fake_binary.md

Fake Binary

Description

Given a string of digits, you should replace any digit below 5 with '0' and any digit 5 and above with '1'. Return the resulting string.

Note: input will never be an empty string

My Solution

def fake_bin(s)
  s.tr('01234', '0').tr('56789', '1')
end

Better/Alternative solution from Codewars

def fake_bin(s)
  s.tr('1-9', '00001')
end