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.
Remove white space from the string
Volume of a sphere given its surface area
Narcissistic number ?
Create an 8-color version of an image
Detect circles in images
List of built-in demo images
Assign matrix elements to separate variables
Create cell array of strings
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