Question

我尝试过使用System.out.print() 但这似乎并不想工作。我试图按递减顺序获取输出。它必须在for循环中吗？或者在我最后使用的public class EmployeeWorkHours { public static void main(String[] args) { Scanner turtle = new Scanner(System.in); String[] calender = { "S", "M", "T", "W", "Th", "F", "S" }; System.out.println("How many Employee's do you have?: "); int NUMBER_OF_EMPLOYEES = turtle.nextInt(); turtle.nextLine(); int [][]hours; int[] totalHours= new int[NUMBER_OF_EMPLOYEES]; hours = new int[NUMBER_OF_EMPLOYEES][7]; String[] employee = new String[NUMBER_OF_EMPLOYEES]; // input for Names for (int x = 0; x < (employee.length); x++) { System.out.println("Name of Employee " + (x + 1) + ": "); String name = turtle.nextLine(); employee[x] = name; } // input for Hours for (int z = 0; z < employee.length; z++) { System.out.println("Starting from Sunday, enter the hours Employee "+ (z + 1)+ " has worked each day (Make sure you seperate it by spaces): "); for (int a = 0; a < 7; a++) { hours[z][a] = turtle.nextInt(); } turtle.nextLine(); } // Print everything out for (int i = 0; i < employee.length; i++) { totalHours[i]=0; for(int j=0; j<7; j ++){ totalHours[i] = totalHours[i]+hours[i][j]; } System.out.println("Employee " + (i + 1) +" worked " + totalHours[i] + " hours"); } } }中？

>>> idx, = np.where(a == 1)
>>> mask = np.logical_or.reduceat(np.isnan(a), idx)[:-1]
>>> np.diff(idx)[~mask]
array([4, 5])

Answer 1

尝试

Collections.sort(arraylist, Collections.reverseOrder());

或者

Collections.sort(list);
Collections.reverse(list);

它还取决于您正在使用的集合的实现。

Answer 2

尝试查看 this。

更具体地说，这部分链接

  Comparator cmp = Collections.reverseOrder();  

   // sort the list
   Collections.sort(list, cmp);  

   System.out.println("List sorted in ReverseOrder: ");      
   for(int i : list){
        System.out.println(i+ " ");
   }

如何按递减顺序进行用户输出？

2 个答案: