# Running this through benchy:
import std/math
import std/strutils
import std/sequtils

func isArmstrongNumber1(n: int): bool =
  var total, exponent = 0
  let digits: int = n.float32.log10.ceil.int
  while 10 ^ exponent < n:
    total += (n div (10 ^ exponent) mod 10) ^ digits
    exponent += 1
  n == total

func isArmstrongNumber2(n: int): bool =
  n == ($n).foldl(a + parseInt($b) ^ len($n), 0)

import benchy

timeIt("numbers only"):
  var total = 0
  for i in 1..10_000:
    if i.isArmstrongNumber1: inc total

timeIt("via string"):
  var total = 0
  for i in 1..10_000:
    if i.isArmstrongNumber2: inc total