@azusfin/structures

Implementations of Data Structures

API Documentation

https://azusfin.github.io/structures

Table Of Contents

• BitSet
• Uint4Array
• Int4Array

BitSet

A static-length array to work with bytes in bit-level

• Init
• Set
• Get
• Flip
• Clear

Init BitSet

import { BitSet } from "@azusfin/structures"

const bitsAmount = 64
const bitSet = new BitSet(bitsAmount)

Set Bit

const index = 31
bitSet.set(index)

Get Bit

bitSet.get(31) // true
bitSet.get(4) // false

Flip BIt

bitSet.flip(31)
bitSet.flip(4)

bitSet.get(31) // false
bitSet.get(4) // true

Clear Bit

bitSet.clear(31)
bitSet.clear(4)

bitSet.get(31) // false
bitSet.get(4) // false

Uint4Array

An array where each element occupies 4 bit unsigned integer from 0 to 15

• Init
• Set
• Get

Init Uint4Array

import { Uint4Array } from "@azusfin/structures"

const length = 8
const array = new Uint4Array(length)

Set Uint4Array

const offset = 3
array.set(offset, 12)
array.set(1, 6)
array.set(5, 3)

Get Uint4Array

array.get(offset) // 12
array.get(1) // 6
array.get(5) // 3

Int4Array

A subtype of Uint4Array with support of 4 bit signed integer from -8 to 7

• Init
• Set
• Get

Init Int4Array

import { Int4Array } from "@azusfin/structures"

const length = 8
const array = new Int4Array(length)

Set Int4Array

const offset = 3
array.set(offset, -4)
array.set(1, -8)
array.set(5, 3)

Get Int4Array

array.get(offset) // -4
array.get(1) // -8
array.get(5) // 3