https://github.com/alexprut/algo

🍒 Classic Algorithms and Data Structures implemented in Java
https://github.com/alexprut/algo
algorithm algorithms data-structures java
Last synced: 11 days ago
JSON representation
🍒 Classic Algorithms and Data Structures implemented in Java
Host: GitHub
URL: https://github.com/alexprut/algo
Owner: alexprut
License: mit
Created: 2018-10-03T23:01:13.000Z (over 6 years ago)
Default Branch: master
Last Pushed: 2024-05-07T10:53:46.000Z (about 1 year ago)
Last Synced: 2025-04-06T05:51:11.884Z (about 1 month ago)
Topics: algorithm, algorithms, data-structures, java
Language: Java
Homepage:
Size: 583 KB
Stars: 14
Watchers: 2
Forks: 2
Open Issues: 0
Metadata Files:
- Readme: README.md
- License: LICENSE
Awesome Lists containing this project

README

        















Classic Algorithms and Data Structures implemented in Java


[![Code Style](https://img.shields.io/badge/code%20style-google-green.svg?style=flat-square)](https://google.github.io/styleguide/javaguide.html)

[![MIT](https://img.shields.io/dub/l/vibe-d.svg)](https://github.com/alexprut/Algo/blob/master/LICENSE)

![Build Status](https://github.com/alexprut/Algo/actions/workflows/build.yml/badge.svg)

[![GitHub release](https://img.shields.io/github/release/alexprut/Algo.svg)](https://github.com/alexprut/Algo/releases)

[![Maven Central](https://img.shields.io/maven-central/v/com.alexprut/algo.svg)](https://search.maven.org/artifact/com.alexprut/algo)






Algorithms

==========

|Algorithm|Worst-case time complexity|Average-case time complexity|Best-case time complexity|Auxiliary space complexity|

|:---|:---|:---|:---|:---|

|[Insertion Sort](https://github.com/alexprut/Algo/blob/master/src/main/java/com/alexprut/algo/algorithms/sorting/InsertionSort.java)|Θ(n^2)|Θ(n^2)|O(n)|-|

|[BubbleSort](https://github.com/alexprut/Algo/blob/master/src/main/java/com/alexprut/algo/algorithms/sorting/BubbleSort.java)|O(n^2)|O(n^2)|O(n)|-|

|[MergeSort](https://github.com/alexprut/Algo/blob/master/src/main/java/com/alexprut/algo/algorithms/sorting/MergeSort.java)|Θ(nlogn)|Θ(nlogn)|Θ(nlogn)|-|

|[HeapSort](https://github.com/alexprut/Algo/blob/master/src/main/java/com/alexprut/algo/datastructures/MaxHeap.java#L82)|Θ(nlogn)|-|-|-|

|[QuickSort](https://github.com/alexprut/Algo/blob/master/src/main/java/com/alexprut/algo/algorithms/sorting/QuickSort.java)|Θ(n^2)|Θ(nlogn)|Θ(nlogn)|-|

|[CountingSort](https://github.com/alexprut/Algo/blob/master/src/main/java/com/alexprut/algo/algorithms/sorting/CountingSort.java)|Θ(k + n)|Θ(k + n)|Θ(n)|Θ(n)|

|[RadixSort](https://github.com/alexprut/Algo/blob/master/src/main/java/com/alexprut/algo/algorithms/sorting/RadixSort.java)|Θ(d(k + n))|Θ(d(k + n))|Θ(n)|-|

|[Floyd-Warshall](https://github.com/alexprut/Algo/blob/master/src/main/java/com/alexprut/algo/algorithms/graph/FloydWarshall.java)|Θ(V^3)|Θ(V^3)|Θ(V^3)|Θ(V^2)|

|[Kruskal](https://github.com/alexprut/Algo/blob/master/src/main/java/com/alexprut/algo/algorithms/graph/mst/Kruskal.java)|O(\|E\|log\|V\|)|-|-|-|

|[Prim](https://github.com/alexprut/Algo/blob/master/src/main/java/com/alexprut/algo/algorithms/graph/mst/Prim.java)|O(\|E\| + \|V\|log\|V\||-|-|-|

|[Bellman–Ford](https://github.com/alexprut/Algo/blob/master/src/main/java/com/alexprut/algo/algorithms/graph/BellmanFord.java)|Θ(\|E\|\|V\|)|-|-|Θ(V)|

|[Dijkstra](https://github.com/alexprut/Algo/blob/master/src/main/java/com/alexprut/algo/algorithms/graph/Dijkstra.java)|O(\|E\| + \|V\|log\|V\|)|-|-|-|

|[Maximum SubArray](https://github.com/alexprut/Algo/blob/master/src/main/java/com/alexprut/algo/algorithms/MaximumSubArray.java)|Θ(n)|Θ(n)|Θ(n)|Θ(1)|

|[Knuth-Morris-Pratt](https://github.com/alexprut/Algo/blob/master/src/main/java/com/alexprut/algo/algorithms/KnuthMorrisPratt.java)|Θ(n + m)|Θ(n)|Θ(n)|Θ(n)|

|[Rabin-Karp](https://github.com/alexprut/Algo/blob/master/src/main/java/com/alexprut/algo/algorithms/RabinKarp.java)|Θ((n - m + 1)m)|Θ(n)|Θ(n)|-|

|[Greatest common divisor (GCD)](https://github.com/alexprut/Algo/blob/master/src/main/java/com/alexprut/algo/algorithms/math/Math.java#L13)|-|-|-|-|

|[Binary Search](https://github.com/alexprut/Algo/blob/master/src/main/java/com/alexprut/algo/algorithms/search/BinarySearch.java)|O(nlogn)|O(nlogn)|O(1)|Θ(1)|

|[Breadth First Search (BFS)](https://github.com/alexprut/Algo/blob/master/src/main/java/com/alexprut/algo/algorithms/search/BreadthFirstSearch.java#L43)|O(\|E\|+\|V\|)|O(\|E\|+\|V\|)|-|-|

|[Depth First Search (DFS)](https://github.com/alexprut/Algo/blob/master/src/main/java/com/alexprut/algo/algorithms/search/DepthFirstSearch.java#L10)|O(\|E\|+\|V\|)|O(\|E\|+\|V\|)|-|-|

|[Topological Sort (DFS)](https://github.com/alexprut/Algo/blob/master/src/main/java/com/alexprut/algo/algorithms/search/DepthFirstSearch.java#L91)|O(\|E\|+\|V\|)|O(\|E\|+\|V\|)|-|-|

|[Longest Increasing Subsequence (LIS)](https://github.com/alexprut/Algo/blob/master/src/main/java/com/alexprut/algo/Utils.java#L98)|Θ(n^2)|-|-|Θ(n)|

|[Longest Common Subsequence (LCS)](https://github.com/alexprut/Algo/blob/master/src/main/java/com/alexprut/algo/Utils.java#L128)|Θ(n^2)|-|-|Θ(n^2)|

Data Structures

===============

|Data Structure|Methods|

|--------------|-------|

|[Max Heap](https://github.com/alexprut/Algo/blob/master/src/main/java/com/alexprut/algo/datastructures/MaxHeap.java)|```max()``` - Θ(1), ```extractMax()``` - O(nlogn), ```increaseKey()``` - O(logn), ```insert()``` - O(logn), ```heapify()``` - O(logn), ```heapsort()``` - O(nlogn)|

|[Min Heap](https://github.com/alexprut/Algo/blob/master/src/main/java/com/alexprut/algo/datastructures/MinHeap.java)|```min()``` - Θ(1), ```extractMin()``` - O(nlogn), ```insert()``` - O(logn), ```heapify()``` - O(logn), ```heapsort()``` - O(nlogn)|

|[MinMax Heap](https://github.com/alexprut/Algo/blob/master/src/main/java/com/alexprut/algo/datastructures/MinMaxHeap.java)|```min()``` - Θ(1), ```max()``` - Θ(1), ```extractMin()``` - O(nlogn), ```extractMax()``` - O(nlogn), ```insert()``` - O(logn), ```heapify()``` - O(logn)|

|[Disjoint Set](https://github.com/alexprut/Algo/blob/master/src/main/java/com/alexprut/algo/datastructures/DisjointSet.java)|```makeSet()``` - Θ(1), ```findSet()``` - Θ(1), ```union()``` - Θ(1)|

|[Trie](https://github.com/alexprut/Algo/blob/master/src/main/java/com/alexprut/algo/datastructures/Trie.java)|```insert()``` - O(\|s\|), ```search()``` - O(\|s\|), ```searchPrefix()``` - O(\|s\|), ```remove()``` - O(\|s\|), ```size()``` - O(1)|

|[Stack](https://github.com/alexprut/Algo/blob/master/src/main/java/com/alexprut/algo/datastructures/Stack.java)|```push()``` - Θ(1), ```pop()``` - Θ(1), ```empty()``` - Θ(1), ```size()``` - Θ(1), ```peek()``` - Θ(1)|

|[Queue](https://github.com/alexprut/Algo/blob/master/src/main/java/com/alexprut/algo/datastructures/Queue.java)|```enqueue()``` - Θ(1), ```dequeue()``` - Θ(1), ```empty()``` - Θ(1), ```size()``` - Θ(1)|

|[Binary Search Tree](https://github.com/alexprut/Algo/blob/master/src/main/java/com/alexprut/algo/datastructures/BinarySearchTree.java)|```insert()``` - O(n), ```search()``` - O(n), ```delete()``` - O(n), ```contains()``` - O(n), ```minimum()``` - O(n), ```maximum()``` - O(n), ```size()``` - Θ(1), ```successor()``` - O(logn), ```predecessor()``` - O(logn), ```preOrderVisit()``` - O(n), ```inOrderVisit()``` - O(n), ```postOrderVisit()``` - O(n)|

|[Double Linked List](https://github.com/alexprut/Algo/blob/master/src/main/java/com/alexprut/algo/datastructures/DoubleLinkedList.java)|```insertFront()``` - Θ(1), ```removeFront()``` - Θ(1), ```insertBack()``` - Θ(1), ```removeBack()``` - Θ(1), ```head()``` - Θ(1), ```size()``` - Θ(1), ```search()``` - Θ(n), ```remove()``` - Θ(n)|

|[Linked List](https://github.com/alexprut/Algo/blob/master/src/main/java/com/alexprut/algo/datastructures/LinkedList.java)|```insertFront()``` - Θ(1), ```removeFront()``` - Θ(1), ```head()``` - Θ(1), ```size()``` - Θ(1), ```search()``` - Θ(n), ```remove()``` - Θ(n)|

|[Skip List](https://github.com/alexprut/Algo/blob/master/src/main/java/com/alexprut/algo/datastructures/SkipList.java)| ```insert()``` - Θ(logn), ```remove()``` - Θ(logn), ```search()``` - O(logn), ```size()``` - Θ(1)|

|[Graph](https://github.com/alexprut/Algo/blob/master/src/main/java/com/alexprut/algo/datastructures/Graph.java)|```buildAdjacencyMatrix()``` - Θ(\|V\|^2), ```buildAdjacencyList()``` - Θ(\|V\| + \|E\|), ```addEdge()``` - Θ(1)|

|[Red-Black Tree](https://github.com/alexprut/Algo/blob/master/src/main/java/com/alexprut/algo/datastructures/RedBlackTree.java)|```insert()``` - O(logn), ```search()``` - O(logn), ```delete()``` - O(logn), ```minimum()``` - O(logn), ```maximum()``` - O(logn), ```successor()``` - O(logn), ```predecessor()``` - O(logn)|

|[Interval Tree](https://github.com/alexprut/Algo/blob/master/src/main/java/com/alexprut/algo/datastructures/IntervalTree.java)|```insert()``` - O(logn), ```search()``` - O(logn), ```find()``` - O(logn), ```findAll()``` - O(n), ```delete()``` - O(logn), ```minimum()``` - O(logn), ```maximum()``` - O(logn), ```successor()``` - O(logn), ```predecessor()``` - O(logn)|

|[Segment Tree](https://github.com/alexprut/Algo/blob/master/src/main/java/com/alexprut/algo/datastructures/SegmentTree.java)|```build()``` - O(n), ```update()``` - O(logn), ```search()``` - O(logn)|

|[AVL Tree](https://github.com/alexprut/Algo/blob/master/src/main/java/com/alexprut/algo/datastructures/AVLTree.java)|```insert()``` - O(logn), ```search()``` - O(logn), ```delete()``` - O(logn), ```minimum()``` - O(logn), ```maximum()``` - O(logn), ```successor()``` - O(logn)|

|[B-Tree](https://github.com/alexprut/Algo/blob/master/src/main/java/com/alexprut/algo/datastructures/BTree.java)|```insert()``` - O(th), ```search()``` - O(th), ```delete()``` - O(th), ```successor()``` - O(th), ```predecessor()``` - O(th)|

|[QuadTree](https://github.com/alexprut/Algo/blob/master/src/main/java/com/alexprut/algo/datastructures/QuadTree.java)|```insert()``` - O(logn), ```search()``` - O(logn), ```delete()``` - O(logn), ```size()``` - Θ(1)|

|[Fibonacci Heap](https://github.com/alexprut/Algo/blob/master/src/main/java/com/alexprut/algo/datastructures/FibonacciHeap.java)|```insert()``` - O(1), ```minimum()``` - O(1), ```extractMin()``` - O(logn), ```decreaseKey()``` - O(1), ```delete()``` - O(logn)|

|[Merkle Tree](https://github.com/alexprut/Algo/blob/master/src/main/java/com/alexprut/algo/datastructures/MerkleTree.java)|```build()``` - O(n), ```verify()``` - O(logn), ```getProofPath()``` - O(logn)|

|[Bloom Filter](https://github.com/alexprut/Algo/blob/master/src/main/java/com/alexprut/algo/datastructures/BloomFilter.java)|```search()``` - O(k), ```insert()``` - O(k)|

---

### Add to your build

To add a dependency using Gradle, use the following:

```

implementation 'com.alexprut:algo:v0.4.0'

```

To add a dependency using Gradle Kotlin DSL:

```

implementation("com.alexprut:algo:v0.4.0")

```

To add a dependency using Maven:

```

  com.alexprut

  algo

  v0.4.0

```

#### Requirements

- Gradle 8

- Java 11

### Build

```

./gradlew clean build

```

### Test

```

./gradlew test

```

### Formatting style

```

./gradlew goJF

```

```

./gradlew verGJF

```

### Generate Changelog

```

git-chglog v1.0.0..v2.0.0

```

License

=======

Licensed under [MIT](https://github.com/alexprut/Algo/blob/master/LICENSE).
ecosyste.ms

Data

Tools

Indexes

Applications

Experiments

Awesome

https://github.com/alexprut/algo

Awesome Lists containing this project

README

Classic Algorithms and Data Structures implemented in Java
