Permutation in java

suhanigupta23 · Feb 1, 2024 · 0cf714d · 0cf714d
1 parent 43efda3
commit 0cf714d
Showing 1 changed file with 23 additions and 0 deletions.
diff --git a/permutation.java b/permutation.java
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+import java.util.*;
+public class Program
+{
+    public static void main(String[] args) 
+    {
+		Scanner scn=new Scanner(System.in);
+        int n=scn.nextInt();
+        int r=scn.nextInt();
+
+        int nfact=1;
+        for(int i=1;i<=n;i++)
+        {
+            nfact*=i;
+        }
+        int nmrfact=1;
+        for(int i=1;i<=n-r;i++)
+        {
+            nmrfact*=i;
+        }
+        int npr=nfact/nmrfact;
+        System.out.println(n+"P"+r+" = "+npr);
+	}
+}