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manhlab
2021-04-07 19:25:18 -04:00
parent fda7245f7c
commit 436de2efd6
8576 changed files with 1013325 additions and 3 deletions

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module fsieve
import StdClass; // RWS
import StdInt, StdReal
NrOfPrimes :== 3000
primes :: [Int]
primes = pr where pr = [5 : sieve 7 4 pr]
sieve :: Int !Int [Int] -> [Int]
sieve g i prs
| isPrime prs g (toInt (sqrt (toReal g))) = [g : sieve` g i prs]
| otherwise = sieve (g + i) (6 - i) prs
sieve` :: Int Int [Int] -> [Int]
sieve` g i prs = sieve (g + i) (6 - i) prs
isPrime :: [Int] !Int Int -> Bool
isPrime [f:r] pr bd
| f>bd = True
| pr rem f==0 = False
| otherwise = isPrime r pr bd
select :: [x] Int -> x
select [f:r] 1 = f
select [f:r] n = select r (n - 1)
Start :: Int
Start = select [2, 3 : primes] NrOfPrimes