15 lines
309 B
Markdown
15 lines
309 B
Markdown
### difference
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Returns the difference between two arrays.
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Create a `set` from `b`, then use list comprehension to only keep values not contained in `b`
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```python
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def difference(a, b):
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b = set(b)
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return [item for item in a if item not in b]
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```
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``` python
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difference([1, 2, 3], [1, 2, 4]) # [3]
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``` |