LeetCode:Set Matrix Zeros

Given a m x n matrix, if an element is 0, set its entire row and column to 0. Do it in place.

 1 class Solution {
 2 public:
 3     void setZeroes(vector<vector<int>>& matrix) {
 4         
 5         int m=matrix.size();
 6         int n=matrix[0].size();
 7         vector<bool> row(m,false);
 8         vector<bool> col(n,false);
 9         
10         for(int i=0;i<m;++i)
11             for(int j=0;j<n;++j)
12                 if(matrix[i][j]==0)
13                     row[i]=col[j]=true;
14                     
15         for(int i=0;i<m;++i)
16             if(row[i])
17                 fill(&matrix[i][0],&matrix[i][0]+n,0);
18         
19         for(int j=0;j<n;++j)
20             if(col[j])
21                 for(int i=0;i<m;++i)
22                     matrix[i][j]=0;
23     }
24 };