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.
Return the 3n+1 sequence for n
Word Counting and Indexing
Remove the air bubbles
Swap two numbers
Reverse a matrix
Check if vertices form a rectangle
Number of active Cody players by date
The Python Challenge, Level 1: Decode strings
Find mistyped words in text (mixed-up letters)
Return elapsed time
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