42 lines
978 B
C#
42 lines
978 B
C#
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/*
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* C# Program to Calculate nPr
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*/
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using System;
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using System.Collections.Generic;
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using System.Linq;
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using System.Text;
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namespace ConsoleApplication40
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{
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class Program
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{
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static void Main(string[] args)
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{
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int n, r, per, fact, fact1;
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Console.WriteLine("Enter the Value of 'n' and 'r' to find the Permutation :");
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n = Convert.ToInt32(Console.ReadLine());
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r = Convert.ToInt32(Console.ReadLine());
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fact = n;
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for (int i = n - 1; i >= 1; i--)
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{
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fact = fact * i;
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}
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int number;
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number = n - r;
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fact1 = number;
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for (int i = number - 1; i >= 1; i--)
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{
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fact1 = fact1 * i;
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}
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per = fact / fact1;
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Console.WriteLine("Permutation : {0}",per);
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Console.ReadLine();
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}
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}
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}
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/*
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Enter the value of 'n' and 'r' to find the Permutation :
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10
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5
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Permutation : 30240
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