Return a cell array containing the filenames for built-in images (e.g. cameraman.tif, coins.png). An optional input specifies what type(s) of files to look for. If no such files exist, return an empty cell array.
EDIT: The output should be sorted in alphabetical order.
Mysterious order for me.
Why tif>png>jpg if you give an input list in another order ?
The order should not matter. I sort the lists before checking if they are equal.
After giving it some thought, I have decided to force users to sort their output in alphabetical order.
In 23 size, humm intriguing ...