arrays.rb

array = ['Michel Polnareff', 'Michel Jonasz', 'Michel Delpech', 'Maxime Leforestier']
# "Mr"
new_array = []
array.each do |singer|
  new_array << "Mr #{singer}"
end
# p new_array

# MAP
# input : array
# output : array with same size

new_array = array.map do |singer|
  "Mr #{singer}"
end
# p new_array


new_array.each do |singer|
 puts "#{new_array.index(singer) + 1}. #{singer}"
end