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
Determine if a Given Number is a Triangle Number
Reverse the Words (not letters) of a String
Back to basics 21 - Matrix replicating
Do Fast Fourier Transformation
Find out sum of all elements of given Matrix
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