data-structure-typed

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Why

Do you envy C++ with STL (std::), Python with collections, and Java with java.util ? Well, no need to envy anymore! JavaScript and TypeScript now have data-structure-typed.Benchmark compared with C++ STL. API standards aligned with ES6 and Java. Usability is comparable to Python

We provide data structures that are not available in JS/TS

Heap, Binary Tree, RedBlack Tree, Linked List, Deque, Trie, Directed Graph, Undirected Graph, BST, AVL Tree, Priority Queue, Queue, Tree Multiset, Linked List.

Performance surpasses that of native JS/TS

Method	Time Taken (ms)	Scale	Belongs To
Queue.push & shift	5.83	100,000	data-structure-typed
Array.push & shift	2829.59	100,000	Native JS
Deque.unshift & shift	2.44	100,000	data-structure-typed
Array.unshift & shift	4750.37	100,000	Native JS
HashMap.set	122.51	1,000,000	data-structure-typed
Map.set	223.80	1,000,000	Native JS
Set.add	185.06	1,000,000	Native JS

Installation and Usage

Now you can use it in Node.js and browser environments

CommonJS:require export.modules =

ESModule:   import export

Typescript:   import export

UMD:           var Deque = dataStructureTyped.Deque

npm

npm i data-structure-typed --save

yarn

yarn add data-structure-typed

import {
  BinaryTree, Graph, Queue, Stack, PriorityQueue, BST, Trie, DoublyLinkedList,
  AVLTree, MinHeap, SinglyLinkedList, DirectedGraph, TreeMultimap,
  DirectedVertex, AVLTreeNode
} from 'data-structure-typed';

CDN

Copy the line below into the head tag in an HTML document.

development

<script src='https://cdn.jsdelivr.net/npm/data-structure-typed/dist/umd/data-structure-typed.js'></script>

production

<script src='https://cdn.jsdelivr.net/npm/data-structure-typed/dist/umd/data-structure-typed.min.js'></script>

Copy the code below into the script tag of your HTML, and you're good to go with your development.

const {Heap} = dataStructureTyped;
const {
  BinaryTree, Graph, Queue, Stack, PriorityQueue, BST, Trie, DoublyLinkedList,
  AVLTree, MinHeap, SinglyLinkedList, DirectedGraph, TreeMultimap,
  DirectedVertex, AVLTreeNode
} = dataStructureTyped;

Vivid Examples

Binary Tree

Try it out, or you can run your own code using our visual tool

Binary Tree DFS

Try it out

AVL Tree

Try it out

Tree Multi Map

Try it out

Matrix

Try it out

Directed Graph

Try it out

Map Graph

Try it out

Code Snippets

Binary Search Tree (BST) snippet

TS

import {BST, BSTNode} from 'data-structure-typed';

const bst = new BST<number>();
bst.add(11);
bst.add(3);
bst.addMany([15, 1, 8, 13, 16, 2, 6, 9, 12, 14, 4, 7, 10, 5]);
bst.size === 16;                // true
bst.has(6);                     // true
const node6 = bst.getNode(6);   // BSTNode
bst.getHeight(6) === 2;         // true
bst.getHeight() === 5;          // true
bst.getDepth(6) === 3;          // true

bst.getLeftMost()?.key === 1;   // true

bst.delete(6);
bst.get(6);                     // undefined
bst.isAVLBalanced();            // true
bst.bfs()[0] === 11;            // true
bst.print()
//       ______________11_____           
//      /                     \          
//   ___3_______            _13_____
//  /           \          /        \    
//  1_     _____8____     12      _15__
//    \   /          \           /     \ 
//    2   4_       _10          14    16
//          \     /                      
//          5_    9
//            \                          
//            7

const objBST = new BST<number, {height: number, age: number}>();

objBST.add(11, { "name": "Pablo", "age": 15 });
objBST.add(3, { "name": "Kirk", "age": 1 });

objBST.addMany([15, 1, 8, 13, 16, 2, 6, 9, 12, 14, 4, 7, 10, 5], [
    { "name": "Alice", "age": 15 },
    { "name": "Bob", "age": 1 },
    { "name": "Charlie", "age": 8 },
    { "name": "David", "age": 13 },
    { "name": "Emma", "age": 16 },
    { "name": "Frank", "age": 2 },
    { "name": "Grace", "age": 6 },
    { "name": "Hannah", "age": 9 },
    { "name": "Isaac", "age": 12 },
    { "name": "Jack", "age": 14 },
    { "name": "Katie", "age": 4 },
    { "name": "Liam", "age": 7 },
    { "name": "Mia", "age": 10 },
    { "name": "Noah", "age": 5 }
  ]
);

objBST.delete(11);

JS

const {BST, BSTNode} = require('data-structure-typed');

const bst = new BST();
bst.add(11);
bst.add(3);
bst.addMany([15, 1, 8, 13, 16, 2, 6, 9, 12, 14, 4, 7, 10, 5]);
bst.size === 16;                // true
bst.has(6);                     // true
const node6 = bst.getNode(6);
bst.getHeight(6) === 2;         // true
bst.getHeight() === 5;          // true
bst.getDepth(6) === 3;          // true
const leftMost = bst.getLeftMost();
leftMost?.key === 1;            // true

bst.delete(6);
bst.get(6);                     // undefined
bst.isAVLBalanced();            // true or false
const bfsIDs = bst.bfs();
bfsIDs[0] === 11;               // true

AVLTree snippet

import {AVLTree} from 'data-structure-typed';

const avlTree = new AVLTree<number>();
avlTree.addMany([11, 3, 15, 1, 8, 13, 16, 2, 6, 9, 12, 14, 4, 7, 10, 5])
avlTree.isAVLBalanced();    // true
avlTree.delete(10);
avlTree.isAVLBalanced();    // true

RedBlackTree snippet

import {RedBlackTree} from 'data-structure-typed';

const rbTree = new RedBlackTree<number>();
rbTree.addMany([11, 3, 15, 1, 8, 13, 16, 2, 6, 9, 12, 14, 4, 7, 10, 5])
rbTree.isAVLBalanced();    // true
rbTree.delete(10);
rbTree.isAVLBalanced();    // true
rbTree.print()
//         ___6________
//        /            \
//      ___4_       ___11________
//     /     \     /             \
//    _2_    5    _8_       ____14__
//   /   \       /   \     /        \
//   1   3       7   9    12__     15__
//                            \        \
//                           13       16

Directed Graph simple snippet

import {DirectedGraph} from 'data-structure-typed';

const graph = new DirectedGraph<string>();

graph.addVertex('A');
graph.addVertex('B');

graph.hasVertex('A');       // true
graph.hasVertex('B');       // true
graph.hasVertex('C');       // false

graph.addEdge('A', 'B');
graph.hasEdge('A', 'B');    // true
graph.hasEdge('B', 'A');    // false

graph.deleteEdgeSrcToDest('A', 'B');
graph.hasEdge('A', 'B');    // false

graph.addVertex('C');

graph.addEdge('A', 'B');
graph.addEdge('B', 'C');

const topologicalOrderKeys = graph.topologicalSort(); // ['A', 'B', 'C']

Undirected Graph snippet

import {UndirectedGraph} from 'data-structure-typed';

const graph = new UndirectedGraph<string>();
graph.addVertex('A');
graph.addVertex('B');
graph.addVertex('C');
graph.addVertex('D');
graph.deleteVertex('C');
graph.addEdge('A', 'B');
graph.addEdge('B', 'D');

const dijkstraResult = graph.dijkstra('A');
Array.from(dijkstraResult?.seen ?? []).map(vertex => vertex.key) // ['A', 'B', 'D']

Free conversion between data structures.

const orgArr = [6, 1, 2, 7, 5, 3, 4, 9, 8];
const orgStrArr = ["trie", "trial", "trick", "trip", "tree", "trend", "triangle", "track", "trace", "transmit"];
const entries = [[6, 6], [1, 1], [2, 2], [7, 7], [5, 5], [3, 3], [4, 4], [9, 9], [8, 8]];

const queue = new Queue(orgArr);
queue.print();      
// [6, 1, 2, 7, 5, 3, 4, 9, 8]

const deque = new Deque(orgArr);
deque.print();      
// [6, 1, 2, 7, 5, 3, 4, 9, 8]

const sList = new SinglyLinkedList(orgArr);
sList.print();      
// [6, 1, 2, 7, 5, 3, 4, 9, 8]

const dList = new DoublyLinkedList(orgArr);
dList.print();      
// [6, 1, 2, 7, 5, 3, 4, 9, 8]

const stack = new Stack(orgArr);
stack.print();      
// [6, 1, 2, 7, 5, 3, 4, 9, 8]

const minHeap = new MinHeap(orgArr);
minHeap.print();    
// [1, 5, 2, 7, 6, 3, 4, 9, 8]

const maxPQ = new MaxPriorityQueue(orgArr);
maxPQ.print();      
// [9, 8, 4, 7, 5, 2, 3, 1, 6]

const biTree = new BinaryTree(entries);
biTree.print();
//         ___6___
//        /       \
//     ___1_     _2_
//    /     \   /   \
//   _7_    5   3   4
//  /   \
//  9   8

const bst = new BST(entries);
bst.print();
//     _____5___
//    /         \
//   _2_       _7_
//  /   \     /   \
//  1   3_    6   8_
//        \         \
//        4         9


const rbTree = new RedBlackTree(entries);
rbTree.print();
//     ___4___
//    /       \
//   _2_     _6___
//  /   \   /     \
//  1   3   5    _8_
//              /   \
//              7   9


const avl = new AVLTree(entries);
avl.print();
//     ___4___
//    /       \
//   _2_     _6___
//  /   \   /     \
//  1   3   5    _8_
//              /   \
//              7   9

const treeMulti = new TreeMultimap(entries);
treeMulti.print();
//     ___4___
//    /       \
//   _2_     _6___
//  /   \   /     \
//  1   3   5    _8_
//              /   \
//              7   9

const hm = new HashMap(entries);
hm.print()    
// [[6, 6], [1, 1], [2, 2], [7, 7], [5, 5], [3, 3], [4, 4], [9, 9], [8, 8]]

const rbTreeH = new RedBlackTree(hm);
rbTreeH.print();
//     ___4___
//    /       \
//   _2_     _6___
//  /   \   /     \
//  1   3   5    _8_
//              /   \
//              7   9

const pq = new MinPriorityQueue(orgArr);
pq.print();   
// [1, 5, 2, 7, 6, 3, 4, 9, 8]

const bst1 = new BST(pq);
bst1.print();
//     _____5___
//    /         \
//   _2_       _7_
//  /   \     /   \
//  1   3_    6   8_
//        \         \
//        4         9

const dq1 = new Deque(orgArr);
dq1.print();    
// [6, 1, 2, 7, 5, 3, 4, 9, 8]
const rbTree1 = new RedBlackTree(dq1);
rbTree1.print();
//    _____5___
//   /         \
//  _2___     _7___
// /     \   /     \
// 1    _4   6    _9
//      /         /
//      3         8


const trie2 = new Trie(orgStrArr);
trie2.print();    
// ['trie', 'trial', 'triangle', 'trick', 'trip', 'tree', 'trend', 'track', 'trace', 'transmit']
const heap2 = new Heap(trie2, { comparator: (a, b) => Number(a) - Number(b) });
heap2.print();    
// ['transmit', 'trace', 'tree', 'trend', 'track', 'trial', 'trip', 'trie', 'trick', 'triangle']
const dq2 = new Deque(heap2);
dq2.print();      
// ['transmit', 'trace', 'tree', 'trend', 'track', 'trial', 'trip', 'trie', 'trick', 'triangle']
const entries2 = dq2.map((el, i) => [i, el]);
const avl2 = new AVLTree(entries2);
avl2.print();
//     ___3_______
//    /           \
//   _1_       ___7_
//  /   \     /     \
//  0   2    _5_    8_
//          /   \     \
//          4   6     9

API docs & Examples

API Docs

Live Examples

Examples Repository

Data Structures

Data Structure	Unit Test	Performance Test	API Docs
Binary Tree			View
Binary Search Tree (BST)			View
AVL Tree			View
Red Black Tree			View
Tree Multimap			View
Heap			View
Priority Queue			View
Max Priority Queue			View
Min Priority Queue			View
Trie			View
Graph			View
Directed Graph			View
Undirected Graph			View
Queue			View
Deque			View
Hash Map			View
Linked List			View
Singly Linked List			View
Doubly Linked List			View
Stack			View
Segment Tree			View
Binary Indexed Tree			View

Standard library data structure comparison

Data Structure Typed	C++ STL	java.util	Python collections
Heap<E>	priority_queue<T>	PriorityQueue<E>	heapq
Deque<E>	deque<T>	ArrayDeque<E>	deque
Queue<E>	queue<T>	Queue<E>	-
HashMap<K, V>	unordered_map<K, V>	HashMap<K, V>	defaultdict
DoublyLinkedList<E>	list<T>	LinkedList<E>	-
SinglyLinkedList<E>	-	-	-
BinaryTree<K, V>	-	-	-
BST<K, V>	-	-	-
RedBlackTree<E>	set<T>	TreeSet<E>	-
RedBlackTree<K, V>	map<K, V>	TreeMap<K, V>	-
TreeMultimap<K, V>	multimap<K, V>	-	-
TreeMultimap<E>	multiset<T>	-	-
Trie	-	-	-
DirectedGraph<V, E>	-	-	-
UndirectedGraph<V, E>	-	-	-
PriorityQueue<E>	priority_queue<T>	PriorityQueue<E>	-
Array<E>	vector<T>	ArrayList<E>	list
Stack<E>	stack<T>	Stack<E>	-
HashMap<E>	unordered_set<T>	HashSet<E>	set
-	unordered_multiset	-	Counter
LinkedHashMap<K, V>	-	LinkedHashMap<K, V>	OrderedDict
-	unordered_multimap<K, V>	-	-
-	bitset<N>	-	-

Built-in classic algorithms

Algorithm	Function Description	Iteration Type
Binary Tree DFS	Traverse a binary tree in a depth-first manner, starting from the root node, first visiting the left subtree, and then the right subtree, using recursion.	Recursion + Iteration
Binary Tree BFS	Traverse a binary tree in a breadth-first manner, starting from the root node, visiting nodes level by level from left to right.	Iteration
Graph DFS	Traverse a graph in a depth-first manner, starting from a given node, exploring along one path as deeply as possible, and backtracking to explore other paths. Used for finding connected components, paths, etc.	Recursion + Iteration
Binary Tree Morris	Morris traversal is an in-order traversal algorithm for binary trees with O(1) space complexity. It allows tree traversal without additional stack or recursion.	Iteration
Graph BFS	Traverse a graph in a breadth-first manner, starting from a given node, first visiting nodes directly connected to the starting node, and then expanding level by level. Used for finding shortest paths, etc.	Recursion + Iteration
Graph Tarjan's Algorithm	Find strongly connected components in a graph, typically implemented using depth-first search.	Recursion
Graph Bellman-Ford Algorithm	Finding the shortest paths from a single source, can handle negative weight edges	Iteration
Graph Dijkstra's Algorithm	Finding the shortest paths from a single source, cannot handle negative weight edges	Iteration
Graph Floyd-Warshall Algorithm	Finding the shortest paths between all pairs of nodes	Iteration
Graph getCycles	Find all cycles in a graph or detect the presence of cycles.	Recursion
Graph getCutVertexes	Find cut vertices in a graph, which are nodes that, when removed, increase the number of connected components in the graph.	Recursion
Graph getSCCs	Find strongly connected components in a graph, which are subgraphs where any two nodes can reach each other.	Recursion
Graph getBridges	Find bridges in a graph, which are edges that, when removed, increase the number of connected components in the graph.	Recursion
Graph topologicalSort	Perform topological sorting on a directed acyclic graph (DAG) to find a linear order of nodes such that all directed edges go from earlier nodes to later nodes.	Recursion

Software Engineering Design Standards

Principle	Description
Practicality	Follows ES6 and ESNext standards, offering unified and considerate optional parameters, and simplifies method names.
Extensibility	Adheres to OOP (Object-Oriented Programming) principles, allowing inheritance for all data structures.
Modularization	Includes data structure modularization and independent NPM packages.
Efficiency	All methods provide time and space complexity, comparable to native JS performance.
Maintainability	Follows open-source community development standards, complete documentation, continuous integration, and adheres to TDD (Test-Driven Development) patterns.
Testability	Automated and customized unit testing, performance testing, and integration testing.
Portability	Plans for porting to Java, Python, and C++, currently achieved to 80%.
Reusability	Fully decoupled, minimized side effects, and adheres to OOP.
Security	Carefully designed security for member variables and methods. Read-write separation. Data structure software does not need to consider other security aspects.
Scalability	Data structure software does not involve load issues.

Benchmark

avl-tree

test name	time taken (ms)	executions per sec	sample deviation
10,000 add randomly	51.22	19.52	0.00
10,000 add & delete randomly	110.40	9.06	0.00
10,000 addMany	58.39	17.13	6.35e-4
10,000 get	50.59	19.77	3.87e-4

binary-tree

test name	time taken (ms)	executions per sec	sample deviation
1,000 add randomly	13.83	72.29	1.19e-4
1,000 add & delete randomly	21.49	46.54	2.34e-4
1,000 addMany	15.93	62.78	1.27e-4
1,000 get	18.19	54.98	1.79e-4
1,000 has	18.20	54.93	1.71e-4
1,000 dfs	161.79	6.18	7.45e-4
1,000 bfs	56.68	17.64	4.77e-4
1,000 morris	262.64	3.81	0.00

bst

test name	time taken (ms)	executions per sec	sample deviation
10,000 add randomly	51.51	19.41	8.70e-4
10,000 add & delete randomly	114.09	8.76	9.66e-4
10,000 addMany	47.86	20.90	2.77e-4
10,000 get	51.93	19.26	6.56e-4

rb-tree

test name	time taken (ms)	executions per sec	sample deviation
100,000 add	86.63	11.54	0.00
100,000 add & delete randomly	218.88	4.57	0.01
100,000 getNode	261.16	3.83	0.00
100,000 add & iterator	117.64	8.50	0.00

comparison

test name	time taken (ms)	executions per sec	sample deviation
SRC PQ 10,000 add	0.14	6949.20	1.53e-6
CJS PQ 10,000 add	0.14	6943.68	1.74e-6
MJS PQ 10,000 add	0.57	1758.40	6.26e-6
SRC PQ 10,000 add & pop	3.40	293.94	3.50e-5
CJS PQ 10,000 add & pop	3.42	292.69	5.34e-5
MJS PQ 10,000 add & pop	3.30	303.01	3.97e-5

directed-graph

test name	time taken (ms)	executions per sec	sample deviation
1,000 addVertex	0.10	9930.74	1.11e-6
1,000 addEdge	6.13	163.19	1.84e-4
1,000 getVertex	0.05	2.15e+4	5.00e-7
1,000 getEdge	23.57	42.43	0.00
tarjan	252.05	3.97	0.03
tarjan all	221.15	4.52	0.00
topologicalSort	181.07	5.52	0.00

hash-map

test name	time taken (ms)	executions per sec	sample deviation
1,000,000 set	122.90	8.14	0.04
Native Map 1,000,000 set	215.97	4.63	0.02
Native Set 1,000,000 add	179.11	5.58	0.02
1,000,000 set & get	123.10	8.12	0.04
Native Map 1,000,000 set & get	271.80	3.68	0.02
Native Set 1,000,000 add & has	176.65	5.66	0.02
1,000,000 ObjKey set & get	341.97	2.92	0.07
Native Map 1,000,000 ObjKey set & get	316.86	3.16	0.04
Native Set 1,000,000 ObjKey add & has	285.14	3.51	0.06

heap

test name	time taken (ms)	executions per sec	sample deviation
100,000 add & pop	80.37	12.44	0.00
100,000 add & dfs	36.20	27.63	0.00
10,000 fib add & pop	362.24	2.76	0.00

doubly-linked-list

test name	time taken (ms)	executions per sec	sample deviation
1,000,000 push	216.09	4.63	0.06
1,000,000 unshift	220.68	4.53	0.02
1,000,000 unshift & shift	172.93	5.78	0.04
1,000,000 insertBefore	332.25	3.01	0.08

singly-linked-list

test name	time taken (ms)	executions per sec	sample deviation
1,000,000 push & shift	222.99	4.48	0.10
10,000 push & pop	214.82	4.66	0.01
10,000 insertBefore	251.24	3.98	0.01

max-priority-queue

test name	time taken (ms)	executions per sec	sample deviation
10,000 refill & poll	8.91	112.19	1.57e-4

priority-queue

test name	time taken (ms)	executions per sec	sample deviation
100,000 add & pop	101.70	9.83	0.00

deque

test name	time taken (ms)	executions per sec	sample deviation
1,000,000 push	13.80	72.47	1.56e-4
1,000,000 push & pop	22.72	44.02	2.02e-4
100,000 push & shift	2.35	425.67	5.80e-5
Native Array 100,000 push & shift	2511.14	0.40	0.36
100,000 unshift & shift	2.23	447.89	3.30e-4
Native Array 100,000 unshift & shift	4140.23	0.24	0.33

queue

test name	time taken (ms)	executions per sec	sample deviation
1,000,000 push	43.65	22.91	0.01
100,000 push & shift	4.99	200.28	9.54e-5
Native Array 100,000 push & shift	2335.63	0.43	0.33
Native Array 100,000 push & pop	4.39	227.81	0.00

stack

test name	time taken (ms)	executions per sec	sample deviation
1,000,000 push	45.38	22.04	0.01
1,000,000 push & pop	49.52	20.19	0.01

trie

test name	time taken (ms)	executions per sec	sample deviation
100,000 push	42.99	23.26	0.00
100,000 getWords	89.78	11.14	0.00