mirror of
https://gitea.smigz.com/smiggiddy/odin-codeprojects.git
synced 2024-12-26 06:20:42 -05:00
327 lines
8.6 KiB
JavaScript
327 lines
8.6 KiB
JavaScript
// https://github.com/TheOdinProject/curriculum/issues/27103
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class Node {
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constructor(key, value) {
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this.key = key;
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this.value = value;
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this.next = null;
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}
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}
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class LinkedList {
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constructor() {
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this.size = 0;
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this.head = null;
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this.tail = null;
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}
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append(key, value) {
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let newNode = new Node(key, value);
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if (this.head == null) {
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this.head = newNode;
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} else {
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const temp = this.head;
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this.head = newNode;
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this.head.next = temp;
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}
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if (this.tail == null) {
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this.tail = newNode;
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}
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this.size += 1;
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}
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pop() {
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if (this.head.next == null) {
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this.head = null;
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this.tail = null;
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} else {
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this.head = this.head.next;
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}
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this.size -= 1;
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}
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contains(key) {
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function searchNodes(node, key) {
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if (node.key === key) {
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return true;
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} else if (node.next == null) {
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return false;
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} else {
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return searchNodes(node.next);
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}
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}
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return searchNodes(this.head, key);
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}
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replace(key, value) {
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function replace(node) {
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if (node.key === key) {
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node.value = value;
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} else {
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return replace(node.next);
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}
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}
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replace(this.head, key);
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}
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find(key) {
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function searchNodes(node, key) {
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if (node.key === key) {
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return node.value;
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} else if (node.next == null) {
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return null;
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} else {
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return searchNodes(node.next, key);
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}
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}
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return searchNodes(this.head, key);
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}
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remove(key) {
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let lastNode = this.head;
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let currentNode = this.head;
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if (currentNode.key === key) {
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if (currentNode.next == null) {
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this.size = 0;
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this.head = null;
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this.tail = null;
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} else {
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this.size -= 1;
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this.head = this.head.next;
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}
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return true;
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}
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while (currentNode) {
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if (currentNode.key === key) {
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lastNode.next = currentNode.next;
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this.size -= 1;
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return true;
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}
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lastNode = currentNode;
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currentNode = currentNode.next;
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}
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return false;
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}
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}
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class HashMap {
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constructor(capacity = 8) {
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this.initialCapacity = capacity;
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this.capacity = capacity;
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this.buckets = Array(capacity);
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this.capacity = this.buckets.length;
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this.loadFactor = 0.75;
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}
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stringToNumber(string) {
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let hashCode = 0;
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const primeNumber = 31;
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for (let i = 0; i < string.length; i++) {
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hashCode = primeNumber * hashCode + string.charCodeAt(i);
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}
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return hashCode;
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}
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hash(key) {
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return this.stringToNumber(key);
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}
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capacityWatcher() {
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let consumed = this.buckets.filter(Object).length;
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if (consumed >= this.capacity * this.loadFactor) {
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this.capacity = Math.round(1.25 * this.capacity);
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}
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}
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set(key, value) {
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let _hash = this.hash(key);
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let bucketIndex = _hash % this.capacity;
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this.capacityWatcher();
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if (this.buckets[bucketIndex] == undefined) {
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let linkedList = new LinkedList();
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linkedList.append(key, value);
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this.buckets[bucketIndex] = linkedList;
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} else {
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let keyExists = this.buckets[bucketIndex].contains(key);
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if (keyExists) {
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this.buckets[bucketIndex].replace(key, value);
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} else {
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this.buckets[bucketIndex].append(key, value);
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}
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}
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}
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get(key) {
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for (let i = 0; i < this.buckets.length; i++) {
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if (this.buckets[i]) {
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let value = this.buckets[i].find(key);
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if (value) return value;
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}
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}
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}
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has(key) {
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for (let i = 0; i < this.buckets.length; i++) {
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if (this.buckets[i]) {
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let value = this.buckets[i].find(key);
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if (value) return true;
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}
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}
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return false;
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}
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remove(key) {
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for (let i = 0; i < this.buckets.length; i++) {
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if (this.buckets[i]) {
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let removed = this.buckets[i].remove(key);
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if (this.buckets[i].size === 0) this.buckets[i] = undefined;
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if (removed) return true;
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}
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}
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return false;
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}
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length() {
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let count = 0;
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for (let i = 0; i < this.buckets.length; i++) {
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if (this.buckets[i]) {
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count += this.buckets[i].size;
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}
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}
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return count;
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}
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clear() {
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this.capacity = this.initialCapacity;
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this.buckets = Array(this.capacity);
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}
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keys() {
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let _keys = [];
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for (let i = 0; i < this.buckets.length; i++) {
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if (this.buckets[i]) {
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let currentNode = this.buckets[i].head;
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while (currentNode) {
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_keys.push(currentNode.key);
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currentNode = currentNode.next;
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}
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}
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}
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return _keys;
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}
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values() {
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let _values = [];
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for (let i = 0; i < this.buckets.length; i++) {
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if (this.buckets[i]) {
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let currentNode = this.buckets[i].head;
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while (currentNode) {
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_values.push(currentNode.value);
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currentNode = currentNode.next;
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}
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}
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}
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return _values;
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}
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entries() {
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let _entries = [];
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for (let i = 0; i < this.buckets.length; i++) {
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if (this.buckets[i]) {
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let currentNode = this.buckets[i].head;
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while (currentNode) {
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_entries.push([currentNode.key, currentNode.value]);
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currentNode = currentNode.next;
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}
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}
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}
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return _entries;
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}
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}
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let t = new HashMap();
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// Starter Data
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t.set('football', 'redskins');
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t.set('framework', 'laptop');
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t.set('framework 2', 'sucks');
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t.set('deliver', 'me');
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t.set('alpha', 'omega');
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t.set('hello', 'world');
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t.set('hello', 'smigs');
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t.set('helo', 'world');
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t.set("omg kevin that's wild", 'world');
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t.set('mike', 'world');
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t.set('zebra', 'zoo');
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t.set('linux', 'tux');
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t.set('c major', 'c e g');
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t.remove('zebra');
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t.remove('hello');
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console.log(t.length());
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// Print the Keys
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console.log(t.keys());
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// Print the values
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console.log(t.values());
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// Print keys and values
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console.log(t.entries());
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// clear the hashmap
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t.clear();
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console.log('Stuff was cleared');
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console.log('new data set');
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t.set('football', 'redskins');
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t.set('framework', 'laptop');
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t.set('framework 2', 'sucks');
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t.set('deliver', 'me');
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t.set('alpha', 'omega');
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t.set('hello', 'world');
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t.set('hello', 'smigs');
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t.set('helo', 'world');
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t.set("omg kevin that's wild", 'world');
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t.set('mike', 'world');
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t.set('zebra', 'zoo');
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t.set('linux', 'tux');
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t.set('c major', 'c e g');
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t.set('user_role', 'DevOps Engineer');
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t.set('interests', 'Blogging, Influencing, Stocks, Generating Income');
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t.set('goals', 'Build following / grow community, Learn and grow, Technology');
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t.set('preferred_name', 'Smig');
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t.set('data_request', 'Create key value pairs for an arbitrary data set');
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t.set('format', "t.set('key', 'value')");
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t.set('entries', '30');
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t.set('entry_1', 'value_1');
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t.set('entry_2', 'value_2');
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t.set('entry_3', 'value_3');
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t.set('entry_4', 'value_4');
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t.set('entry_5', 'value_5');
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t.set('entry_6', 'value_6');
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t.set('entry_7', 'value_7');
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t.set('entry_8', 'value_8');
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t.set('entry_9', 'value_9');
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t.set('entry_10', 'value_10');
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t.set('entry_11', 'value_11');
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t.set('entry_12', 'value_12');
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t.set('entry_13', 'value_13');
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t.set('entry_14', 'value_14');
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t.set('entry_15', 'value_15');
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t.set('entry_16', 'value_16');
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t.set('entry_17', 'value_17');
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t.set('entry_18', 'value_18');
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t.set('entry_19', 'value_19');
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t.set('entry_20', 'value_20');
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t.set('entry_21', 'value_21');
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t.set('entry_22', 'value_22');
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t.set('entry_23', 'value_23');
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t.set('entry_24', 'value_24');
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t.set('entry_25', 'value_25');
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t.set('entry_26', 'value_26');
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t.set('entry_27', 'value_27');
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t.set('entry_28', 'value_28');
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t.set('entry_29', 'value_29');
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t.set('entry_30', 'value_30');
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console.log(t.keys());
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console.log(t.entries());
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