I have some trouble with generating all variants of arrays from a number. For example if I have the number 3, I need to get the following arrays:
[1].
[2],
[3],
[1, 2],
[1, 2, 3],
[1, 3]
Order of the numbers in the arrays does not matter.
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Yurii Horchynskyi
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1Please post what you have tried so far....also keep in mind this answer with a variety of ways of doing this can be found on SO already. – Matt Jun 18 '18 at 16:02
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You are looking to calculate the [power set](https://en.wikipedia.org/wiki/Power_set). Perhaps that terminology will help you find the answer now. You are also missing `[2, 3]` in your example. – plalx Jun 18 '18 at 16:09