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40 lines (34 loc) · 889 Bytes
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set_matrix-zeros.cpp
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40 lines (34 loc) · 889 Bytes
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class Solution {
public:
void setZeroes(vector<vector<int>>& matrix) {
int n = matrix.size();
int m = matrix[0].size();
int col0 = 1;
for(int i=0;i<n;i++){
for(int j=0;j<m;j++){
if(matrix[i][j]==0){
matrix[i][0] = 0;
if(j != 0)
matrix[0][j] = 0;
else
col0 = 0;
}
}
}
for(int i=1;i<n;i++){
for(int j=1;j<m;j++){
if(matrix[i][0]==0 || matrix[0][j]==0){
matrix[i][j] = 0;
}
}
}
if(matrix[0][0]==0){
for(int j=0;j<m;j++)
matrix[0][j]=0;
}
if(col0==0){
for(int i=0;i<n;i++)
matrix[i][0]=0;
}
}
};