21 lines
380 B
Markdown
21 lines
380 B
Markdown
---
|
|
title: List union
|
|
tags: list
|
|
expertise: beginner
|
|
firstSeen: 2019-08-21T09:10:39+03:00
|
|
lastUpdated: 2020-11-02T19:28:35+02:00
|
|
---
|
|
|
|
Returns every element that exists in any of the two lists once.
|
|
|
|
- Create a `set` with all values of `a` and `b` and convert to a `list`.
|
|
|
|
```py
|
|
def union(a, b):
|
|
return list(set(a + b))
|
|
```
|
|
|
|
```py
|
|
union([1, 2, 3], [4, 3, 2]) # [1, 2, 3, 4]
|
|
```
|