非常简单的思路：将两个字符串s1接起来，并判断s2字符串是否是加长版s1字符串的子串

bool isFlipedString(char* s1, char* s2){if (strlen(s1) != strlen(s2)) {return false;}int len = strlen(s1);int i = 0;char* arr = (char*)malloc(sizeof(char) * len * 2 + 1);for (; i < 2 * len; i++) {arr[i] = s1[i % len];//printf("%c ", arr[i]);}arr[i] =  '\0';if (strstr(arr, s2) != NULL){return true;}return false;
}