How To Reverse A Number In Java

Reverse a number in java, this is the common question have seen from who is a beginner in this programming field. Especially in this is the number reversal game.  Below programme users can use for both to character reverse and number reverse. In another word, you can say reverse a string in java. Must check Count repeated characters in a string using java and How to find minimum and maximum sum values in java.

Reverse an array in java

To write a java program to reverse an array of integer values along with character v.alueYou are not required to put a lot to efforts to write a java program. Just it demands a good understanding of the concepts. This is the fundamental concepts of making the code.

So in this tutorial, I also, going to show you one of simple and less time-consuming program. Here you are going to see reverse an array without using another array in java.  Here am going to reverse an array in java using for loop.

Reverse a number in java by loop

Here reverse a number in java by the loop,  am going to use a single for loop rather in place two for a loop. Such as below.

1 for (int i=arr.length-1; i<arr.length; i- -)
2 {
3
4 }

Java reverse string array significant aspects of a program

Below reverse an array in java I have designed it as automated code for character and number reverse a string in java. And to take users input I have taken the help of Scanner.

7 Scanner input=new Scanner(System.in);//input
8 String num=input.next();

write a java program to make separate one by one

To do java collections reverse first it required below char java program to store each word or integer one after another. Such as,

14 char arr[]=new char[count];

Now to store data into the arrays lets make the loop.

15 for (int i=0; i<count; i++)
16 {
17 arr[i]=num.charAt(i);
18 }

ArrayIndexOutBoundsException

This is one of the common java arrays problems. Most I have seen people asking this. So to remove this ArrayIndexOutBoundsException I have used the break statement.

24 {
25 break;
26 }

Write a java program to number reversal

Here below program, I have designed to number reversal. See below loop coding.

19 int x=0;
20 for (int i=arr.length-1; i<arr.length; i–)
21 {
22 System.out.print(arr[i]+”  “);
23 if (i==x)
24 {
25 break;
26 }
27

Reverse an array in java

Below I have written the java program and before that, I have uploaded the reverse a string in java.txt files. First, check the ‘java program’. After making changes as per the requirement.  So now let’s see the “reverse an array without using another array in java”.

1 import java.util.*;
2
3 public class reverse
4 {
5 public static void main(String[] args)
6 {
7 Scanner input=new Scanner(System.in);//input
8 String num=input.next();
9 System.out.print(“Enter here ::” + num);
10 System.out.println();
11 int count=num.length();
12
13 //Arrays……………
14 char arr[]=new char[count];
15 for (int i=0; i<count; i++)
16 {
17 arr[i]=num.charAt(i);
18 }
19 int x=0;
20 for (int i=arr.length-1; i<arr.length; i–)
21 {
22 System.out.print(arr[i]+”  “);
23 if (i==x)
24 {
25 break;
26 }
27
28 }
29 }

Reverse array in java Output

reverse an array without using another array in java

Reverse array in java using for loop comments

In this article, I have tried to give you one of the simple and quickest methods to reverse a string in java. Using this method a java programmer can run it reverse array for both number and character. In this java program may I have used some of the unnecessary variables to make you a better understanding.  So do not get confused with that.

While designing this java program, Especially I have on focus for the beginner. Passing throws out the ‘java program’ and while write a java program if you get confused and some part of this program if you do not understand so let me know by the below-commenting box.

Doing so I can come with the possible solution of java collections reverse.

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