Arrays·easy 10 min 50 XP
Remove Duplicates
Return a new array containing each value once, preserving first-seen order.
Examples
- removeDuplicates([1, 1, 2]) → [1, 2]
Constraints
- Keep the required function name so the tests can find it
- Return a value instead of only logging it
- Do not mutate inputs unless the challenge asks you to
Remove Duplicates · editor
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