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
Back to basics 22 - Rotate a matrix
642 Solvers
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07 - Common functions and indexing 2
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142 Solvers
Sum of the Multiplication of Vectors
143 Solvers
Solution 1817260
You need multiple tests to check a variety of situations.