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There are three ways to reverse a number in Java: Reverse a number using while loop. Reverse a number using for loop. Reverse a number using recursion. Let's apply the above steps in an example. Example. Suppose, we want to reverse the number 1234.
Jul 14, 2023 · Methods to Reverse a Number in Java. We can reverse a number in Java using three main methods as mentioned below: Using While Loop. Using Recursion. Using Stringbuilder class. 1. Reverse a Number Using the While Loop. Simply apply the steps/algorithm discussed and terminate the loop when the number becomes zero.
. System.out.println("Original Number: " + num); // run loop until num becomes 0 while(num != 0) { . // get last digit from num int digit = num % 10; reversed = reversed * 10 + digit; // remove the last digit from num . num /= 10; } System.out.println("Reversed Number: " + reversed); } } Output. Reversed Number: 4321.
Oct 18, 2023 · Write a program to reverse the digits of an integer. Examples : Input : num = 12345. Output: 54321. Input : num = 876. Output: 678. Flowchart: ITERATIVE WAY. Algorithm: Input: num. (1) Initialize rev_num = 0. (2) Loop while num > 0. (a) Multiply rev_num by 10 and add remainder of num . divide by 10 to rev_num. rev_num = rev_num*10 + num%10;
Oct 26, 2024 · The methods are: Using While Loop. Using Static Method. Using Function. Using Recursion. Using While Loop. 1) Entered value will be assigned to n and res=0. 2) While loop iterates until n!=0, if n=0 then the loop terminated and prints the res value. example n=153, the condition is true ,a=3, res= (0*10)+3=3, n=15.
Mar 12, 2024 · Approach 1: In this approach, we can simply print the unit digit of a number. And then call the recursive function for the number after removing this unit digit (number/10) And this process continues till the number is reduced to a single-digit number. Example: num = 82695. reverse(82695) |. |__print(5) reverse(8269)
Here are the best Five Ways To Reverse a Number In Java: 1. Reverse a number in Java Using the while loop. 2. Reverse a number in Java Using do-while Loop. 3. Reverse a number in Java Using Recursion. 4. Reverse a number in Java Using String. 5. Reverse a number in Java Using Array.
Sep 15, 2022 · There are several ways to reverse a number in Java. We will mainly discuss following three techniques to reverse a number. Table of contents. Program 1: Reverse a number using while Loop. Program 2: Reverse a number using for Loop. Program 3: Reverse a number using recursion. Program 1: Reverse a number using while Loop.
Reversing a number is a common programming task that can be achieved using different approaches in Java. This guide will show you how to reverse a number using various methods, including mathematical operations, string manipulation, and recursion. Problem Statement. Given an integer, reverse its digits. For example: Input: 12345. Output: 54321.
1. Overview. In this lesson, we will learn how to reverse a number using math in Java. We will understand the math operations needed for this task and explore three different methods to achieve it. 2. Solution Approach. To begin, let’s look at an example to understand what needs to be done.
