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.
Better bullseye matrix
Flag largest magnitude swings as they occur
Solving Quadratic Equations (Version 1)
Sum the squares of numbers from 1 to n
How many figures currently exist?
The Python Challenge, Level 1: Decode strings
List of built-in demo images
Create cell array of numeric arrays
Triangular matrices in 3D array
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