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LeetCode solutions

2547. Odd String Difference

My accepted Python solution to LeetCode problem 2547, Odd String Difference, running in 1ms.

  • Difficulty: Easy
  • Python
  • Runtime 1ms
  • Memory 17.3MB

Read the problem on LeetCode View on GitHub

The problem statement is LeetCode’s and stays on their site. What follows is my accepted solution.

Python

Accepted on LeetCode — runtime 1ms, memory 17.3MB, accepted 2026-01-01.

python
class Solution:
    def oddString(self, words: List[str]) -> str:
        def get_diff(word):
            return tuple(ord(word[i+1]) - ord(word[i]) for i in range(len(word)-1))
        
        diffs = [get_diff(w) for w in words]
        if diffs[0] != diffs[1]:
            return words[0] if diffs[1] == diffs[2] else words[1]
        for i in range(2, len(words)):
            if diffs[i] != diffs[0]:
                return words[i]
        return ""

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