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Word Counting Algorithm - Utilizing the Hash
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| def count_words(s) | |
| return nil if s.nil? || s.split.empty? | |
| s.downcase.gsub(/[^a-z0-9'!\s-]/i, '').split(" ").each_with_object(Hash.new(0)){ |word,counts| counts[word] += 1 } | |
| end |
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