找规律，距离边界距离的最小值

C++ 代码

#include<bits/stdc++.h>
using namespace std;
int main(){
    int n;
    while(cin>>n){
        if(n==0)break;
        for(int i=1;i<=n;i++){
            for(int j=1;j<=n;j++)
                cout<<min(min(i,n-i+1),min(j,n-j+1))<<" ";
            cout<<endl;
        }
        cout<<endl;
    }
}