package main

import (
	student "student"

	"lib"
	"lib/is"
)

func findPrevPrime(nb int) int {
	if nb < 2 {
		return 0
	}
	if is.Prime(nb) {
		return nb
	}
	return findPrevPrime(nb - 1)
}

func main() {
	elems := append(lib.MultRandIntBetween(0, 99999), 5, 4, 1)
	for _, elem := range elems {
		lib.Challenge("FindPrevPrime", student.FindPrevPrime, findPrevPrime, elem)
	}
}