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.
Finding Perfect Squares
Number of Circles in a Number
Back to basics 3 - Temp Directory
Replace Vector Elements
Pentago: find winning move
Triangular matrices in 3D array
Determine which fields have been modified in a structure
Create an 8-color version of an image
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