Recall the IntegerList ADT whose interface is reproduced below. (Comments are in

Question

Recall the IntegerList ADT whose interface is reproduced below. (Comments are included to remind you what each method does.) public interface IntegerListinterface public boolean isEmpty: 17 return true iff list has no elements public int size ) public int get (int index)7 return list element at index public void add (int index, int newItem): 17 insert newItem at index public void remove (int index); 1/ delete element at index public void removeAll 0: 1/ reset list to empty state // return number of elements in list 1. Write a static void method called swap with the following heading that interchanges the items currently in positions i and j of the list. Use only the ADT operations above to do this. static void swap (IntegerList list, int i, int j)

Explanation / Answer

static void swap(IntegerListInterface list, int i, int j) { int value = list.get(i); list.remove(i); list.add(i, list.get(j)); list.remove(j); list.add(j, value); }

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