물음표 살인마의 개발블로그

알고리즘 문제/Leetcode

1198. Find Smallest Common Element in All Rows

BEstyle 2023. 5. 2. 14:50
class Solution:
    def smallestCommonElement(self, mat: List[List[int]]) -> int:
        ans=set(mat[0])
        for i in range(1,len(mat)):
            ans=ans& set(mat[i])
            
        return min(ans) if len(ans)>=1 else -1