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Thread: Sorting a doubly linked list

  1. #1
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    Default Sorting a doubly linked list

    Hey,

    I'm trying to sort a doubly linked list using the "bubbles source" sort.

    It's not working good

    Someone can help me? What's I'm doing wrong?

    		boolean sorted = false;
    		car carA = list.getHead();
    		car carB = list.getHead().getNext();
     
    		while (!sorted) {
     
    			sorted = true;
    			while (carA != getLastcar(list).getPrev()) {
    				sorted = false;
     
    				if (carA.greaterThan(carB, sumEnum)) {
    					swap(list, carA, carB);				
    				}
     
    				car tempcarB = carB;
    				carB = carA.getNext();
    				carA = tempcarB.getNext();
    		}
     
     
    public static void swap(carList list, car carA, car carB) {
     
    	car carBPointed2 = carB.getNext();
    	car carAPreved2 = carA.getPrev();
     
    	carB.setNext(carA);
    	carA.setNext(carBPointed2);
     
    	carB.setPrev(carAPreved2);
    	carA.setPrev(carB);
     
    	carA.getNext().setPrev(carA);
     
    	if (carB.getPrev() == null) {
    		list.setHead(carB);
    	}
     
    }


  2. #2
    Administrator copeg's Avatar
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    Default Re: Sorting a doubly linked list

    Can you define 'not working good'? What do you put in, and what do you get out? Are there any exceptions? In situations like this it helps to post a short, compilable, and runnable example which demonstrates the problem.

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