cpp-flashcards/org/study_deck_02/dsa/math-geometry/0073-set-matrix-zeroes.org

#+PROPERTY: STUDY_DECK_02
* TODO 0073. Set Matrix Zeroes :medium:
:PROPERTIES:
:NEETCODE: [[file:../../roadmap.org::*0073. Set Matrix Zeroes][0073. Set Matrix Zeroes]]
:END:

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:*


#+begin_src
Input: matrix = [[1,1,1],[1,0,1],[1,1,1]]
Output: [[1,0,1],[0,0,0],[1,0,1]]
#+end_src


*Example 2:*


#+begin_src
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]]
#+end_src


*Constraints:*

 - ~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?

** TODO Approach
Write your approach here.

** TODO Python
#+begin_src python
class Solution:
    def setZeroes(self, matrix: List[List[int]]) -> None:
        """
        Do not return anything, modify matrix in-place instead.
        """
#+end_src

** TODO C++
#+begin_src cpp
class Solution {
public:
    void setZeroes(vector<vector<int>>& matrix) {
        
    }
};
#+end_src