func main() {
sum := 0
for i := 1; i < 1000; i++ {
if misc.IsMultiple(i, 3) || misc.IsMultiple(i, 5) {
sum += i
}
}
fmt.Println(sum)
}
func collatz(n int) int {
if misc.IsMultiple(n, 2) {
return n / 2
} else {
return 3*n + 1
}
}
func main() {
sum := 0
for _, n := range misc.FibList(limit) {
if misc.IsMultiple(n, 2) {
sum += n
}
}
fmt.Println(sum)
}
func findLargestPrimeFactor(n int) int {
nextPrime := misc.GetPrimesIterator(n)
for prime := nextPrime(); prime > 0; prime = nextPrime() {
if misc.IsMultiple(n, prime) {
fmt.Println("Prime factor: ", prime)
quotient := n / prime
if !misc.IsPrime(quotient) {
return findLargestPrimeFactor(quotient)
} else {
return quotient
}
}
}
return -1
}
func isLeapYear(year int) bool {
return misc.IsMultiple(year, 4) &&
(!misc.IsMultiple(year, 100) || misc.IsMultiple(year, 400))
}