Make an array 1

1. Return the integer array {2,5,10,20}.

2. Return the String array {"Fast","Fish","Frying","Food"}.

Make an array 2

• Make an array with n zeros.

• Fill it with the numbers 0 through (n-1).

    fill_a(6) == {0,1,2,3,4,5}
  

Make an array 3

• Make an array with 2n zeros.

• Fill it with integers, counting up from 21.

    fill_b(3) == {21,22,23,24,25,26}