Cousin primes: Difference between revisions
Content added Content deleted
Alextretyak (talk | contribs) (Added 11l) |
|||
| Line 18: | Line 18: | ||
:* the MathWorld entry: [https://mathworld.wolfram.com/CousinPrimes.html cousin primes]. |
:* the MathWorld entry: [https://mathworld.wolfram.com/CousinPrimes.html cousin primes]. |
||
<br><br> |
<br><br> |
||
=={{header|11l}}== |
|||
{{trans|Nim}} |
|||
<lang 11l>V LIMIT = 1000 |
|||
F isPrime(n) |
|||
I (n [&] 1) == 0 |
|||
R n == 2 |
|||
V m = 3 |
|||
L m * m <= n |
|||
I n % m == 0 |
|||
R 0B |
|||
m += 2 |
|||
R 1B |
|||
V PrimeList = (2 .< LIMIT).filter(n -> isPrime(n)) |
|||
V PrimeSet = Set(PrimeList) |
|||
V cousinList = PrimeList.filter(n -> (n + 4) C PrimeSet).map(n -> (n, n + 4)) |
|||
print(‘Found #. cousin primes less than #.:’.format(cousinList.len, LIMIT)) |
|||
L(cousins) cousinList |
|||
print(String(cousins).center(10), end' I (L.index + 1) % 7 == 0 {"\n"} E ‘ ’) |
|||
print()</lang> |
|||
{{out}} |
|||
<pre> |
|||
Found 41 cousin primes less than 1000: |
|||
(3, 7) (7, 11) (13, 17) (19, 23) (37, 41) (43, 47) (67, 71) |
|||
(79, 83) (97, 101) (103, 107) (109, 113) (127, 131) (163, 167) (193, 197) |
|||
(223, 227) (229, 233) (277, 281) (307, 311) (313, 317) (349, 353) (379, 383) |
|||
(397, 401) (439, 443) (457, 461) (463, 467) (487, 491) (499, 503) (613, 617) |
|||
(643, 647) (673, 677) (739, 743) (757, 761) (769, 773) (823, 827) (853, 857) |
|||
(859, 863) (877, 881) (883, 887) (907, 911) (937, 941) (967, 971) |
|||
</pre> |
|||
=={{header|Ada}}== |
=={{header|Ada}}== |
||