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30secondsofcode
2019-10-03 07:40:27 +00:00
parent c230973b01
commit 0637d829bd
3 changed files with 8 additions and 8 deletions
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@@ -661,12 +661,12 @@ initialize_list_with_values(5, 2) # [2, 2, 2, 2, 2]
Returns a list of elements that exist in both lists.
Create a `set` from `b`, then use list comprehension on `a` to only keep values contained in both lists.
Create a `set` from `a` and `b`, then use the built-in set operator `&` to only keep values contained in both sets, then transform the `set` back into a `list`.
```py
def intersection(a, b):
_b = set(b)
return [item for item in a if item in _b]
_a, _b = set(a), set(b)
return list(_a & _b)
```
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