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public class SetMatrixZeroes {
public void setZeroes(int[][] matrix) {
if (matrix == null || matrix.length == 0 || matrix[0].length == 0) {
return;
}
Set<Integer> line = new HashSet<Integer>();
Set<Integer> row = new HashSet<Integer>();
for (int i = 0; i < matrix.length; i++) {
for (int j = 0; j < matrix[0].length; j++) {
if (matrix[i][j] == 0) {
line.add(i);
row.add(j);
}
}
}
for (Integer n : line) {
for (int i = 0; i < matrix[0].length; i++) {
matrix[n][i] = 0;
}
}
for (Integer n : row) {
for (int i = 0; i < matrix.length; i++) {
matrix[i][n] = 0;
}
}
}
}
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