c++键盘输入，排序，列表输出

Question

Answer 1

#include <iostream>
using namespace std;
int main()
{
    int n,i,j,t;
    int a[50];
    int cnt = 0;
    cin >> n;
    for(i=0;i<n;i++)
        cin >> a[i];
    //排序
    for (i=0;i<n-1;i++)
    {
        for(j=0;j<n-1-i;j++)
        {
            if(a[j] < a[j+1])
            {
                t= a[j];
                a[j] = a[j+1];
                a[j+1]=t;
            }
        }
    }

    cnt = 1;
    for (i=1;i<n;i++)
    {
        if(a[i] != a[i-1])
        {
            cout << a[i-1] << " " << cnt << endl;
            cnt = 1;
        }
        else
            cnt++;
    }
    cout << a[n-1] <<" " << cnt << endl;
    return 0;
}