#include"stdafx.h"
#include<iostream>
#include<stdio.h>
usingnamespace std;
int_tmain(intargc, _TCHAR* argv[])
{
int a[10],i,j,max;
char l;
l = 'k';
for (i = 0; i <= 9; i++)
{
a[i] = 0;
}
while (l!='.')
{
cin>>l ;
a[l-48]++;
}
max = a[0];
for (i = 1; i<=9; i++)
{
if (a[i]>max)
{
max = a[i];
}
}
for (i = 1; i<= max; i++)
{
for (j = 0; j <= 9; j++)
{
if (a[j] == i)
{
cout << j;
}
}
}
return 0;
}
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