Top Left and bottom Right

For Top left the indexs are from i=0 to n-1 and j=0 to n-1
For Bottom Right the Indexs are from i=i to n-1 and j=j to n-1 (or) i=i+1 to n-1 and j=j+1 to n-1?

i+1 j+1 as i is already being covered in the top indexes