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2023.11.17 Today's Challenge 본문

Problem Solving/LeetCode

2023.11.17 Today's Challenge

fabichoi 2023. 11. 17. 23:45

https://leetcode.com/problems/find-unique-binary-string/

 

Find Unique Binary String - LeetCode

Can you solve this real interview question? Find Unique Binary String - Given an array of strings nums containing n unique binary strings each of length n, return a binary string of length n that does not appear in nums. If there are multiple answers, you

leetcode.com

조합을 만들어서 푸는 문제

class Solution:
    def findDifferentBinaryString(self, nums: List[str]) -> str:
        ints = set()
        for n in nums:
            ints.add(int(n, 2))
        l = len(nums)
        for n in range(l+1):
            if n not in ints:
                ans = bin(n)[2:]
                return "0" * (l - len(ans)) + ans
        
        return ""
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