binary

gistfile1.rb

#!/usr/bin/env ruby

def getBinary(dec)
    quot = 0
    binaryrep = []

    #do the first one manually to populate q
    quotmod = dec.divmod(2) # [69,0]
    q = quotmod[0]
    binaryrep.push(quotmod[1])

while q != 0
    quotmod = q.divmod(2)
    q = quotmod[0]
    binaryrep.push(quotmod[1])
end
puts binaryrep.reverse.join
end

#get input i.e. $...binary.rb 10
getBinary ARGV[0].to_i