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# Function setDistinct

Collect the distinct elements of a multiset.
A multi-dimension array will be converted to a single-dimension array before the operation.


## Syntax

```js
math.setDistinct(set)
```

### Parameters

Parameter | Type | Description
--------- | ---- | -----------
`a` | Array &#124; Matrix | A multiset

### Returns

Type | Description
---- | -----------
Array &#124; Matrix | A set containing the distinc elements of the multiset


## Examples

```js
math.setDistinct([1, 1, 1, 2, 2, 3])        // returns [1, 2, 3]
```


## See also

[setMultiplicity](setMultiplicity.md)