Removes duplicates in array using user defined method [duplicate]

Question

I need to remove the duplicates in this array:

int[] array = {20, 100, 10, 80, 70, 1, 0, -1, 2, 10, 15, 300, 7, 
           6, 2, 18, 19, 21, 9, 0};

Using a custom method.

how do I go about this?

"Using a custom method" As opposed to what? Do you know of a standard method doing that? — Andreas
– Andreas, Commented Dec 18, 2016 at 17:02

FallAndLearn · Accepted Answer · 2016-12-18 16:43:24Z

1

Use a HashSet

You can try this:

Set<T> mySet = new HashSet<T>(Arrays.asList(someArray));

Set stores only unique elements.

Convert back your set to array using myset.toArray()

answered Dec 18, 2016 at 16:41

FallAndLearn

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2 Comments

... and convert it back to a list.

yea I forgot. Done!