how do I remove elements duplicates from Integer array with stream api

Question

I searched everything about this but I found nothing. So I have an Integer array and I would like to remove elements duplicated on it with stream api, for example:

Integer[] buffer = new Integer[]{10,23,8,10,8,1,2,1};

after this -> buffer = Stream.of(buffer)...

buffer now has these numbers {10,23,8,10,1,2}

So I hope you understand what I mean and I thank you for helping me.

Did you intend to keep the 10s?

Khalil Khalaf
– Khalil Khalaf

2016-03-21 19:22:51 +00:00
Commented Mar 21, 2016 at 19:22 — Khalil Khalaf
– Khalil Khalaf, Commented Mar 21, 2016 at 19:22

Alexis C. · Accepted Answer · 2016-03-21 19:17:18Z

2

Using the Stream API:

Integer[] buffer = {10,23,8,10,8,1,2,1};
buffer = Stream.of(buffer).distinct().toArray(Integer[]::new);

answered Mar 21, 2016 at 19:17

Alexis C.

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Mureinik · Accepted Answer · 2016-03-21 17:34:19Z

0

It would be much simpler to just use a Set to remove duplicates:

Integer[] buffer = new Integer[]{10,23,8,10,8,1,2,1};
Set<Integer> set = new HashSet<>(Arrays.asList(buffer));
buffer = set.toArray(new Integer[set.size()]);

answered Mar 21, 2016 at 17:34

Mureinik

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