Average method in java Add an average method to the MyLinkedListL3 class in the

Question

Average method in java Add an average method to the MyLinkedListL3 class in the program showing below. your average method should return the average of all the x data on the list. if the list is null, your average method should throws a MyLinkedListException. your average method should return a double value. test it against null list and non-null list. { public static void main(String[] args) { MyLinkedListL3 list = new MyLinkedListL3(); list.addFirst(1); list.addFirst(2); list.addFirst(3); System.out.println("Numbers on list"); list.traverse(); } } //============================================== class MyLinkedListL3 // copy of MyLinkedList in Fig. 15.4 { private class Node { private Node link; private int x; } //---------------------------------- private Node first = null; //---------------------------------- public void addFirst(int d) { Node newNode = new Node(); newNode.x = d; newNode.link = first; first = newNode; } //---------------------------------- public void traverse() { Node p = first; while (p != null) { System.out.println(p.x); p = p.link; } } }

Explanation / Answer

public double(List list) { double avg = 0; if(list.size() == 0) { throw new MyLinkedListException(); } else { int n=0, sum =0; for(MyLinkedListL3 temp: list) { sum = sum + temp.getX(); n++; } avg = (double)sum/n; } return avg; }

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