1.7---将矩阵元素为0的行列清零0（CC150）

import java.util.ArrayList;
import java.util.List;

public class Solution{

public static void main(String[] args){
int[][] matix = {{1,2},{0,3}};
clearZero(matix,2);
System.out.println(matix[0][1]);
}

public static int[][] clearZero(int[][] matrix, int n){
int high = matrix.length;
int wide = matrix.length;
if(high == 0) return matrix;
List<Integer> listRow = new ArrayList();
List<Integer> listCol = new ArrayList();
for(int i = 0; i < wide; i++){
for(int j = 0; j < high; j++){
if(matrix[i][j] == 0){
listRow.add(i);
listCol.add(j);
}
}
}
for(int tmp : listRow){
for(int j = 0; j < high; j++){
matrix[tmp][j] = 0;
}
}
for(int tmp : listCol){
for(int i = 0; i < wide; i++){
matrix[i][tmp] = 0;
}
}
return matrix;
}