快读

inline int read(){
   int s=0,w=1;
   char ch=getchar();
   while(ch<'0'||ch>'9'){if(ch=='-')w=-1;ch=getchar();}
   while(ch>='0'&&ch<='9') s=s*10+ch-'0',ch=getchar();
   return s*w;
}

#include <iostream>
#include <algorithm>
using namespace std;
int T;
int arr[1000007];

inline int read(){
   int s=0,w=1;
   char ch=getchar();
   while(ch<'0'||ch>'9'){if(ch=='-')w=-1;ch=getchar();}
   while(ch>='0'&&ch<='9') s=s*10+ch-'0',ch=getchar();
   return s*w;
}

int main(){
    cin>>T;
    while(T--){
        int n;cin>>n;
        for(int i = 0;i<n;i++){
           arr[i] = read();
        }
        sort(arr,arr+n);
        for(int i = 0;i<n;i++){
            printf("%d",arr[i]);
            if(i<n-1) printf(" ");
        }
        puts("");
    }
    
    
    return 0;
}