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
radius of a spherical planet
Find the sum of the elements in the "second" diagonal
Rotate a Matrix
Add two numbers
02 - Vector Variables 5
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