Get all unique sequences from an array

Asked Aug 16 '18 at 18:52

Active Aug 16 '18 at 18:55

Viewed 125 times

Ive read many post about how to generate unique random sequences, yet none about how to get all unique sequences from an given array.

ex. i have an array like so: [1,2,3,4]

I need to come up with some logic on how to obtain an list of int array's containing all (unique) sequences that can be made from that array.
[1,2,3,4]
[1,2,4,3]
[1,3,2,4]
[1,3,4,2]
[1,4,2,3]
[1,4,3,2]
etc etc...

This thing is eating me, pseudo this didn't look hard at all, but either I'm missing something obvious or this is some advanced task.

Thanks in advance!

asked Aug 16 '18 at 18:52

FixForTheFix

Are you assuming that the array elements are all distinct? – John Bollinger Aug 16 '18 at 18:56
Maybe this one is more complex but you will find your solution here: https://stackoverflow.com/questions/29910312/algorithm-to-get-all-the-combinations-of-size-n-from-an-array-java – nguyentt Aug 16 '18 at 18:59
@johnBollinger yes, all elements are distinct. – FixForTheFix Aug 16 '18 at 19:02
1

@nguyentt Thanks, I should be able to get my solution with that helpfull thread! – FixForTheFix Aug 16 '18 at 19:06

Get all unique sequences from an array

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