class Solution {
public:
    /**
     * 旋转字符串
     * @param A string字符串 
     * @param B string字符串 
     * @return bool布尔型
     */
    bool solve(string A, string B) {
        // write code here
        if(A.size() != B.size())
            return false;
        int l = 0;
        int f = 0;
        for(; f < A.size(); f++) {
            if(A[f] == B[0])
                break;
        }
        for(; l < f; l++) {
            if(A[l] == B[f + l])
                continue;
            else
                return false;
        }
        if(l == f)
            return true;
        else
            return false;
    }
};