Additional test cases have been added.
nice internal reference to the match.
a simple improvement could be to parse "s" as input and write "lower($0(2:..." in the replacement string.
two steps in one op, nicely done!
Get the length of a given vector
Test if two numbers have the same digits
07 - Common functions and indexing 6
Dimensions of a rectangle
Remove the first, third and fifth rows of a matrix
Find the largest number
Approximate the cosine function
Remove the air bubbles from a vector
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