Answered: A Node class is defined below. In the…

Computer Networking: A Top-Down Approach (7th Edition)

7th Edition

ISBN:9780133594140

Author:James Kurose, Keith Ross

Publisher:James Kurose, Keith Ross

Chapter1: Computer Networks And The Internet

Section: Chapter Questions

Problem R1RQ: What is the difference between a host and an end system? List several different types of end...

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The numbers on the left margin denote line numbers. line#01 class LL_node {02 int val;03 LL_node next;04 public LL_node (int n) {05 val = n;06 next = null;07 }08 public void set_next (LL_node nextNode) {09 next = nextNode;10 }11 public LL_node get_next () {12 return next;13 }14 public void set_value (int input) {15 val = input;16 }17 public int get_value () {18 return val;19 }20 }21 public class LL {22 protected LL_node head;23 protected LL_node tail;24 public LL () {25 head = null;26 tail = null;27 }28 public int append (int n) {29 if (head == null) {30 head = new LL_node(n);31 tail = head;32 } else {33 LL_node new_node;34 new_node = new LL_node(n);35 tail.set_next (new_node);36 tail = new_node;37 }38 return n;39 }40 } which the following statement…
Implement LeafNode and InteriorNode classes for the expression tree as discussed on this page Use this template: Please don't change any function namesAdd any methods if necesssaryTODO: Remove the pass statements and implement the methods. '''class LeafNode:def __init__(self, data):self.data = datadef postfix(self):return str(self)def __str__(self):return str(self.data)def prefix(self):passdef infix(self):passdef value(self):return self.dataclass InteriorNode:def __init__(self, op, left_op, right_op):self.op = opself.left_op = left_opself.right_op = right_opdef postfix(self):return self.left_op.postfix() + " " + self.right_op.postfix() + " " + self.opdef prefix(self):passdef infix(self):passdef value(self):passif __name__ == "__main__":# TODO: (Optional) your test code here.a = LeafNode(4)b = InteriorNode('+', LeafNode(2), LeafNode(3))c = InteriorNode('*', a, b)c = InteriorNode('-', c, b)
class BSTNode { int key; BSTNode left, right; public BSTNode(int item) { key = item; left = right = null; } } class BST_Tree { BSTNode root; BST_Tree() { // Constructor root = null; } boolean search(int key){ return (searchRec(root, key) != null); } public BSTNode searchRec(BSTNode root, int key) { if (root==null || root.key==key) return root; if (root.key > key) return searchRec(root.left, key); return searchRec (root.right, key); } void deleteKey(int key) { root = deleteRec(root, key); } /* A recursive function to insert a new key in BST */ BSTNode deleteRec(BSTNode root, int key) { /* Base Case: If the tree is empty */ if (root == null) return root; /* Otherwise, recur down the tree */ if (key < root.key)…
Redesign LaptopList class from previous project public class LaptopList { private class LaptopNode //inner class { public String brand; public double price; public LaptopNode next; public LaptopNode(String brand, double price) { // add your code } public String toString() { // add your code } } private LaptopNode head; // head of the linked list public LaptopList(String fname) throws IOException { File file = new File(fname); Scanner scan = new Scanner(file); head = null; while(scan.hasNextLine()) { // scan data // create LaptopNode // call addToHead and addToTail alternatively } } private void addToHead(LaptopNode node) { // add your code } private void addToTail(LaptopNode node) { // add your code } private…
class BSTNode { int key; BSTNode left, right; public BSTNode(int item) { key = item; left = right = null; } } class BST_Tree { BSTNode root; BST_Tree() { // Constructor root = null; } boolean search(int key){ return (searchRec(root, key) != null); } public BSTNode searchRec(BSTNode root, int key) { if (root==null || root.key==key) return root; if (root.key > key) return searchRec(root.left, key); return searchRec (root.right, key); } void deleteKey(int key) { root = deleteRec(root, key); } /* A recursive function to insert a new key in BST */ BSTNode deleteRec(BSTNode root, int key) { /* Base Case: If the tree is empty */ if (root == null) return root; /* Otherwise, recur down the tree */ if (key < root.key)…
Explain the following code : public static void printLeafNodes(TreeNode node) { // base case if (node == null) { return; } if (node.left == null && node.right == null) { System.out.printf("%d ", node.value); } printLeafNodes(node.left); printLeafNodes(node.right); }

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