Here is problem solution in Python, Java, C++, C and Javascript - https://programmingoneonone.com/hackerrank-between-two-sets-problem-solution.html

I'm having trouble understanding the problem here. The explanation is extremely detailed, but I'm not 100% sure how you take 2 and 6 and end up with 6 and 12, and then 2 numbers. Very confusing explanation.

JavaScript

function getTotalX(a, b) {

  function findGcd(x, y) {
    while (y) {
      [x, y] = [y, x % y];
    }
    return x;
  }

  function findLcm(x, y) {
    return (x * y) / findGcd(x, y);
  }

  let lcm = a.reduce((acc, val) => findLcm(acc, val));

  let gcd = b.reduce((acc, val) => findGcd(acc, val));

  let count = 0;
  for (let i = lcm; i <= gcd; i += lcm) {
    if (gcd % i === 0) {
      count++;
    }
  }

  return count;
}

Here is problem solution in Python Java C++ C and Javascript - https://programmingoneonone.com/hackerrank-between-two-sets-problem-solution.html

additional code to restrict range based on inputs instead of 1 to 100; int startRange = a.get(a.size()-1); int endRange = b.get(0); for more Visit this website