ZacharyGodfrey

function permutations(set){
	if (set.length == 0) return [];
	if (set.length == 1) return set;
	
	var values = set.filter((value, index) => set.lastIndexOf(value) == index);
	
	return values.reduce((result, value) => {
		var withoutCurrent = values.filter(x => x !== value);
		var permutationsStartingWithCurrent = permutations(withoutCurrent).map(x => [value].concat(x));
		return result.concat(permutationsStartingWithCurrent);

ZacharyGodfrey

function createPad(key, length){
	var index = 0;
	var output = "";

	while (index < length){
		var k = key.charCodeAt(index % key.length);
		var charCode = ((((k * k) ^ 101) << 4) - index) % 256;
		output += String.fromCharCode(charCode);

		index++;

ZacharyGodfrey

function isPrime(number){
	switch (true){
		// Non-integers are not prime
		case !Number.isInteger(number): return false;
			
		// Negatives, 0, and 1 are not prime
		case number < 2: return false;
			
		// Single-digit prime factor checks to reduce looping
		case number % 2 == 0: return number == 2;

ZacharyGodfrey

function hash(message){
	// Seed each output character with the first 16 prime numbers
	var seed = [
		2, 3, 5, 7,
		11, 13, 17, 19,
		23, 29, 31, 37,
		41, 43, 47, 53
	];

	// Convert each message character into its ASCII character code

ZacharyGodfrey

using System;

namespace StackImplementation
{
	public interface IStack<T>
	{
		int Depth();

		bool IsEmpty();

ZacharyGodfrey

// Convert a decimal number to a string of Roman numerals
function toRomanNumerals(number){
	var repeat = (times, str) => Array(times).fill(str).join("");

	return repeat(number, "I")
		// 1e1
		.replace(new RegExp(repeat(10, "I"), "gi"), "X") // 10
		.replace(new RegExp(repeat(9, "I"), "gi"), "IX") // 9
		.replace(new RegExp(repeat(5, "I"), "gi"), "V") // 5
		.replace(new RegExp(repeat(4, "I"), "gi"), "IV") // 4

ZacharyGodfrey

// On the first tab, we need to hijack any links that would open in a new tab
// and open them with JavaScript so that we can store a reference to the newly opened tab

// Vanilla JavaScript
Array.from(document.querySelectorAll("a[target='_blank']")).forEach(function(a){
	a.addEventListener("click", function(e){
		e.preventDefault();
		e.stopPropagation();

		window.newTabReference = window.open(a.attributes.href, "_blank");

ZacharyGodfrey

// Runs <fn> immediately if not run in the last <ms> milliseconds
// Skips execution of <fn> otherwise
function debounce(fn, ms) {
    var lastRun = 0;

    return function () {
        var now = new Date().getTime();

        if (now - ms >= lastRun) {
            lastRun = now;

ZacharyGodfrey

private T TryCatchWrap<T>(Func<T> action, T defaultValue)
{
    try
    {
        return action();
    }
    catch (Exception e)
    {
        // Log the exception somewhere
        return defaultValue;

ZacharyGodfrey

// Factory Function pattern of object creation
function newUser(id, first, last){
	// Validation of inputs happens in only one place - the constructor
	if (typeof id !== "number") throw new Error("Invalid ID");
	if (typeof first !== "string") throw new Error("Invalid FirstName");
	if (typeof last !== "string") throw new Error("Invalid LastName");

	return {
		// Getters return the values used to create the object
		get ID(){ return id },