avl-binary-tree

Self-balancing binary search tree.

Install

npm i avl-binary-tree
// or
yarn add avl-binary-tree

API

• new AVLTree(options:object):AVLTree - Constructor.

Options

• comparator:function - [optional] Compare two values.
• path:string - [optional] - When value in tree is object use param path to define keys path e.g. 'foo.bar'. If it use become default value to all paths in methods. Can be overwrite in method param.

Comparator

Default compare function

function compare (a, b) {
  return a < b
}

Methods

• insert(key:any) - Insert value to tree.
• insertArray(key:array) - Insert array to tree.
• getHeight():number - Return height of tree.
• getMinValue():any - Return the smallest value of tree. Depends from comparator. If value of left root is smaller than right root value.
• getMaxValue():any - Return the biggest value of tree. Depends from comparator. If value of left root is smaller than right root value.
• find(value:any, [path:string]):boolean - Return true when value was found, false if not. When value in tree is object use param path to define key's path e.g. 'foo.bar'.
• delete(value:any, [path:string]) - Delete root with input value. path works similar to functions find.

Examples

import AVLTree from 'avl-binary-tree';
const tree = new AVLTree()

Comparator

const tree = new AVLTree({
    comparator: (a, b) => a < b
  })

Methods

• insert(key:any) - Insert value to tree

tree.insert(1)
tree.insert(3)

• insertArray(key:array) - Insert array to tree.

const a = [1, 2]
tree.insertArray(a)

• getHeight():number - Return height of tree

tree.getHeight()

• getMinValue():any - Return the smallest value of tree. Depends from comparator. If value of left root is smaller than right root value.

tree.getMinValue()

• getMaxValue():any - Return the biggest value of tree. Depends from comparator. If value of left root is smaller than right root value.

tree.getMaxValue()

• find(value:any, [path:string]):boolean - Return true when value was found, false if not. When value in tree is object use param path to define keys path e.g. 'foo.bar'.

tree.find(8, 'foo.bar')

• delete(value:any, [path:string]) - Delete root with input value. path works similar to functions find.

tree.delete(8, 'foo.bar')