2025-08-16 11:16:53 +0000 UTC

class Solution:
    def construct2DArray(self, original: List[int], m: int, n: int) -> List[List[int]]:
        i = 0
        if len(original) != m * n:
            return []
        res = [[None] * n for _ in range(m)]
        for row in range(m):
            for col in range(n):
                res[row][col] = original[i]
                i += 1
        return res