7 lines
138 B
Groovy
7 lines
138 B
Groovy
def isPrime = {
|
|
it == 2 ||
|
|
it > 1 &&
|
|
(2..Math.max(2, (int) Math.sqrt(it))).every{ k -> it % k != 0 }
|
|
}
|
|
|
|
(0..20).grep(isPrime)
|