Worksheet AB29.1 - LinkedList

Worksheet AB29.1 - LinkedList - WORKSHEET A29.1 LinkedList...

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WORKSHEET A29.1 LinkedList 1. The following program builds on Worksheet A15.1, ArrayList that uses an ArrayList to store and perform geometric calculations on a set of coordinate points – using the Point2D.Double class. In this problem, we will use a LinkedList instead of an ArrayList to store the points. This program uses ListNode.java and SinglyLinkedList.java from the lesson, as well as the class below. import java.awt.geom.*; // for Point2D.Double class MySinglyLinkedList extends SinglyLinkedList{ // assumes the first word in the first line from SinglyLinkedList is changed from // private to protected. // Note that this method overloads printList() from SinglyLinkedList public void printList(){ ListNode temp = getFirstNode();// start from the first node while (temp != null ){ System.out.println("(" + ((Point2D.Double)temp.getValue()).getX() + "," + ((Point2D.Double)temp.getValue()).getY() + ")"); temp = temp.getNext();// go to next node } } public double calculateArea(){ // assumes points received from user form a rectangle ListNode temp = getFirstNode();// start from the first node Point2D.Double ptD = (Point2D.Double)temp.getValue();
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