example_regex.rb

phone_numbers = [
  "(206) 555-1234",
  "425-555-9999",
  "406.555.1818",
  "+1 206 555 8888",
  "4255558872",
]

pattern = /^.*(\d{3}).*(\d{3}).*(\d{4})$/

phone_numbers.each do |number|
  match = number.match(pattern)
  puts "(#{match[1]}) #{match[2]}-#{match[3]}"
end

# emails = ["[email protected]", "[email protected]", "[email protected]"]
# email_regex = /.*@(.*\..*)/

# # Create a new hash where missing values are initialized to 0
# domain_counts = Hash.new(0)

# emails.each do |email|
#   match_result = email.match(email_regex)
#   next unless match_result # skip strings that don't match
#   domain = match_result[1]
#   domain_counts[domain] += 1
# end

# domain_counts.each do |domain, count|
#   puts "#{domain}: #{count}"
# end

# pattern = /(.+)@(.+\..+)/

# match_results = "[email protected]".match(pattern)

# puts match_results[0]
# puts match_results[1]
# puts match_results[2]

# text = gets.chomp

# if pattern.match(text)
#   puts "it matches"
# else
#   puts "that's an invalid phone #"
# end