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setMatrixZeros.cpp
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setMatrixZeros.cpp
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void Solution::setZeroes(vector<vector<int> > &matrix) {
// Start typing your C/C++ solution below
// DO NOT write int main() function
int row = matrix.size();
if (row==0){return;}
int col = matrix[0].size();
if (col==0){return;}
bool fc0=false;
bool fr0=false;
for (int i=0;i<col;i++){
if (matrix[0][i]==0){fr0 = true;}
}
for (int i=0;i<row;i++){
if (matrix[i][0]==0){fc0 = true;}
}
for (int i=1;i<row;i++){
for (int j=1;j<col;j++){
if (matrix[i][j]==0){
matrix[i][0]=0;
matrix[0][j]=0;
}
}
}
for (int i=1;i<col;i++){
if (matrix[0][i]==0){
for(int j=0;j<row;j++){
matrix[j][i]=0;
}
}
}
for (int i=1;i<row;i++){
if (matrix[i][0]==0){
for(int j=0;j<col;j++){
matrix[i][j]=0;
}
}
}
if (fr0){
for (int i=0;i<col;i++){matrix[0][i]=0;}
}
if (fc0){
for (int i=0;i<row;i++){matrix[i][0]=0;}
}
return;
}