Given a m x n matrix, if an element is 0, set its entire row and column to 0. Do it in-place.
Example 1:
Input:
[
[1,1,1],
[1,0,1],
[1,1,1]
]
Output:
[
[1,0,1],
[0,0,0],
[1,0,1]
]
Example 2:
Input:
[
[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]
]
C++
void setZeroes(vector<vector<int>>& matrix) {
vector<pair<int,int>> rem;
for(int i = 0;i < matrix.size();++i)
{
for(int j = 0;j < matrix[0].size();++j)
{
if(matrix[i][j] == 0)
{
pair<int,int> temp(i,j);
rem.push_back(temp);
}
}
}
for(int i = 0;i < rem.size();++i)
{
pair<int,int> temp = rem[i];
int row = temp.first;
int col = temp.second;
for(int j = 0;j < matrix[0].size();++j)
matrix[row][j] = 0;
for(int j = 0;j < matrix.size();++j)
matrix[j][col] = 0;
}
}