Find fifth largest element in the array. Don't use any native sort methods

fifth_largest.js

const fifth_largest = (array) => {
  const cache = []
  let highest = -Infinity
  let highest_index = -1

  for (var i = 0; i < 5; i++) {

    for (var index = 0; index < array.length; index++) {
      if (array[index] > highest) {
        highest = array[index]
        highest_index = index
      }
    }

    cache.push(highest)
    array[highest_index] = -Infinity

    highest = -Infinity
    highest_index = -1
  }

  return cache[cache.length -1]
}