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  1. #1
    chdn202002 is offline Member
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    Jul 2011
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    Default sorted, shuffled, reversed

    Hello, Iím trying to write a program that takes in numbers until a sentinel value is entered then displays a sorted, shuffled and reversed?

    So far this is what I have come up with.

    I know I need to implement the comparator but Iím not sure how too.

    Could you provide some feedback?


    Public class SortShuffle {
    public static void main(String[] args) {

    Collection<Integer> list = new ArrayList<Integer>();

    Scanner scan = new Scanner (;

    System.out.println (" Input Number : ( 0 to exit ) ");
    int data = scan.nextInt();

    int sum = 0;
    while (data != 0) {
    sum +=data;

    System.out.println (" Input Number : ( 0 to exit ) ");
    data = scan.nextInt();
    System.out.println (" The sorted numbers are ");
    System.out.println (" The shuffled numbers are ");
    Collections.shuffle((java.util.List<?>) list);
    System.out.println (" The reversed numbers are ");

  2. #2
    sunde887's Avatar
    sunde887 is offline Moderator
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    Jan 2011
    Richmond, Virginia
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    Rather than doing set up before the loop and then getting more input in the loop you can shorten it with something like this

    Java Code:
    int n;
    while((n=in.nextInt())!= 0){
      //do stuff
    What happens when you just pass the list into sort and shuffle? Look up what the reverseOrder method it. what does reversing the list imply? Some sort of sorting perhaps? What happens if you use it's comparator to sort a list?

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