Additional test cases have been added.
liuliu:you "regexp" everything,everywhere? LOL
Return the 3n+1 sequence for n
Back to basics 25 - Valid variable names
Calculate the Number of Sign Changes in a Row Vector (No Element Is Zero)
Matrix to column conversion
Hard limit function
Determine if input is a perfect number
Seperate array to small section according to its index position
Return fibonacci sequence do not use loop and condition
Return fibonacci sequence do not use loop and condition version 2
Big Integer Sqrt
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