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ReverseNumber.java

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import java.util.Scanner;

public class ReverseNumber {

public static void main(String[] args) {

long num,n;

/* long temp = 0; */

String output = "";

System.out.println("Program to reverse an integer entered by user using while loop.\n---");

Scanner sm = new Scanner(System.in);

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

num = sm.nextInt();

n=num;

/* while(n>0) {

temp=temp*10+n%10;

n=n/10;

}

*/ // You can also use the above method but if you enter 200 it will return 2

while(n>0) {

output= output+ ""+n%10;

n=n/10;

}

//The above method will append the variable in String; if you enter 200 it will return 002

/* System.out.println("The reverse of "+num+" is "+temp); */

System.out.println("The reverse of "+num+" is "+output);

sm.close();

System.out.println("---\nThe Program has ended,");

}