1/08/2017

Java Program to Calculate Factorial of a Given Number

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What Is Factorial:- In mathematics, the factorial of a non-negative integer n, denoted by n! is the product of all positive integers less than or equal to n.


For example

5! = 5 * 4 * 3 * 2 * 1 = 120.

The value of 0! is 1, according to the convention for an empty product * The factorial operation is encountered in many areas of mathematics, notably in combinatorics, algebra, and mathematical analysis. Its most basic occurrence is the fact that there are n! ways to arrange n distinct objects into a sequence (i.e., permutations of the set of objects). This fact was known at least as early as the 12th century, to Indian scholars.
Source:- Wikipedia

See Also:- C Program To Calculate Factorial Of A Given Number

Java Program to Find Factorial of a Given Number


import java.util.Scanner;
import java.io.*;

/* Program By Ghanendra Yadav
   Visit http://www.programmingwithbasics.com
*/

public class factjava
{
    public static void main(String args[])
    {
        int fact=1,num,i; 
        Scanner sc = new Scanner(System.in);
 
        System.out.print("Enter The Number That You Want Factorial : \n\n");
        num = sc.nextInt();
 
  for(i=1;i<=num;i++)
  {
   fact=fact*i;
  }
    
  System.out.print("\nFactorial Is = "+fact); 
 }
} 

See Also:- C++ Program To Calculate Factorial Of A Given Number

Output:-


Java Program to Calculate Factorial of a Given Number

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