How to write a FACTORIAL PROGRAM in Java using the for loop

-

 import java.util.Scanner;

import java.lang.Math;

public class hay {

public static void main( String[] args) {

Scanner obj=new Scanner(System.in);

System.out.println("enter The no : ");

int n=obj.nextInt();

int ans=1;

if(n==0) {

ans=1;

System.out.println(ans);

}

else

{

for(int i=1;i<=n;i++)

{

                        ans=ans*i;

}

System.out.println(ans);

}

Comments

Post a Comment

Popular posts from this blog

Authentication in Node.js

-
Image
  In this article we will be learning how to perform authentication in Node.js using JWT. Authentication is a process of identification of user’s/device identity. A common example of this is entering a username/email and password when a user is trying to login. The authentication process starts when a user’s/device credentials are correct. You must have already familiar with authentication because we all do this in our daily routine. What is JWT JSON Web Token (JWT) is an open standard ( RFC 7519 ) that defines a compact and self-contained way for securely transmitting information between parties as a JSON object. This information can be verified and trusted because it is digitally signed. JWTs can be signed using a secret (with the  HMAC  algorithm) or a public/private key pair using  RSA  or  ECDSA . Prerequisites To follow along with this tutorial, you will need: A working knowledge of JavaScript. A good understanding of Node.js. A basic understanding of MySql or any database of you
Read more

Complete RoadMap of DSA in 120 ( 4 Month's ) Days

-
Image
  Complete RoadMap of DSA in 120 Days !! Day  −∞  to 0:  Stick to a programming language like C++/Java/Python. Make sure that you are comfortable with pointers/objects. Things to do: Things to Know in C++/Java/Python or any language. → User Input/Output. → Data Types → If Else statement → Switch Statement → Arrays , Strings → For Loop → While Loop → Function → Time Complexity Build-up Logical Thinking. → Practice Pattern Questions from any source like Leetcode. Learn STL/Java-Collections or similar thing in your language. Basic Maths. → Count Digits → Reverse a Number → Check Palindrome → GCD or HCF → Armstrong Number → Print all Divisors → Check for Prime Learn Basic Recursion. → Understand recursion by print something N times → Print name N times using recursion → Print 1 to N using recursion → Print N to 1 using recursion → Sum of first N numbers → Factorial of N numbers → Reverse an array → Check if a string is palindrome or not → Fibonacci Number Learn Basic Hashing. → Counting fr
Read more