Convert the input to a cell array, but only if necessary.
If the input is a numeric array, return a 1-by-1 cell array containing the input. If the input is a cell array of numeric arrays, return the input unaltered.
Find relatively common elements in matrix rows
Triangle Numbers Below N
Sum the numbers on the main diagonal
Compute LOG(1+X) in natural log
Change a specific color in an image
Pentago: find winning move
Check if vertices form a rectangle
Calculate the Hamming distance between two strings
Create cell array of strings
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