5kyu_Beeramid.js

// 5kyu - Beeramid

// Let's pretend your company just hired your friend from college and paid you 
// a referral bonus. Awesome! To celebrate, you're taking your team out to the 
// terrible dive bar next door and using the referral bonus to buy, and build, 
// the largest three-dimensional beer can pyramid you can. And then probably drink 
// those beers, because let's pretend it's Friday too.

// A beer can pyramid will square the number of cans in each level - 1 can in the 
// top level, 4 in the second, 9 in the next, 16, 25...

// Complete the beeramid function to return the number of complete levels of a 
// beer can pyramid you can make, given the parameters of:

// 1) your referral bonus, and

// 2) the price of a beer can

// For example:

// beeramid(1500, 2); // should === 12
// beeramid(5000, 3); // should === 16

var beeramid = function(bonus, price) {
  let beers = ~~(bonus / price), num = 0;
  while(beers >= num * num)
    beers -= num * num++;
  return num > 0 ? num - 1 : 0;
}