x > Array.new(5) [nil, nil, nil, nil, nil] > x = Array.new(5) nil nil [nil, nil, nil, nil, nil] > x[1] = 999
x > Array.new(5) [nil, nil, nil, nil, nil] > x = Array.new(5) nil 999 nil [nil, nil, nil, nil, nil] > x[1] = 999 999 >
x > [1,2,3,4,5] [1, 2, 3, 4, 5] > x = [1,2,3,4,5] 1 2 3 4 5 1 2 3 4 5 [1, 2, 3, 4, 5] > x[1] = 999
x > [1,2,3,4,5] [1, 2, 3, 4, 5] > x = [1,2,3,4,5] 1 999 3 4 5 1 2 3 4 5 [1, 2, 3, 4, 5] > x[1] = 999 999 >
y x > y = [1,2,3,4,5] [1, 2, 3, 4, 5] > x = [1,2,3,4,5] 1 2 3 4 5 1 2 3 4 5 [1, 2, 3, 4, 5] > x[1] = 999
y x > y = [1,2,3,4,5] [1, 2, 3, 4, 5] > x = [1,2,3,4,5] 1 999 3 4 5 1 2 3 4 5 [1, 2, 3, 4, 5] > x[1] = 999 999 > y[1] 2 >
y x > y = [1,2,3,4,5] [1, 2, 3, 4, 5] > x = y 1 2 3 4 5 [1, 2, 3, 4, 5] > x[1] = 999
y x > y = [1,2,3,4,5] [1, 2, 3, 4, 5] > x = y 1 999 3 4 5 [1, 2, 3, 4, 5] > x[1] = 999 999 > y[1] 999 >
x 0> x = Array.new(5) [nil, nil, nil, nil, nil] 0> nil
x 0> x = Array.new(5) [nil, nil, nil, nil, nil] 0> x[1] = Array.new(3) nil [nil, nil, nil] 0> x[1][2] = 999 nil
x 0> x = Array.new(5) [nil, nil, nil, nil, nil] 0> x[1] = Array.new(3) nil [nil, nil, nil] 0> x[1][2] = 999 999 0> nil 999
0> x = Array.new(5) [nil, nil, nil, nil, nil] 0> x nil
0> x = Array.new(5) [nil, nil, nil, nil, nil] 0> for i in 0..x.size-1 1> x[i] = Array.new(3) 1> end 0..4 0> x nil nil nil nil nil