LC 884

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Publish Date:   2022-02-22

Solution to LeetCode 884 Uncommon Words from Two Sentences.

LeetCode 884

Uncommon Words from Two Sentences (Medium). [link]

Time complexity O(|S1|+|S2|). Space complexity O(|S1|+|S2|).

class Solution(object):
    def uncommonFromSentences(self, s1, s2):
        """
        :type s1: str
        :type s2: str
        :rtype: List[str]
        """
        frequency = Counter(s1.split()) + Counter(s2.split())
        ans = []
        for word, count in frequency.items():
            if count == 1:
                ans.append(word)
        return ans
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