Note: This kata is inspired by Convert a Number to a String!. Try that one too.
We need a function that can transform a string into a number. What ways of achieving this do you know?
Note: Don't worry, all inputs will be strings, and every string is a perfectly valid representation of an integral number.
"1234" --> 1234
"605" --> 605
"1405" --> 1405
"-7" --> -7
def string_to_number(s)
s.to_i
end