题解 | #旋转字符串#

int len = A.length();
        boolean flag =false; //标识符，是否找到了，没找到继续找
        for (int i = 0; i < len; i++) {
            String substring1 = A.substring(0, i);//前半段
            String substring2 = A.substring(i);//后半段
            StringBuffer buffer = new StringBuffer(substring2);
            buffer.append(substring1);
            if(buffer.toString().equals(B)) {
                flag = true;
                break;
            }

        }
        if(flag ){
            return true;
        }else{
            return false;
        }