Question

Write a Java program to reverse a number which is input by the user(through Buffered reader class)?​

Answer 1

Solution:

The given cøde is written in Java.

import java.io.*;

public class Program {

public static void main(String[] args) throws IOException {

BufferedReader br=new BufferedReader(new InputStreamReader(System.in));

System.out.print("Enter a number - ");

int n=Integer.parseInt(br.readLine());

int s=0;

while(n!=0){

s=s*10+n%10;

n/=10;

}

System.out.println("Reverse of the number - "+s);

}

}

Here, I have used BufferedReader class to take input.

Number n is taken as input and then the reversed number is calculated and stored in variable s. The variable s is now displayed on the screen.

See the attachment for output.

Answer 2

Answer:

Program:-

//To reverse a number using BufferedReader class

import java.io.*;

public class Main

{

public static void main(String args[])throws IOException

{

InputStreamReader read=new InputStreamReader(System.in);// if you want a single inputted statenent also you may write BufferedReader in=new BufferedReader(new InputStreamReader(System.in));

BufferedReader in=new BufferedReader(read);

int n,a=0,rev=0,num;

System.out.println("Enter a number");

n=Integer.parseInt(in.readLine());

num=n;

while(n!=0)

{

a=n%10;

rev=rev*10+a;

n=n/10;

}

System.out.println("The reversed form of "+num+"="+rev);

}

}