Covering some basic topics I haven't seen elsewhere on Cody.
Given an input vector of numbers, output a square array with the vector as the main diagonal and all other elements = 0.
1 0 0 0
0 2 0 0
0 0 3 0
0 0 0 4
Which doors are open?
Triangle Numbers Below N
Find the 9's Complement
Matlab Basics II - Intervals
Better bullseye matrix
Back to basics 21 - Matrix replicating
Back to basics 19 - character types
Bottles of beer
Convert Roman to Arabic Numerals
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