Refactoring for delimiter
Refactoring, added string for newline and commas
Test for different delimiter
Refactoring for new delimiter
Negatives numbers
Refactoring for negative numbers
Many negative numbers
Refactoring for multiple negative numbers
More refactoring for negatives
Numbers bigger then 1000
Refactoring for bigger numbers
Delimiters of any lenght
Different delimiters
Refactoring
Multiple and of length delimiters