0xD34F

data.each_value{|n|
  puts("#{n[:name]}: вес #{n[:weight]} г., количество #{n[:qty]} шт.")
}

arr
  .group_by{|n| n[:name]}
  .map{|n| { name: n[0], value: n[1].sum{|m| m[:value]} }}

str
  .delete(' ')
  .split('')
  .reduce(Hash.new(0)){|acc, n| acc[n] += 1; acc}
  .each{|k, v| puts "#{k}: #{v}"}

Array.new(counter){|i| [ "counter #{i + 1}", arr ]}.flatten

str.gsub(/\b[A-Z]+\b/) {|m| m == 'WI' ? m : m.capitalize}

toInsert = 'test.'
newStr = str.dup.sub!(/(?<=www\.)/, toInsert) || (toInsert + str)

words = [ 'and', 'of' ]

sentences.gsub!(/\b(#{words.join('|')})\b/i) {|m| m.downcase}

newArr = arr.map{|n| n['amount'].gsub(/[^\d.]/, '').to_f}

vowelsCount = Hash['aeiou'.chars.map{|n| [ n, 0 ]}]
gets.chomp.chars.each{|n| vowelsCount[n] += 1 if vowelsCount.key?(n)}

print(vowelsCount)

str.split(' ').map{|w| w.length}.reverse.reduce{|b, p| b ** p}

replacements = {
  'Black' => 'African American',
  'AI/AN**' => 'American Indian or Alaskan Native',
  'NH/PI**' => 'Native Hawaiian or Other Pacific Islander'
}

replaced = arr.map{|n| replacements[n] or n}

search = [ 'White', 'Black', 'Asian', 'Hispanic' ]

max = arr
  .select{|n| search.include?(n['description'])}
  .max_by{|n| n['count']}

html_content.gsub!(/<span edit="false">([^<]+)<\/span>/, '\1')