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Copy path073_Set_Matrix_Zeroes.cpp
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32 lines (32 loc) · 1004 Bytes
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Copy path073_Set_Matrix_Zeroes.cpp
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32 lines (32 loc) · 1004 Bytes
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class Solution {
public:
void setZeroes(vector<vector<int> > &matrix) {
int m = matrix.size(), n = matrix[0].size();
bool rz = false, cz = false;
for(int i = 0; i < m; i++) {
for(int j = 0; j < n; j++)
if(matrix[i][j]==0){
if(!i)
rz = true;
if(!j)
cz = true;
if(i && j)
matrix[i][0] = matrix[0][j] = 0;
}
}
for(int i = 1; i < m; i++)
if(matrix[i][0] == 0)
for(int j = 1; j < n; j++)
matrix[i][j] = 0;
for(int j = 1; j < n; j++)
if(matrix[0][j] == 0)
for(int i = 1; i < m; i++)
matrix[i][j] = 0;
if(rz)
for(int j = 0; j < n; j++)
matrix[0][j] = 0;
if(cz)
for(int i = 0; i < m; i++)
matrix[i][0] = 0;
}
};