text: /*
   The four adjacent digits in the 1000-digit number that have the greatest product are 9 × 9 × 8 × 9 = 5832.
  
   73167176531330624919225119674426574742355349194934
   96983520312774506326239578318016984801869478851843
   85861560789112949495459501737958331952853208805511
   12540698747158523863050715693290963295227443043557
   66896648950445244523161731856403098711121722383113
   62229893423380308135336276614282806444486645238749
   30358907296290491560440772390713810515859307960866
   70172427121883998797908792274921901699720888093776
   65727333001053367881220235421809751254540594752243
   52584907711670556013604839586446706324415722155397
   53697817977846174064955149290862569321978468622482
   83972241375657056057490261407972968652414535100474
   82166370484403199890008895243450658541227588666881
   16427171479924442928230863465674813919123162824586
   17866458359124566529476545682848912883142607690042
   24219022671055626321111109370544217506941658960408
   07198403850962455444362981230987879927244284909188
   84580156166097919133875499200524063689912560717606
   05886116467109405077541002256983155200055935729725
   71636269561882670428252483600823257530420752963450
  
   Find the thirteen adjacent digits in the 1000-digit number that have the greatest product.
   What is the value of this product?
   */
  
  var euler8 = function () {
      //Master number is greater than Javascript's infinity, so it needs to be a string. Lame.
      var master = '73167176531330624919225119674426574742355349194934' +
          '96983520312774506326239578318016984801869478851843' +
          '85861560789112949495459501737958331952853208805511' +
          '12540698747158523863050715693290963295227443043557' +
          '66896648950445244523161731856403098711121722383113' +
          '62229893423380308135336276614282806444486645238749' +
          '30358907296290491560440772390713810515859307960866' +
          '70172427121883998797908792274921901699720888093776' +
          '65727333001053367881220235421809751254540594752243' +
          '52584907711670556013604839586446706324415722155397' +
          '53697817977846174064955149290862569321978468622482' +
          '83972241375657056057490261407972968652414535100474' +
          '82166370484403199890008895243450658541227588666881' +
          '16427171479924442928230863465674813919123162824586' +
          '17866458359124566529476545682848912883142607690042' +
          '24219022671055626321111109370544217506941658960408' +
          '07198403850962455444362981230987879927244284909188' +
          '84580156166097919133875499200524063689912560717606' +
          '05886116467109405077541002256983155200055935729725' +
          '71636269561882670428252483600823257530420752963450';
      var masterArray = master.split('');
      var targetAdjDigits = 13;
      var maxProduct = 0;
      var adjDigits = [];
      var max = 0;
  
      masterArray.forEach(function (currentNumber, index) {
          adjDigits = masterArray.slice(index, index+targetAdjDigits);
  
          max = adjDigits.reduce(function (previousValue, currentValue) {
              return previousValue * currentValue;
          });
  
          if (max > maxProduct) {
              maxProduct = max;
          }
      });
  
      console.log(maxProduct);
  };
  
  var start = Date.now();
  euler8();
  console.log('Time elapsed: ' + (Date.now() - start) + 'ms');
  