Set Matrix Zeroes
Given an m x n integer matrix, if an element is 0, set its entire row and column to 0.
You must modify the matrix 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]]
Explanation
The middle element is 0. Therefore, its entire row and column are changed to 0.
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]]
Explanation
The zeros are present in the first row at columns 0 and 3. Therefore, the corresponding rows and columns are set to zero.0
Constraints
Hints:
Hint 1
First identify which rows and columns contain zeroes before modifying the matrix.
Author & Technical Reviewer
Technically reviewed by: ExamAdda Technical Review Team
Technical Reviewers, ExamAdda
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Published
Aug 18, 2026
Last updated
Aug 18, 2026
Content Verification Methodology
Definitions and complexity claims were checked against authoritative computer-science references. Code examples were compiled and tested with standard, boundary and edge-case inputs.
Expected Output