PunkSage

var Graph = function() {
  
  var nodes = {
    'a': { id: 'a', state: 'unvisited', output: ['b','c','d']},
    'b': { id: 'b', state: 'unvisited', output: ['e']},
    'c': { id: 'c', state: 'unvisited', output: ['e']},
    'd': { id: 'd', state: 'unvisited', output: ['f']},
    'e': { id: 'e', state: 'unvisited', output: ['f']},
    'f': { id: 'f', state: 'unvisited', output: ['g']},
    'g': { id: 'g', state: 'unvisited', output: []}

PunkSage

/* Verify if a given string has a proper parenthesis setup */

function verify(str) {
  var array = str.split('');
  var stack = [];
  var left = ['{','[','('];
  var right = ['}',']',')'];
  var opposite = {
    ')':'(',
    '}':'{',