Given n, you should return an n-by-n unit matrix.
Example:
If input is n=2 then
A = [ 1 0
0 1 ]If input is n=4 then
A = [ 1 0 0 0
0 1 0 0
0 0 1 0
0 0 0 1 ]
This user (ALBERT ALEXANDER STONIER) appears to have gamed the system, with fraudulent "likes" of this unremarkable solution submitted by 'sock-puppet' accounts. —DIV
improve test suite
1110 Solvers
213 Solvers
395 Solvers
Who has power to do everything in this world?
245 Solvers
1076 Solvers
Solution 1817260
You need multiple tests to check a variety of situations.