MediumLists

Remove duplicates (preserve order)

Given a list with duplicates, return a list of unique items in their first-seen order.

Sample input

[1, 2, 1, 3, 2, 4]

Sample output

[1, 2, 3, 4]

remove-duplicates.py

Output

Press "Run code" to execute.

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Remove duplicates (preserve order) — Python Practice · Nettms Academy