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just806me/test.rb

Last active May 29, 2019 13:12
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test.rb
LETTER_REGEX = /^[[:alpha:]]$/u.freeze
line = STDIN.gets.downcase
dict = Hash.new 0
line.each_char { |c| dict[c] += 1 if c =~ LETTER_REGEX }
dict.sort_by { |key, value| value }.reverse.each { |key, value| puts "#{ key }: #{ value }" }
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