Update Set Matrix Zero.cpp

Author: jahnvisrivastava100

2D Arrays/Set Matrix Zero.cpp

@@ -1,3 +1,31 @@
+/*______________________________________________________________________PROBLEM___________________________________________________________*/
+
+/*Given an m x n matrix. If an element is 0, set its entire row and column to 0. Do it in-place.
+   Follow up:
+
+A straight forward 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?
+
+ 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]]
+ 
+ 
+ 
+ Constraints:
+
+m == matrix.length
+n == matrix[0].length
+1 <= m, n <= 200
+-231 <= matrix[i][j] <= 231 - 1
+*/
+ 
+
 class Solution {
 public:
     void setZeroes(vector<vector<int>>& m) {