package question;

/*
 @author: Roderland
 @create: 2020年10月30日---15:50
*/
public class Question463 {
 public int islandPerimeter(int[][] grid) {
 if (grid==null||grid.length==0||grid[0].length==0) return 0;
 int[][] row = new int[grid.length+1][grid[0].length];
 int[][] column = new int[grid[0].length+1][grid.length];
 for (int i = 0; i < grid.length; i++) {
 for (int j = 0; j < grid[i].length; j++) {
 if (grid[i][j]==1) {
 row[i][j]++;
 row[i+1][j]++;
 column[j][i]++;
 column[j+1][i]++;
 }
 }
 }
 int sum = 0;
 for (int[] ints : row) {
 for (int anInt : ints) {
 if (anInt==1) sum++;
 }
 }
 for (int[] ints : column) {
 for (int anInt : ints) {
 if (anInt==1) sum++;
 }
 }
 return sum;
 }
}