1000.primes.each_cons(4, {|*a| if (a.diffs == [2, 4, 2]) { say a } })
[5, 7, 11, 13] [11, 13, 17, 19] [101, 103, 107, 109] [191, 193, 197, 199] [821, 823, 827, 829]
Last updated 10 months ago