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$ curl repovive.com/roadmaps/python/tuples-sets/remove-duplicates-implementation

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$ curl repovive.com/roadmaps/python/tuples-sets/remove-duplicates-implementation

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Remove Duplicates - Implementation - Tuples & Sets | Python | Repovive

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Python9 sections · 462 units23h total

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Remove Duplicates - Implementation

The code

Here's the solution:

def remove_duplicates(words):
    seen = set()
    result = []
    for word in words:
        if word not in seen:
            seen.add(word)
            result.append(word)
    return result

For each word, checking word not in seen is $O(1)$ . Adding to the set and list are both $O(1)$ .

Time: $O(n)$ where $n$ is the number of words. Space: $O(u)$ where $u$ is unique words.