Happy number resolution

happy-number.js

// http://dojopuzzles.com/problemas/exibe/numeros-felizes/

const numberToAssert = 7

//************************

let iterationLimit = 200

const assertHappiness = input => {

  const numbersArray = input.toString().split('')
  const squaredArray = numbersArray.map(number => number * number)
  const result = squaredArray.reduce((acc, item) => acc + item, 0)
  const isInputHappy = parseInt(result, 10) === 1

  if (iterationLimit === 0) {
    return `${numberToAssert} is a sad number`
  }

  if (isInputHappy) {
    return `${numberToAssert} is a happy number`
  }

  iterationLimit--
  return assertHappiness(result)
}

console.log(
  assertHappiness(numberToAssert)
)