This repository covers the implementation of the most important algorithms and data structures.
This goes along with these posts series that explain each implementation in details.
We are covering the following data structures.
- Arrays: Built-in in most languages so not implemented here. Code | Details.
- Linked Lists: each data node has a link to the next (and previous). Code | Details.
- Queue: data flows in a "first-in, first-out" (FIFO) manner. Code | Details.
- Stacks: data flows in a "last-in, first-out" (LIFO) manner. Code | Details.
- Trees: data nodes has zero or more adjacent nodes a.k.a. children. Each node can only have one parent node otherwise is a graph not a tree. Code | Details
- Binary Trees: same as tree but only can have two children at most. Details
- Binary Search Trees (BST): same as binary tree, but the nodes value keep this order
left < parent < rigth. Code | Details - AVL Trees: Self-balanced BST to maximize look up time. Code | Details
- Red-Black Trees: Self-balanced BST more loose than AVL to maximize insertion speed. Code | Details
- Maps: key-value store.
- Graphs: data nodes that can have a connection or edge to zero or more adjacent nodes. Unlike trees, nodes can have multiple parents, loops. Code | Details
- Searching algorithms (WIP)
- Sorting algorithms (WIP)
Some notes while working on this project
Running one test without changing file
jest -t '#findNodeAndParent'Running one test changing code
it.only('should return with an element and its parent', () => {
// ...
});Getting some (200k+) English words are useful for testing and benchmarking.
cat /usr/share/dict/words > benchmarks/dict.txtDisabling ESLints
somthing(t) => 1 // eslint-disable-line no-unused-vars
// eslint-disable-next-line no-use-before-define
const thing = new Thing();
/*eslint-disable */
//suppress all warnings between comments
alert('foo');
/*eslint-enable */
/* eslint-disable no-alert, no-console */
alert('foo');
console.log('bar');
/* eslint-enable no-alert */