C++ 解法, 执行用时: 2ms, 内存消耗: 308KB, 提交时间: 2022-03-13

#include<bits/stdc++.h>
using namespace std;
// write your code here......
void strback(string &s) {
    int len = s.length();
  for (int i = 0; i < len/2; i++) {
      char temp = s[len - i - 1];
      s[len - i - 1] = s[i];
      s[i] = temp;
    
}

}

int main(){
    string s;
    getline(cin,s);
    // write your code here......
    strback(s);
    cout<<s;
    return 0;
}

C++ 解法, 执行用时: 2ms, 内存消耗: 456KB, 提交时间: 2022-03-13

#include<bits/stdc++.h>
using namespace std;

void flip(string &s){
    int b = s.length();
    for(int i = 0;i<b/2;i++){
        char a = s[i];
        s[i] = s[b - i -1];
        s[b - i - 1] = a;
    }
}

int main(){
    string s;
    getline(cin,s);
    // write your code here......
    flip(s);
    cout<<s;
    return 0;
}

C++ 解法, 执行用时: 3ms, 内存消耗: 392KB, 提交时间: 2022-08-05

#include<bits/stdc++.h>
using namespace std;
// write your code here......
void turnStr(string& s)
{
    for(int i = 0; i < s.size() / 2; i++)
    {
        size_t size = s.size();
        char temp = s[i];
        s[i] = s[size - i - 1];
        s[size - i - 1] = temp;
    }
}

int main(){
    string s;
    getline(cin,s);
    // write your code here......
    turnStr(s);
    cout<<s;
    return 0;
}

C++ 解法, 执行用时: 3ms, 内存消耗: 392KB, 提交时间: 2022-06-03

#include<bits/stdc++.h>
using namespace std;
// write your code here......

void swap(string& s){
    char temp;
    for (int i=0,n=s.length();i<(n/2);i++){
        temp=s[i];
        s[i]=s[n-i-1];
        s[n-i-1]=temp;
    }
    return;
}

int main(){
    string s;
    getline(cin,s);
    // write your code here......
    swap(s);
    cout<<s;
    return 0;
}

C++ 解法, 执行用时: 3ms, 内存消耗: 392KB, 提交时间: 2022-05-03

#include<bits/stdc++.h>
using namespace std;
#include <string>
// write your code here......
void myreverse(string &a)
{
    for(int i=0;i<a.length()/2;i++)
    {
        char t=a[a.length()-i-1];
        a[a.length()-i-1]=a[i];
        a[i]=t;
    }
}
int main(){
    string s;
    getline(cin,s);
    // write your code here......
    myreverse(s);
    cout<<s;
    return 0;
}