2025-08-16 15:43:20 +0000 UTC

Check Whether Two Strings are Almost Equivalent
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Code

class Solution:
    def checkAlmostEquivalent(self, word1: str, word2: str) -> bool:
        freqs = [0] * 26
        for char in word1:
            freqs[ord(char) - 97] += 1
        for char in word2:
            freqs[ord(char) - 97] -= 1
        for freq in freqs:
            if freq > 3 or freq < -3:
                return False
        return True