https://github.com/theodesp/unionfind

An idiomatic implementation of a weighted Union Find data structure with path compression in Go.
https://github.com/theodesp/unionfind

algorithms data-structures golang union-find

Last synced: 2 months ago
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An idiomatic implementation of a weighted Union Find data structure with path compression in Go.

• Host: GitHub
• URL: https://github.com/theodesp/unionfind
• Owner: theodesp
• License: mit
• Created: 2017-06-06T21:47:32.000Z (over 7 years ago)
• Default Branch: master
• Last Pushed: 2021-07-26T19:37:56.000Z (over 3 years ago)
• Last Synced: 2024-10-03T07:22:39.907Z (3 months ago)
• Topics: algorithms, data-structures, golang, union-find
• Language: Go
• Homepage: https://godoc.org/github.com/theodesp/unionfind
• Size: 6.84 KB
• Stars: 21
• Watchers: 3
• Forks: 6
• Open Issues: 4
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

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README

        
# unionfind

An idiomatic implementation of a weighted Union Find data structure with path compression in go.

## Install

`$ go get github.com/theodesp/unionfind`

## Usage

```go

// Initialize with size

uf := unionfind.New(10)

// Union a,b connects components at index a and b

uf.Union(1, 2)

uf.Union(2, 3)

uf.Union(5, 6)

uf.Union(4, 6)

fmt.PrintLn(uf.Find(2)) // Prints 1

fmt.PrintLn(uf.Connected(1, 2)) // Prints true

fmt.PrintLn(uf.Connected(1, 3)) // Prints false

```

## API

#### `uf := unionfind.New(N)`

Create a new Union Find Structure with size N.

#### `uf.Union(p, q)`

Connects p and q components.

#### `uf.Find(p)`

Attempts to find the Root component of p. Returns -1 if p is out of bounds.

#### `uf.Root(p, q)`

Same as Find.

#### `uf.Connected(p, q)`

Checks if p and q are connected.

## EXTRA

There is also a goroutine safe version of unionfind in the file `safe-unionfind`.

## Licence

MIT - Theo Despoudis