Very creative usage of blkdiag in collaboration with conv2. I prefer nnz over "any" for speed and compactness.
Find the sum of all the numbers of the input vector
Specific Element Count
Back to basics 21 - Matrix replicating
Back to basics 23 - Triangular matrix
String substitution, sub problem to cryptoMath
Create an 8-color version of an image
Change a specific color in an image
Determine which fields have been modified in a structure
Numeric array to cell array of strings (easy)
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