#3033

Modify the Matrix

pupil · 300 · lc easy +20 · verified · 69% accepted · 153 likes · top 76%

Description

Given a 0-indexed m x n integer matrix matrix, produce a new matrix answer equal to matrix, then replace every -1 with the column maximum.

Return answer.

Example 1:

Input: matrix = [[1,2,-1],[4,-1,6],[7,8,9]]

Output: [[1,2,9],[4,8,6],[7,8,9]]

Explanation: The diagram above shows the elements that are changed (in blue).

- We replace the value in the cell [1][1] with the maximum value in the column 1, that is 8.

- We replace the value in the cell [0][2] with the maximum value in the column 2, that is 9.

Example 2:

Input: matrix = [[3,-1],[5,2]]

Output: [[3,2],[5,2]]

Explanation: The diagram above shows the elements that are changed (in blue).

Code

1

2

3

class Solution:
    def modifiedMatrix(self, matrix: List[List[int]]) -> List[List[int]]:

class Solution:
    def modifiedMatrix(self, matrix: List[List[int]]) -> List[List[int]]: