Update derangement.hxx

Mrezadwiprasetiawan · web-flow · commit ba73a3320d0e · 2025-05-09T12:03:47.000+07:00
lupa ngasih tanda *
diff --git a/discrete/include/derangement.hxx b/discrete/include/derangement.hxx
@@ -6,5 +6,5 @@ std::enable_if_t<std::is_arithmetic_v<T>>
 derangement(T n){
   if (!n) return 1;
   if (n==1) return 0;
-  return (n-1)(derangement(n-1)+derangement(n-2));
+  return (n-1)*(derangement(n-1)+derangement(n-2));
 }

Original file line number	Diff line number	Diff line change
`@@ -6,5 +6,5 @@ std::enable_if_t<std::is_arithmetic_v<T>>`
`6`	`6`	`derangement(T n){`
`7`	`7`	`if (!n) return 1;`
`8`	`8`	`if (n==1) return 0;`
`9`		`- return (n-1)(derangement(n-1)+derangement(n-2));`
	`9`	`+ return (n-1)*(derangement(n-1)+derangement(n-2));`
`10`	`10`	`}`