/**
* Author: dephraiim
* License: GPL-3.0 or later
*
* An Armstrong number is equal to the sum of its own digits each raised to the power of the number of digits.
* For example, 370 is an Armstrong number because 3*3*3 + 7*7*7 + 0*0*0 = 370.
* An Armstrong number is often called Narcissistic number.
*
*/
const armstrongNumber = (num) => {
if (num < 0 || typeof num !== 'number') return false
let newSum = 0
const numArr = num.toString().split('')
numArr.forEach((num) => {
newSum += parseInt(num) ** numArr.length
})
return newSum === num
}
export { armstrongNumber }