checkArrayElementsEquality.js

export function checkArrayElementsEquality (initialArray, comparedArray) {
  if (!initialArray || !comparedArray) return false
  if (initialArray.length !== comparedArray.length) return false

  const superSet = {}

  for (let i = 0; i < initialArray.length; i++) {
    const element = initialArray[i] + typeof initialArray[i]

    superSet[element] = 1
  }

  for (let i = 0; i < comparedArray.length; i++) {
    const element = comparedArray[i] + typeof comparedArray[i]

    if (!superSet[element]) return false
    superSet[element] = 2
  }

  for (const element in superSet) {
    if (superSet[element] === 1) return false
  }

  return true
}