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#!/usr/bin/env -S nim r -d:release --verbosity:0 --hints:off
import std/[sequtils, math]
proc isColorFul(number: int): bool =
let digits = ($number).mapIt(it.ord - '0'.ord)
var uniq: set[int16]
template testUniq(n: int16) =
if n in uniq:
return false
uniq.incl n
for winLen in 1..digits.len:
for ind in 0 .. digits.len - winLen:
let product = digits.toOpenArray(ind, ind + winLen - 1).prod()
testUniq(int16 product)
true
proc allColorful3Digits*(): seq[int] =
for i in 100..999:
if i.isColorFul():
result.add i
when isMainModule:
echo "All colorful 3-digit numbers: ", allColorful3Digits()
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