Mark Robson roppa

How to make a script to run in your terminal

Locate the path to the interpreter for the language you are writing in with the which command.
```
  which node
  which python
  which bash
  which ruby
```
Add that path as an interpreter directive (using #!) on the first line of your script. For example if which node returned /usr/local/bin/node, the first line of your script should be:

Studying for a Tech Interview Sucks, so Here's a Cheat Sheet to Help

This list is meant to be a both a quick guide and reference for further research into these topics. It's basically a summary of that comp sci course you never took or forgot about, so there's no way it can cover everything in depth. It also will be available as a gist on Github for everyone to edit and add to.

Data Structure Basics

Array

Definition:

Stores data elements based on an sequential, most commonly 0 based, index.
Based on tuples from set theory.

	#!/usr/bin/env node

	const fs = require('fs');
	const path = require('path');

	const from = JSON.parse(fs.readFileSync(path.resolve(process.argv[2])).toString());
	const to = path.resolve(process.argv[3]);
	const jsonPath = process.argv[4].split('.');

	function getValueFromPaths(paths, object) {

	const net = require('net');

	const PORT = 6000;

	const server = net.createServer((connection) => {
	console.log('created server');
	connection.on('data', (data) => {
	connection.write('pong\n');
	});
	connection.pipe(connection);

	set autoindent
	set indentexpr=off
	set expandtab
	set tabstop=4

	set sw=4
	set textwidth=80
	set nohls
	set noshowmatch
	syntax enable

	'use strict';

	/**
	* Run through promises sequentially. Useful when breaking 1000s records into manageable chunks
	*/

	function processFile (filename) {

	return new Promise((superResolve, superReject) => {

	const flatten = (...args) => {
	let result = [];
	args.forEach(arg => {
	if (Array.isArray(arg)) {
	arg.forEach(element => {
	if (Array.isArray(element)) {
	result = result.concat(flatten(element));
	} else {
	result.push(element);
	}

	function countLetters (string) {
	let letters = {};
	for (let i = 0; i < string.length; i++) {
	letters[string[i]] = letters[string[i]] + 1 \|\| 1;
	}
	return letters;
	}

	let seating = (people) => {

	let result = [];

	(function permutations (left, right) {

	let current;
	let before
	let after;