Covering some basic topics I haven't seen elsewhere on Cody.
Given an input matrix and row and column, output the index of the referenced element.
matrix: [10 12 22; 9 3 5]
-> index = 6
Replace May with April
Set some matrix elements to zero
Colon operator of two vectors
Swap two numbers
Back to basics 20 - singleton dimensions
Back to basics 15 - Benchmark
Back to basics 25 - Valid variable names
Back to basics 26 - Keywords
Back to basics 24 - Symbolic variables
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