Question

Design a class to input a number and print the number in reverse order java while loop and for loop

Answer 1

Question:-

Design a class to input a number and print the number in reverse order in java using for and while loop.

Program:-

Using for loop.

import java.util.*;

class Reverse

{

public static void main(String args[])

{

Scanner sc=new Scanner(System.in);

System.out.print("Enter the number: ");

int n=sc.nextInt(),s=0;

for(;n!=0;n/=10)

s=s*10+n%10;

System.out.print("Reverse of the number is: "+s);

}

}

Using while loop.

import java.util.*;

class Reverse

{

public static void main(String args[])

{

Scanner sc=new Scanner(System.in);

System.out.print("Enter the number: ");

int n=sc.nextInt(),s=0;

while(n!=0)

{

s=s*10+n%10;

n/=10;

}

System.out.print("Reverse of the number is: "+s);

}

}