Iterator Solutions

1. Define a method, #print_10, that prints the numbers 1 - 10. Do this two different ways:

   • Using Range#each
   • Using #upto

    def print_10_range
      (1..10).each { |n| puts n }
    end
   
    def print_10_upto
      1.upto(10) { |n| puts n }
    end
   

2. Define a method, #string_squared(string), that prints the string the number of times that it has characters.

    def string_squared(string)
      string.length.times do
        puts string
      end
    end
   

3. Define a method, #collect_thirds(array), that iterates through an array and collects every third element. Do this in two different ways:

   • array.select.with_index
   • #step

    def collect_thirds_select(array)
      array.select.with_index do |_, idx|
        (idx + 1) % 3 == 0
      end
    end
   
    def collect_thirds_step(array)
      thirds = []
      last_idx = array.length - 1
   
      2.step(last_idx, 3) do |idx|
        thirds << array[idx]
      end
   
      thirds
    end