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Thread: Can anybody explain this code in details

  1. #1
    Join Date
    Sep 2012
    Thanked 0 Times in 0 Posts

    Default Can anybody explain this code in details

    Can anybody explain each lines of this code in details? I understand most of it, but I have a couple of problems with some of the logic and coding.

    class Josephus
        static class Node
          { int val; Node next;
            Node(int v) { val = v; }
        public static void main(String[] args)
          { int N = Integer.parseInt(args[0]);
            int M = Integer.parseInt(args[1]);
            Node t = new Node(1);
            Node x = t;
            for (int i = 2; i <= N; i++)
              x = (x.next = new Node(i));
            x.next = t;
            while (x != x.next)
                for (int i = 1; i < M; i++) x = x.next;
                x.next = x.next.next;
            Out.println("Survivor is " + x.val);

  2. #2
    Super Moderator pbrockway2's Avatar
    Join Date
    Jan 2012
    Thanked 206 Times in 182 Posts

    Default Re: Can anybody explain this code in details

    So, what are the problems? And what is the code supposed to do?

    And does the code compile? Hint: no, it doesn't. The compiler grumbles about Out. So, what is that all about?

    Sorry about all the questions, but it strikes me that the road to understanding isn't so much sign posted as punctuated by questioning billboards. And Josephus rocks! Although what a 0-th century historian and general was thinking about posing questions of number theory, baffles me.[COLOR="Silver"]


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