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Methods to Convert Integer to Whitespace format in Python

The problem

Hereinafter, [space] refers to " "[tab] refers to "t", and [LF] refers to "n" for illustrative functions. This doesn’t imply that you should use these placeholders in your answer.

In esoteric language referred to as Whitespace, numbers are represented within the following format:

  • first character represents the signal: [space] for plus, [tab] for minus;
  • characters after that and till [LF] are the binary illustration of the integer: [space] for 0, [tab] for 1.
  • characters after which might be the binary illustration of absolutely the worth of the quantity, with [space] for 0, [tab] for 1, the rightmost bit is the least significand bit, and no main zero bits.
  • the binary illustration is straight away adopted by [LF].


  • Legitimate Whitespace quantity should at all times have no less than two characters: an indication and the terminator. In case there are solely two characters, the quantity is the same as zero.
  • For the needs of this problem, zero should at all times be represented as [space][LF].
  • In Whitespace, solely area, tabulation and linefeed are significant characters. All different characters are ignored. Nonetheless, for the needs of this easy problem, please don’t add another characters within the output.
  • On this problem, enter will at all times be a sound unfavourable or optimistic integer.
  • In your comfort, on this problem we’ll use unbleach() perform when evaluating your outcomes. This perform replaces whitespace characters with [space][tab], and [LF] to make fail messages extra apparent. You’ll be able to see the way it works in Instance Take a look at Instances.


  • 1 in Whitespace is " tn".
  • “ in Whitespace is " n".
  • -1 in Whitespace is "ttn".
  • 2 in Whitespace is " t n".
  • -3 in Whitespace is "tttn".

The answer in Python code

Possibility 1:

from string import maketrans

def whitespace_number(n):
    return (' n' if n == 0 else
        '{:+b}n'.format(n).translate(maketrans('+-01', ' t t')))

Possibility 2:

def whitespace_number(n):
    signal = ' t'[n < 0]
    quantity = bin(abs(n))[2:].exchange('0', ' ').exchange('1', 't') if n else ''
    return signal + quantity + 'n'

Possibility 3:

whitespace_number=lambda n:f"{n:+b}n".translate(str.maketrans("+-01"," t"*2))[n==0:]

Take a look at circumstances to validate our answer

def unbleach(ws):
    return' ', '[space]').exchange('t', '[tab]').exchange('n', '[LF]')

take a look at.assert_equals(unbleach(whitespace_number( 1)), unbleach(   " tn"))
take a look at.assert_equals(unbleach(whitespace_number( 0)), unbleach(     " n"))
take a look at.assert_equals(unbleach(whitespace_number(-1)), unbleach(  "ttn"))
take a look at.assert_equals(unbleach(whitespace_number( 2)), unbleach(  " t n"))
take a look at.assert_equals(unbleach(whitespace_number(-3)), unbleach("tttn"))

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