297.字符串轮转

class Solution {
    public boolean isFlipedString(String s1, String s2) {
        if(s1.length()!=s2.length()){
            return false;
        }
        s1=s1+s1;
        return s1.contains(s2);
    }
}

class Solution(object):
    def isFlipedString(self, s1, s2):
        if len(s1)!=len(s2):
            return False
        s1=s1*2
        return s2 in s1