treemap-js

TreeMap.js

A binary tree based map (aka dictionary) data type for Javascript, keeping keys sorted at all times. Provides O(log n) average case performance for inserting, retrieving and removing values.

Installation

Works with Node and in the browser.

Node

Install via npm install treemap-js. Then access the TreeMap like this:

const TreeMap = require("treemap-js");

Browser

Include TreeMap.js in your HTML. TreeMap is automatically appended to the window object.

Usage

var map = new TreeMap();

map.set("my first key", "hello");    // keys can be strings, numbers or booleans. Values can be any data type
map.set("second key", [ 1, 3, 4 ]);
map.get("my first key");    // returns "hello"

map.set("my first key", 2342);
map.get("my first key");    // returns 2342

map.getLength();    //  returns 2

map.getMinKey();    // returns "my first key"
map.getMaxKey();    // returns "second key"

map.each(function (value, key) {
    // do something...
});

map.remove("my first key");
map.getLength();    // returns 1

map.getTree();    // returns the backing tree object