suprisingly, this code doesn't work in previous versions of MATLAB. Looks like things under the mask of regexprep changed. Previous policy was [match1][match2]...[matchN][replace1][replace2]...[replaceN] while now it's more like [match1][replace1]...[matchN][replaceN]
This code works in previous versions of MATLAB, but not in current one. See comment 6791.
Summing Digits within Text
count any radix?
Permute diagonal and antidiagonal
Magic is simple (for beginners)
Distance walked 2D
How many palindromes?
Multiply a column by a row
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