Convert the input to a cell array, but only if necessary.
If the input is a string, return a 1-by-1 cell array containing the string. If the input is a cell array of strings, return the input unaltered.
Remove the air bubbles
random picture with random colours
The sum of the numbers in the vector
Sum of the Matrix Elements
Connect Four: find winning move
Concatenate string with cell array of strings
Find the nearest prime number
List of built-in demo images
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