随机分配座位，共50个学生，使学号相邻的同学座位不能相邻

 1     public static void assignSeat(){
 2         int count = 50;
 3         int[][] seats = new int[2][count];//int[0]是50个座位，存储值为学生号，int[1]是对应50个学生，值为1则为已分配，0未分配
 4         Random random = new Random();
 5         int student = random.nextInt(count);
 6         seats[0][0] = student;//先分配第一个座位给student号学生
 7         seats[1][student] = 1;
 8         for(int i = 1 ; i < count ;){
 9             student = random.nextInt(count);
10             if(seats[1][student] != 1 &&
11                     (student - seats[0][i-1]) !=1 &&
12                        (student - seats[0][i-1]) !=-1){
13                 seats[0][i++] = student;
14                 seats[1][student] = 1;
15             }
16             System.out.println( "loop");
17         }
18
19         for(int stu : seats[0])
20             System.out.print(stu + ",");
21     }