Given n, you should return an n-by-n unit matrix.
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 ]
You need multiple tests to check a variety of situations.
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
Make one big string out of two smaller strings
2 b | ~ 2 b
Is A the inverse of B?
Find the biggest empty box
02 - Vector Variables 2
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