Set Matrix Zeroes

arrayhash tablematrix

Given an m x n integer matrix matrix , if an element is 0 , set its entire row and column to 0 's.

You must do it in place .

Example 1

Input: matrix = [[1,1,1],[1,0,1],[1,1,1]]
Output: [[1,0,1],[0,0,0],[1,0,1]]

Example 2

Input: matrix = [[0,1,2,0],[3,4,5,2],[1,3,1,5]]
Output: [[0,0,0,0],[0,4,5,0],[0,3,1,0]]

m == matrix.length

n == matrix[0].length

1 <= m, n <= 200

-2 ^31 <= matrix[i][j] <= 2 ^31 - 1

Follow up:

A straightforward solution using O(mn) space is probably a bad idea.

A simple improvement uses O(m + n) space, but still not the best solution.

Could you devise a constant space solution?

🤔

Medium

Difficulty

Topic Info

ModuleDSA

CategoryArray

Sub-topicHash Table