kickstart

gistfile1.rb

# Initialize the var
dupe_docs = {}

# In your loop/routine
dupe_docs[doc_id] = [] if dupe_docs[doc_id].nil?
dupe_docs[doc_id] << encounter_number

# At the bottom, output the totals
puts "There were #{dupe_docs.count} duplicate documents:"
dupe_docs.each do |doc, encounters|
  puts "#{doc} - #{encounters.count} encounters"
  encounters.each { |encounter| puts "  #{encounter}" }
end