xpp

erase():erase函数的原型如下：（1）string& erase ( size_t pos = 0, size_t n = npos );（2）iterator erase ( iterator position );（3）iterator erase ( iterator first, ... Read More

Given a string, determine if it is a palindrome, considering only alphanumeric characters and ignoring cases.//数字或字母For example,"A man, a plan, a cana... Read More