Ruby Quiz #154

ruby_quiz_154.rb

#!/usr/bin/env ruby
coins = {
  :penny   => { :value => 0.01, :count => 0 },
  :nickel  => { :value => 0.05, :count => 0 },
  :dime    => { :value => 0.1, :count => 0 },
  :quarter => { :value => 0.25, :count => 0 }
}

amount = ARGV[0].to_f.round(2)

coins.sort_by { |k,v| v[:value] }.reverse.each do |coin, value|
  coins[coin][:count] = (amount/value[:value]).to_i
  amount = (amount - (value[:value] * value[:count])).to_f.round(2)
end

puts coins

#╭─gaahrdner@nipsey  /tmp ‹1.9.3-p327›
#╰─$ ./ruby_quiz_154.rb 1.45
#{:penny=>{:value=>0.01, :count=>0}, :nickel=>{:value=>0.05, :count=>0}, :dime=>{:value=>0.1, :count=>2}, :quarter=>{:value=>0.25, :count=>5}}

rounding :-/