Square a number
I would recommend more test cases, including some of matrices.
This user (ALBERT ALEXANDER STONIER) appears to have gamed the system, with fraudulent "likes" of this unremarkable solution submitted by 'sock-puppet' accounts. —DIV
Remove the vowels
Back to basics 12 - Input Arguments
Sum of diagonal of a square matrix
Replicate elements in vectors
Matlab Basics - Switching Assignments
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