array = [1, 2, 3]array.push 4array.push [5, 6]array.push 7, 8p array # => [1, 2, 3, 4, [5, 6], 7, 8]
array = [1, 2, 3] array.push 4 array.push [5, 6] array.push 7, 8 p array # => [1, 2, 3, 4, [5, 6], 7, 8]