Remove duplicates (sorted)

In-place unique-ification.

arrays two-pointer

Implement `remove_dupes(nums: list[int]) -> list[int]`.

Input is sorted. Return a new list with each value appearing once.

Constraints

0 ≤ len(nums) ≤ 10^5

Example

>>> remove_dupes([1,1,2,3,3,4])
[1, 2, 3, 4]

10 points ~10 min

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Hints

dict.fromkeys preserves order; or just list(dict.fromkeys(nums)).

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