Task: Given a N*N matrix, print the values of matrix in anti diagonal way. Example: Input: 1 1 2 3 4 5 6 7 8 9 Output: 1 2 4 5 6 7 6 8 9 // 1-2,4-3,5,7-6,8-9. Here is the Code: Program in C++: #include<iostream> using namespace std; int main() { int t; cin>>t; while(t--) { int n; cin>>n; int a[n][n]; for(int i=0;i<n;i++) { for(int j=0;j<n;j++) { cin>>a[i][j]; } } int i,k; for(int j=0;j<n;j++) { i=0,k=j; while(k>=0) { cout<<a[i++][k--]<<" "; } } int j; for(i=1;i<n;i++) { j=n-1,k=i; while(k<n) { cout<<a[k++][j--]<<" "; } } cout<<endl; } return 0; } Here is the Video: