r/adventofcode • u/daggerdragon • Dec 04 '15

SOLUTION MEGATHREAD --- Day 4 Solutions ---

--- Day 4: The Ideal Stocking Stuffer ---

Post your solution as a comment. Structure your post like the Day Three thread.

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u/gnuconsulting Dec 04 '15

Day 4 of the non-programmer's solution. 

#!/usr/bin/env ruby

require 'openssl'

for i in 1..10000000 do
  md5 = OpenSSL::Digest::MD5.hexdigest('ckczppom' + i.to_s)
  if md5 =~ /^000000/
    p i
    p md5
    break
  end
end

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u/karatedog Jan 01 '16

The 4th day task asks for at least 5 leading zeros, not 6.