Greatest common divisor/pl: what changed
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| 1 | 1 | Największy wspólny dzielnik | |
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| 3 | + | Największym wspólnym dzielnikiem dwóch liczb całkowitych jest największa liczba całkowita, która dzieli je obie bez reszty. Jeśli liczby wynoszą 121 i 143, to największy wspólny dla nich dzielnik wynosi 11. | |
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| 5 | + | Istnieje wiele metod obliczania największego wspólnego dzielnika dwóch liczb. Można na przykład zaprogramować wersję algorytmu Euklidesa opartego na dzieleniu: | |
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| 11 | 7 | ## `function greatestCommonDivisor` | |
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| 8 | + | ``` | |
| 14 | 9 | function greatestCommonDivisor(a, b: Int64): Int64; | |
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| 10 | + | var | |
| 11 | + | temp: Int64; | |
| 12 | + | begin | |
| 13 | + | while b <> 0 do | |
| 14 | + | begin | |
| 15 | + | temp := b; | |
| 16 | + | b := a mod b; | |
| 17 | + | a := temp | |
| 18 | + | end; | |
| 19 | + | result := a | |
| 20 | + | end; | |
| 21 | + | ||
| 22 | + | function greatestCommonDivisor_euclidsSubtractionMethod(a, b: Int64): Int64; | |
| 23 | + | begin | |
| 24 | + | // działa tylko z dodatnimi liczbami całkowitymi | |
| 25 | + | if (a < 0) then a := -a; | |
| 26 | + | if (b < 0) then b := -b; | |
| 27 | + | // nie wchodź do pętli warunkowej, ponieważ odjęcie zera sprawi, że nie będzie mogła zostać przerwana | |
| 28 | + | if (a = 0) then exit(b); | |
| 29 | + | if (b = 0) then exit(a); | |
| 30 | + | while not (a = b) do | |
| 31 | + | begin | |
| 32 | + | if (a > b) then | |
| 33 | + | a := a - b | |
| 34 | + | else | |
| 35 | + | b := b - a; | |
| 36 | + | end; | |
| 37 | + | result := a; | |
| 38 | + | end; | |
| 44 | 39 | ``` | |
| 45 | 40 | ||
| 46 | 41 | ## Zobacz także | |
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| 43 | + | * [[Least common multiple|Najmniejsza wspólna wielokrotność]] | |
| 44 | + | * [[Mod|Operator `mod`]] | |
| 45 | + | * `mpz_gcd` in [[gmp|GMP]] (GNU multiple precision) | |
| 51 | 46 | ||
| 52 | 47 | ## zewnętrzne odnośniki | |
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| 49 | + | * [Przykład rekurencyjny](<https://rosettacode.org/wiki/Greatest_common_divisor#Pascal_.2F_Delphi_.2F_Free_Pascal>) | |
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| 56 | 51 | --- | |
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| 52 | + | *From the Free Pascal wiki, page "Greatest common divisor/pl", as the Internet Archive kept it on 2025-02-08, last changed on 2024-07-28. Copyright stays with the author who wrote it, according to the old wiki's [[Licensing]] page. If you have concerns about this material, [message the admin](/wiki-contact).* |
