class LinkedList { Node head;  Node tail;  Node findNodeWithData(int data);  void addDataAfterNode(int data, Node noderef); }  class Node { private int data;  private Node next; public void setNextNode(data); public Node getNextNode();  } 2. What JUnit test cases will you create for the LinkedList class:  a. void findNodeWithData(int data);  b. addDataAfterNode(); 3. Write your JUnit test case for testing the two methods above

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Convex Hull

For a given set of points S in a plane, the convex hull is a line completely enclosing all the points within the plane such that no concavities are left. In other words, the convex hull of a set of points is the smallest convex polygon consisting of all points within the plane.