Iterator Exercises

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

   • Using Range#each
   • Using #upto

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

    string_squared('abc')   # ==> prints "abc" 3 times
    string_squared('hello') # ==> prints "hello" 5 times
   

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

    collect_thirds([3, 4])                      # ==> []
    collect_thirds([3, 4, 5, 7, 6, 4, 2])       # ==> [5, 4]
    collect_thirds([3, 4, 5, 7, 6, 4, 2, 1, 1]) # ==> [5, 4, 1]