ruby_arrays.rb

2.2.2 :015 > array = Array.new
 #=> [] 
2.2.2 :016 > array = Array.new(5)
 #=> [nil, nil, nil, nil, nil] 
2.2.2 :017 > array = [ '1', '2', '3' ]
 #=> ["1", "2", "3"] 
2.2.2 :018 > array = ('1'..'3').to_a
 #=> ["1", "2", "3"] 
2.2.2 :019 > array = *('1'..'3')
 #=> ["1", "2", "3"] 
2.2.2 :020 > array = %w[ 1 2 3 ]
 #=> ["1", "2", "3"] 
2.2.2 :021 > array = Array.new(3){ |i| (i+1).to_s }
 #=> ["1", "2", "3"] 
2.2.2 :022 > array = 1.step(17,3).to_a
 #=> [1, 4, 7, 10, 13, 16] 
2.2.2 :023 > array = [] << 1 << 2 << 3
 #=> [1, 2, 3] 
2.2.2 :024 > a = %w| 1 2 3 4 5 |
 #=> ["1", "2", "3", "4", "5"] 
2.2.2 :025 > array = [*'1'..'3']
 #=> ["1", "2", "3"] 
2.2.2 :026 > array = Array.new(3, '1')
 #=> ["1", "1", "1"] 
2.2.2 :027 > array = Array.[](1, 2, 3, 4,5)
 #=> [1, 2, 3, 4, 5] 
2.2.2 :028 > array = Array(0..9)
 #=> [0, 1, 2, 3, 4, 5, 6, 7, 8, 9]