Questions

questions.js

// JavaScript

strangeSequence = (num) => {
  let numbers = []
  let count = 1
  while (numbers.indexOf(num) === -1) {
    count++
    numbers.push(num)
    num = ("" + num).split("").map(num => num * num).reduce((a, b) => a + b)
  }
  return count
}

strangeSequence(16)