Additional test cases have been added.
liuliu:you "regexp" everything,everywhere? LOL
The Goldbach Conjecture
Sum all integers from 1 to 2^n
Is it a number?
Number of digits in an integer
Successive zeros (harder)
Return fibonacci sequence do not use loop and condition version 3
Big Integer Sqrt
Solve Sudoku puzzle step by
Determine if input is a perfect number
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