JXNUACM1015构建矩阵

#include<iostream>using namespace std;int main(){int n,i;cin>>n;for(i=0;i<n;i++){int a;cin>>a;for(int j=1;j<=a;j++)    for(int k=1;k<=a;k++){if (k==1)   cout<<j*k;else       cout<<" "<<j*k;   if (k==a)   cout<<endl;}}return 0;}