#includeiostream #includestring #includevector using namespace std; int main(){ string str hello world; reverse(str.begin(), str.end()); //反转整个字符串 reverse(str.begin(), str.begin() 3); // 反转字符串[0,3) vectorint vec {3, 2, 1}; reverse(vec.begin(), vec.end()); // 反转vector return 0; }