我是新手,但我正在做一个酒店预订计划。
所以我有一个带有所有房间的2D int数组,当我启动程序时,我希望它们随机地随机播放到一个名为RoomNotInUse或RoomInUse的数组中(所以我开始程序,随机生成房间。
如果有人知道解决方法,那会很棒吗。)
// ARRAYS
protected static int[][] rooms = {
{1,1}, {1,2}, {1,3}, {1,4}, {1,5},
{2,1}, {2,2}, {2,3}, {2,4}, {2,5},
{3,1}, {3,2}, {3,3}, {3,4}, {3,5},
{4,1}, {4,2}, {4,3}, {4,4}, {4,5},
{5,1}, {5,2}, {5,3}, {5,4}, {5,5}
};
//Declare all hotel rooms 5x5, the first number is the floor and the sec is the room
private char[][] ROIU = {
};
//Rooms not in use
private char[][] RIU = {
};
//Rooms in use
public class roomShuffle {
}
//Shuffle all rooms in 2 diffrent arrays, ROIN and RIU
public class RoomNotInUse {
}
//Displayes all the rooms thats not in use
public class RoomInUse {
}
//Displayes all rooms in use
}
答案 0 :(得分:8)
您可以使用针对二维数组修改的Fisher-Yates算法:
void shuffle(int[][] a) {
Random random = new Random();
for (int i = a.length - 1; i > 0; i--) {
for (int j = a[i].length - 1; j > 0; j--) {
int m = random.nextInt(i + 1);
int n = random.nextInt(j + 1);
int temp = a[i][j];
a[i][j] = a[m][n];
a[m][n] = temp;
}
}
}
答案 1 :(得分:1)
将所有数组分配到列表中。而不是使用Collections.shuffle()
。
List<int[]> pair=new ArrayList<int[]>();
pair.addAll(Arrays.asList(rooms));
Collections.shuffle(pair);
答案 2 :(得分:0)
答案 3 :(得分:0)
Java中的通用shuffle方法应该与此类似
重要的是你必须在集合中使用随机元素交换项目;)
public void shuffle(Comparable [] a){
for(int i=0;i,a.length;i++)
swap(a,i,getRandom(i,a.length-1);
}
private int getRandom(int min, int max){
Random rnd = new Random();
return min + rnd.nextInt(max-min+1);
}
private void swap(Comparable [] a, int i, int j){
Comparable temp = a[i];
a[i]=a[j];
a[j]=temp;
}
否则您可以使用Collection.shuffle方法。
答案 4 :(得分:0)
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