2025-08-21 10:40:48 +0000 UTC

class Solution:
    def findColumnWidth(self, grid: List[List[int]]) -> List[int]:
        res = []
        for col in range(len(grid[0])):
            max_len = 0
            for row in range(len(grid)):
                val = grid[row][col]
                if val == 0:
                    count = 1
                elif val < 0:
                    count = 1
                    val = -val
                else:
                    count = 0
                while val > 0:
                    count += 1
                    val //= 10
                max_len = max(max_len, count)
            res.append(max_len)
        return res