From 3ffc76713f6db4c33f20588ce6896ea3c2bae2a7 Mon Sep 17 00:00:00 2001 From: Charles Date: Sat, 17 Aug 2019 21:39:43 +0200 Subject: wip directory for each language --- wip/053-combinatoric-selections.c | 43 --------------------------------------- 1 file changed, 43 deletions(-) delete mode 100644 wip/053-combinatoric-selections.c (limited to 'wip/053-combinatoric-selections.c') diff --git a/wip/053-combinatoric-selections.c b/wip/053-combinatoric-selections.c deleted file mode 100644 index 9006f5a..0000000 --- a/wip/053-combinatoric-selections.c +++ /dev/null @@ -1,43 +0,0 @@ -#include -#include - - -typedef long long unsigned int Natural; - -Natural factorial(Natural n) -{ - if (n == 1 || n == 0) return 1; - else return n * factorial(n - 1); -} - -Natural combination(Natural n, Natural r) -{ - if (r > n) exit(1); - Natural num = 0; - /* for (Natural i = 0; i < r - 1; i++) */ - /* num *= n - i; */ - /* return num / factorial(r); */ - /* if (factorial(r) * factorial(n - r) == 0) return 0; */ - return (factorial(n) / (factorial(r) * factorial(n - r))); - /* return (factorial(r) * factorial(n - r)); */ -} - -int main(void) -{ - printf("10! = %llu\n", factorial(10)); - printf("23! = %llu\n", factorial(23)); - printf("(23 - 10)! = %llu\n", factorial(23 - 10)); - int counter = 0; - Natural comb = 0, n, r; - /* for (n = 1; n <= 24; n++) */ - /* for (r = 1; r <= n; r++) { */ - /* comb = combination(n, r); */ - /* if (comb > 1000000) { */ - /* counter++; */ - /* comb = combination(23, 10); */ - printf("%llu C %llu = %llu\n", n, r, comb); - /* } */ - /* } */ - printf("counter = %d", counter); - return 0; -} -- cgit