Remove_duplicate_words.md

CodeWars Python Solutions

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Remove duplicate words

Your task is to remove all duplicate words from a string, leaving only single (first) words entries.

Example:

Input:

'alpha beta beta gamma gamma gamma delta alpha beta beta gamma gamma gamma delta'

Output:

'alpha beta gamma delta'

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Given Code

def remove_duplicate_words(s):
    pass

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Solution 1

def remove_duplicate_words(s):
    l = []
    for word in s.split():
        if word not in l:
            l.append(word)
    return " ".join(l)

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Solution 2

def remove_duplicate_words(s):
    return " ".join(sorted(set(s.split()), key = s.index))

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