Convert the 3D array into a 1D array
[[[1, 2], [3, 4]], [[5, 6], [7, 8]]]
[1, 2, 3, 4, 5, 6, 7, 8]
Below is an instruction that describes a task. Write a response that appropriately completes the request.

### Instruction:
Convert the 3D array into a 1D array

### Response:
[1, 2, 3, 4, 5, 6, 7, 8]