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 values occur exactly three times?
Is the input divisible by 3?
Concatenate two strings
Back to basics 18 - justification
Back to basics 14 - Keywords
Back to basics 2 - Function Path
Back to basics 12 - Input Arguments
Back to basics 25 - Valid variable names
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