字符串匹配

class Solution:
    """
    @param A: a string
    @param B: a string
    @return: return an integer
    """
    def repeatedStringMatch(self,A,B):
        counts = len(B)//len(A)+2
        res = A
        count = 1
        for index in range(counts):
            if B in res:
                return count
            res += A
            count += 1
        return -1