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‎Chapter1/chapter1.js‎

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/*var david = {
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first_name: "David",
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last_name: "Durr"
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};
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var student1 = {
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id: "1234",
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courses: ["Programming I", "English II", "Algebra"],
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advised: false
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};
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console.log(david.last_name); // displays "Durr"
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console.log(student1["id"]); // displays "1234"
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console.log(student1.courses[1]); displays "English II"
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student1.advised = true;
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david.age = 50;*/
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function Person(first, middle, last) {
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this.first = first;
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this.middle = middle;
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this.last = last;
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this.initials = initials;
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}
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function initials() {
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return this.first[0] + this.middle[0] + this.last[0];
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}
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var aPerson = new Person("John","Quincy","Public");
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console.log("First name: " + aPerson.first);
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console.log("Middle name: " + aPerson.middle);
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console.log("Last name: " + aPerson.last);
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console.log("Initials: " + aPerson.initials());

‎Chapter10/Chap10-1.js‎

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function Node(data, left, right) {
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this.data = data;
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this.left = left;
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this.right = right;
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this.show = show;
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}
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function show() {
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return this.data;
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}
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function BST() {
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this.root = null;
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this.insert = insert;
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this.inOrder = inOrder;
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this.preOrder = preOrder;
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this.postOrder = postOrder;
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this.getmin = getmin;
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this.getmax = getmax;
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this.find = find;
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this.remove = remove;
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this.removeNode = removeNode;
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this.getSmallest = getSmallest;
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}
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function insert(data) {
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var n = new Node(data, null, null);
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if (this.root == null) {
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this.root = n;
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}
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else {
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var current = this.root;
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var parent;
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while (true) {
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parent = current;
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if (data < current.data) {
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current = current.left;
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if (current == null) {
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parent.left = n;
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break;
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}
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}
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else {
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current = current.right;
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if (current == null) {
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parent.right = n;
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break;
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}
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}
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}
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}
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}
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function inOrder(node) {
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if (!(node == null)) {
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inOrder(node.left);
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putstr(node.show() + " ");
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inOrder(node.right);
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}
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}
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function preOrder(node) {
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if (!(node == null)) {
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putstr(node.show() + " ");
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preOrder(node.left);
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preOrder(node.right);
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}
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}
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function postOrder(node) {
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if (!(node == null)) {
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postOrder(node.left);
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postOrder(node.right);
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putstr(node.show() + " ");
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}
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}
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function getmin() {
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var current = this.root;
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print("debug: " + current.data);
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while (!(current.left == null)) {
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current = current.left;
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}
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return current.data;
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}
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function getmax() {
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var current = this.root;
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while (!(current.right == null)) {
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current = current.right;
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}
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return current.data;
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}
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function find(data) {
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var current = this.root;
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while (current.data != data) {
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if (data < current.data) {
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current = current.left;
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}
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else {
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current = current.right;
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}
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if (current == null) {
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return null;
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}
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}
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return current;
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}
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function getSmallest(node) {
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if (node.left == null) {
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return node;
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}
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else {
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return getSmallest(node.left);
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}
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}
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function remove(data) {
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root = removeNode(this.root, data);
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}
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function removeNode(node, data) {
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if (node == null) {
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return null;
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}
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if (data == node.data) {
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// node has no children
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if (node.left == null && node.right == null) {
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return null;
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}
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// node has no left child
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if (node.left == null) {
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return node.right;
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}
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// node has no right child
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if (node.right == null) {
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return node.left;
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}
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// node has two children
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var tempNode = getSmallest(node.right);
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node.data = tempNode.data;
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node.right = removeNode(node.right, tempNode.data);
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return node;
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}
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else if (data < node.data) {
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node.left = removeNode(node.left, data);
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return node;
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}
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else {
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node.right = removeNode(node.right, data);
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return node;
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}
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}

‎Chapter10/Chap10-2.js‎

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load("bst.js");
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var nums = new BST();
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nums.insert(23);
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nums.insert(45);
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nums.insert(16);
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nums.insert(37);
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nums.insert(3);
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nums.insert(99);
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nums.insert(22);
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print("Inorder traversal: ");
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inOrder(nums.root);

‎Chapter10/Chap10-3.js‎

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load("bst.js");
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var nums = new BST();
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nums.insert(23);
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nums.insert(45);
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nums.insert(16);
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nums.insert(37);
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nums.insert(3);
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nums.insert(99);
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nums.insert(22);
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var min = nums.getmin();
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print("The minimum value of the BST is: " + min);
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print("\n");
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var max = nums.getmax();
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print("The maximum value of the BST is: " + max);

‎Chapter10/Chap10-4.js‎

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load("bst.js");
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var nums = new BST();
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nums.insert(23);
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nums.insert(45);
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nums.insert(16);
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nums.insert(37);
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nums.insert(3);
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nums.insert(99);
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nums.insert(22);
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inOrder(nums.root);
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print("\n");
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putstr("Enter a value to search for: ");
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var value = parseInt(readline());
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var found = nums.find(value);
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if (found != null) {
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print("Found " + value + " in the BST.");
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}
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else {
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print(value + " was not found in the BST.");
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}

‎Chapter10/Chap10-5.js‎

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load("bst.js");
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var grades = genArray(100);
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prArray(grades);
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var gradedistro = new BST();
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for (var i = 0; i < grades.length; ++i) {
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var g = grades[i];
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var grade = gradedistro.find(g);
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if (grade == null) {
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gradedistro.insert(g);
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}
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else {
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gradedistro.update(g);
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}
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}
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var cont = "y";
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while (cont == "y") {
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putstr("\n\nEnter a grade: ");
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var g = parseInt(readline());
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var aGrade = gradedistro.find(g);
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if (aGrade == null) {
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print("No occurrences of " + g);
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}
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else {
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print("Occurrences of " + g + ": " + aGrade.count);
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}
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putstr("Look at another grade (y/n)? ");
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cont = readline();
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}

‎Chapter10/Chapter9/Chap9-1.js‎

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load("set.js");
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var names = new Set();
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names.add("David");
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names.add("Jennifer");
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names.add("Cynthia");
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names.add("Mike");
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names.add("Raymond");
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if (names.add("Mike")) {
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print("Mike added");
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}
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else {
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print("Can't add Mike, must already be in set.");
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}
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print(names.show());
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var removed = "Mike";
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if (names.remove("Mike")) {
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print(removed + " removed.");
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}
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else {
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print(removed + " not removed.");
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}
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names.add("Clayton");
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print(names.show());
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removed = "Alisa";
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if (names.remove("Mike")) {
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print(removed + " removed.");
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}
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else {
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print(removed + " not removed.");
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}

‎Chapter10/Chapter9/Chap9-2.js‎

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load("set.js");
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var cis = new Set();
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cis.add("Mike");
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cis.add("Clayton");
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cis.add("Jennifer");
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cis.add("Raymond");
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var dmp = new Set();
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dmp.add("Raymond");
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dmp.add("Cynthia");
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dmp.add("Bryan");
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var it = new Set();
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it = cis.union(dmp);
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print(it.show());

‎Chapter10/Chapter9/Chap9-3.js‎

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load("set.js");
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var cis = new Set();
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cis.add("Mike");
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cis.add("Clayton");
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cis.add("Jennifer");
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cis.add("Raymond");
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var dmp = new Set();
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dmp.add("Raymond");
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dmp.add("Cynthia");
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dmp.add("Bryan");
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var inter = cis.intersect(dmp);
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print(inter.show());

‎Chapter10/Chapter9/Chap9-4.js‎

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load("set.js");
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var it = new Set();
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it.add("Cynthia");
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it.add("Clayton");
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it.add("Jennifer");
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it.add("Danny");
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it.add("Bryan");
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it.add("Terrill");
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it.add("Raymond");
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it.add("Mike");
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var dmp = new Set();
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dmp.add("Cynthia");
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dmp.add("Raymond");
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dmp.add("Bryan");
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if (dmp.subset(it)) {
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print("DMP is a subset of IT.");
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}
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else {
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print("DMP is not a subset of IT.");
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}

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