57 lines
1.7 KiB
Java
57 lines
1.7 KiB
Java
public class Q5 {
|
|
|
|
//first solution
|
|
public static int countInside (int[][] map, int row, int col) {
|
|
int initialCount = 0;
|
|
for(int[] innerArray: map) {
|
|
for(int val: innerArray) {
|
|
if (val = 1)
|
|
initialCount++;
|
|
}
|
|
}
|
|
|
|
countInsideRecursive(row, col, map);
|
|
|
|
int finalCount = 0;
|
|
for(int[] innerArray: map) {
|
|
for(int val: innerArray) {
|
|
if (val = 1)
|
|
finalCount++;
|
|
}
|
|
}
|
|
return finalCount - initialCount;
|
|
|
|
}
|
|
private static void countInsideRecursive(int row, int col, int[][] map) {
|
|
map[row][col] = 1;
|
|
if (room[row - 1][col] == 0) //up
|
|
countInsideRecursive(row - 1, col, map);
|
|
if (room[row + 1][col] == 0) //down
|
|
countInsideRecursive(row + 1, col, map);
|
|
if (room[row][col - 1] == 0) //left
|
|
countInsideRecursive(row, col - 1, map);
|
|
if (room[row][col + 1] == 0) //right
|
|
countInsideRecursive(row, col+1, map);
|
|
}
|
|
|
|
//better solution
|
|
|
|
private static int countInside(int row, int col, int[][] map) {
|
|
map[row][col] = 1;
|
|
int count = 0;
|
|
if (room[row - 1][col] == 0) {//up
|
|
count = 1 + countInside(row - 1, col, map);
|
|
}
|
|
if (room[row + 1][col] == 0) {//down
|
|
count = 1 + countInside(row + 1, col, map);
|
|
}
|
|
if (room[row][col - 1] == 0) {//left
|
|
count = 1 + countInside(row, col - 1, map);
|
|
}
|
|
if (room[row][col + 1] == 0) {//right
|
|
count = 1 + countInside(row, col+1, map);
|
|
}
|
|
return count;
|
|
}
|
|
}
|