Duplicate Character Counter in Ruby

Welcome to the Duplicate Character Counter in Ruby page! Here, you'll find the source code for this program as well as a description of how the program works.

Current Solution

# Duplicate Character Counter
if ARGV.length == 0 || ARGV[0] == ''
  puts 'Usage: please provide a string'
else
   hash_count_duplicate_letters = ARGV[0].each_char.with_object(Hash.new(0)) {|a, b| b[a]+=1}
   counter_duplicate_letters = 0
   hash_count_duplicate_letters.each do |key, value|
    if value>1
        puts "#{key}: #{value}"
        counter_duplicate_letters += 1
    end
end
    if counter_duplicate_letters == 0 
        puts "No duplicate characters"
    end 
end
# end

Duplicate Character Counter in Ruby was written by:

• MSJ

If you see anything you'd like to change or update, please consider contributing.

How to Implement the Solution

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How to Run the Solution

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