Sum All Primes - pass all checks every other year

JavaScript
1

Tell us what’s happening:

I’ve passed this test without hints though last check passes every other time

Your code so far


function sumPrimes(num) {
  let arn = [];
  let nar = [];
  for (var i = 2; i <= num; i++) {
    arn.push(i);
  }
  
   for (var j = 2; j < arn.length; j++) {
     for (var k = 2; k < arn[j]; k++) {
      if (Number.isInteger(arn[j] / k)) {
       nar.push(arn[j]);
    }
     }
   }

  return arn.filter(item => !nar.includes(item)).reduce((a,b) => a+b,0);
}
sumPrimes(977);

Your browser information:

User Agent is: Mozilla/5.0 (Windows NT 6.1; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/71.0.3578.98 Safari/537.36.

Link to the challenge:
https://learn.freecodecamp.org/javascript-algorithms-and-data-structures/intermediate-algorithm-scripting/sum-all-primes

2

I think the issue is that your code is too inefficient for FCC. Try rewriting it, you can use. https://en.wikipedia.org/wiki/Sieve_of_Eratosthenes

1 Like