Skip to content

Instantly share code, notes, and snippets.

@nerdybeast
Created November 6, 2016 21:34
Show Gist options
  • Save nerdybeast/6c83215780e95a346dba6131bcc406b4 to your computer and use it in GitHub Desktop.
Save nerdybeast/6c83215780e95a346dba6131bcc406b4 to your computer and use it in GitHub Desktop.
Euler 8 - Largest Product in a Series
'use strict';const MAX = 13;const n = `    73167176531330624919225119674426574742355349194934    96983520312774506326239578318016984801869478851843    85861560789112949495459501737958331952853208805511    12540698747158523863050715693290963295227443043557    66896648950445244523161731856403098711121722383113    62229893423380308135336276614282806444486645238749    30358907296290491560440772390713810515859307960866    70172427121883998797908792274921901699720888093776    65727333001053367881220235421809751254540594752243    52584907711670556013604839586446706324415722155397    53697817977846174064955149290862569321978468622482    83972241375657056057490261407972968652414535100474    82166370484403199890008895243450658541227588666881    16427171479924442928230863465674813919123162824586    17866458359124566529476545682848912883142607690042    24219022671055626321111109370544217506941658960408    07198403850962455444362981230987879927244284909188    84580156166097919133875499200524063689912560717606    05886116467109405077541002256983155200055935729725    71636269561882670428252483600823257530420752963450`;//Replace all non-digits to remove white space and return characters.let array = n.replace(/\D/g, '').split('');let largestMultiple = { value: 0 };for(let i = 0; i <= (array.length - MAX); i++) {    let digits = array.slice(i, MAX + i);    //If any of the digits are a 0 then advance the loop since our multiplication will simply equal 0;    if(digits.includes('0')) { continue; }    let value = digits.reduce((prev, next) => { return prev * Number(next); }, 1);    let key = digits.join('');    if(value > largestMultiple.value) {        largestMultiple = { key, value };    }}console.log(`${largestMultiple.key} => ${largestMultiple.value}`);
Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment