public static void main(String[] args) { Scanner sc=new Scanner(System.in); System.out.println("输入一个数据:"); int week=sc.nextInt(); switch (week){ case 1: case 2: case 3: case 4: case 5: System.out.println("今天是工作日"); break; case 6: case 7: System.out.println("今天是休息日"); break; default: System.out.println("非法数据"); break; } }