题解 | #图片整理#

#include<iostream>
#include<string>
#include<cmath>
using namespace std;

int main() 
{
    string s;
    cin >> s;
    for (int i = 0; i < s.size() - 1; i++)
    {
        for (int j = 0; j < s.size() - 1 - i; j++)
        {
            char temp;
            if (s[j] >= s[j + 1])
            {
                temp = s[j];
                s[j] = s[j + 1];
                s[j + 1] = temp;
            }
        }
    }
    cout << s << endl;
    return 0;
}