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#!/usr/bin/ruby
#
# See ../README.md
#
#
# Run as: ruby ch-2.rb < input-file
#
#
# Working from the end of the required string backwards, we alternate
# placing a hash, and placing a number. We place them in an array @out,
# and at the end, print out said array in reverse order.
#
ARGF . each_line do |_|
index = _ . to_i
out = Array . new
hash = false
while index > 0 do
if hash = !hash
out . push ("#")
index -= 1
else
out . push ((index + 1) . to_s)
index -= (index + 1) . to_s . length
end
end
puts (out . reverse . join)
end
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