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
Convert a vector into a number
Vectorize the digits of an Integer
Replace Vector Elements
02 - Vector Variables 2
Returning a "greater than" vector
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