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DAY0060.cpp
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44 lines (44 loc) · 1.14 KB
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// 73. Set Matrix Zeroes
class Solution {
public:
void setZeroes(vector<vector<int>>& matrix) {
int row=matrix.size(),col=matrix[0].size();
bool firstcol=false,firstrow=false;
for(int i=0;i<row;i++){
for(int j=0;j<col;j++){
if(matrix[i][j]==0){
if(i==0) {firstrow=true;}
if(j==0) {firstcol=true;}
else{
matrix[0][j]=0;
matrix[i][0]=0;
}
}
}
}
for(int i=1;i<row;i++){
if(matrix[i][0]==0){
for(int j=0;j<col;j++){
matrix[i][j]=0;
}
}
}
for(int j=1;j<col;j++){
if(matrix[0][j]==0){
for(int i=0;i<row;i++){
matrix[i][j]=0;
}
}
}
if(firstcol){
for(int i=0;i<row;i++){
matrix[i][0]=0;
}
}
if(firstrow){
for(int j=0;j<col;j++){
matrix[0][j]=0;
}
}
}
};