题解 | #字符串反转#
字符串反转
http://www.nowcoder.com/practice/e45e078701ab4e4cb49393ae30f1bb04
#include<iostream>
#include<string>
using namespace std;
int main()
{
string s1;
cin>>s1;
char *l,*r;
l=&s1[0],r=&s1[s1.size()-1];
while(l<r)//使用指针实现字符串的就地逆置
{
char temp=*l;
*l=*r;
*r=temp;
l++;
r--;
}
cout<<s1<<endl;
return 0;
} 