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!
Select every other element of a vector
Which values occur exactly three times?
Convert a vector into a number
convert matrix to single column
Matlab Basics II - Log and natural log
Approximate the cosine function
Sum of adjacent elements in a vector
How many Integers?
How many unique Pythagorean triples?
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