eyas-ranjous

@datastructures-js/trie

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All notable changes to this project will be documented in this file.

The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),

and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).

- `isLeaf()` to TrieNode: leaf is a node that has no children.

- `remove(word)` two edge cases that were not covered:

  1. the case when removing a word that does not exist, count should not change.

  2. the case when another word overlaps with the word being deleted, it was removing all the word chars regardless if one char is an end of another word.

  **Credit:** 王悠悠 https://github.com/anson09

- `.remove` now returns the removed word. 

- `.fromArray` static function to convert a list into a trie.

- renamed `.getWordsCount()` & `.getNodesCount()` to `.wordsCount()` & `.nodesCount()`.

  "description": "trie implementation in javascript",

    "url": "git+https://github.com/datastructures-js/trie.git"

  "author": "Eyas Ranjous <eyas.ranjous@gmail.com>",

    "url": "https://github.com/datastructures-js/trie/issues"

  "homepage": "https://github.com/datastructures-js/trie#readme",

    "eslint-config-airbnb-base": "^14.0.0",

const { TrieNode } = require('./trieNode');

    if (value === undefined || value === null) {

    for (let i = 0; i < word.length; i += 1) {

      if (!currentNode.hasChild(word[i])) {

      currentNode = currentNode.getChild(word[i]);

   * Finds a word in the trie and returns its last char node

    if (currentNode.childrenCount() > 0 || word === '') {

      if (currentNode.childrenCount() === 0) {

        currentNode.getParent().removeChild(currentNode.getChar());

      currentNode = currentNode.getParent();

   * Traverse the trie and pass words to a callback

      throw new Error('Trie.forEach expects a callback function');

    const forEachRecursive = (node = this._root, word = '') => {

      node.children().forEach((child) => {

        forEachRecursive(child, word + child.getChar());

   * Converts the trie into an array of words

    this.forEach((word) => result.push(word));

   * Converts an existing list into a trie

    values.forEach((value) => trie.insert(value));

    const childNode = new TrieNode(char);

    return this._children.get(char) || null;

		@@ -8,2 +8,14 @@ # Changelog
		## [Unreleased]
		## [4.2.0] - 2021-12-01

		### Added
		- `isLeaf()` to TrieNode: leaf is a node that has no children.

		### Fixed
		- `remove(word)` two edge cases that were not covered:
		1. the case when removing a word that does not exist, count should not change.
		2. the case when another word overlaps with the word being deleted, it was removing all the word chars regardless if one char is an end of another word.

		Credit: 王悠悠 https://github.com/anson09

		## [4.1.1] - 2021-06-20
		@@ -10,0 +22,0 @@

		{
		"name": "@datastructures-js/trie",
		"version": "4.1.1",
		"version": "4.2.0",
		"description": "trie implementation in javascript",
		@@ -29,3 +29,3 @@ "main": "index.js",
		"eslint-plugin-import": "^2.19.1",
		"grunt": "^1.0.4",
		"grunt": "^1.4.1",
		"grunt-eslint": "^22.0.0",
		@@ -32,0 +32,0 @@ "grunt-mocha-istanbul": "^5.0.2",

		@@ -124,2 +124,6 @@ /**

		if (!currentNode.isEndOfWord()) {
		return null;
		}

		if (currentNode.childrenCount() > 0 \|\| word === '') {
		@@ -131,9 +135,11 @@ currentNode.setEndOfWord(false);

		while (!currentNode.isRoot()) {
		if (currentNode.childrenCount() === 0) {
		currentNode.getParent().removeChild(currentNode.getChar());
		this._nodesCount -= 1;
		}
		do {
		currentNode.getParent().removeChild(currentNode.getChar());
		this._nodesCount -= 1;
		currentNode = currentNode.getParent();
		}
		} while (
		currentNode.isLeaf()
		&& !currentNode.isEndOfWord()
		&& !currentNode.isRoot()
		);

		@@ -140,0 +146,0 @@ this._wordsCount -= 1;

		@@ -16,2 +16,6 @@ /**

		/**
		* @public
		* @return {boolean}
		*/
		isRoot() {
		@@ -23,2 +27,10 @@ return this._char === '';
		* @public
		* @return {boolean}
		*/
		isLeaf() {
		return this._children.size === 0;
		}

		/**
		* @public
		* @returns {string}
		@@ -25,0 +37,0 @@ */

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