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How To Reverse A String In Java Using For Loop

Last Updated : Mar 11, 2024

How To Reverse A String In Java Using For Loop

In this article we will show you the solution of how to reverse a string in java using for loop, Java is an object-oriented, class-based programming language.

It is among the most versatile programming languages, with benefits in almost every field, including systems, applications, web apps, and APIs.

It is a programming language that allows programmers to write once and read anywhere (WORA), which means that once compiled, Java code could indeed run on any and all platforms that support Java without the requirement for recompilation.

As a result, Java can be considered a platform-independent language.It has built-in data structures like Integer, Float, and Boolean.

A string in Java is simply a character sequence that is also a object. The String object in Java can indeed be sub to a variety of processes. A common operation is string reversal.

A Reverse String is a string that has been reversed. For example, the string 'HAPPY' could be reversed as 'YPPAH'. Similarly, when reversed, the string 'LUCKY' could be written as 'YKCUL'.

Consider a string to be a character array in which you are able solve several more string-based problems.

Because the strings are immutable, you must create a further string to counter them.

The string class lacks a reverse method for reversing the string. It provides a toCharArray() technique for doing the opposite.

To reverse a sequence throughout Java, first transform it to StringBuilder. which is simply a mutable string..

The class StringBuilder includes a function called reverse() that reverses this same given string and returns the result.

As a result, we will use the inbuilt feature reverse() to reverse the StringBuilder and then use the inbuilt function function toString() { [native code] } to convert this same reversed StringBuilder to String ().

Step By Step Guide On How To Reverse A String In Java Using For Loop :-

import java.util.Scanner;
class ReverseofaString
{
            public static void main(String[ ] arg)
            {
            String str;
            char ch;
            Scanner sc=new Scanner(System.in);
            System.out.print("Enter a string : ");
            str=sc.nextLine();
            System.out.println("Reverse of a String '"+str+"' is :");
            for(int j=str.length();j>0;--j)
            {
            System.out.print(str.charAt(j-1));
            }
}
}
  1. The For loop loops from j=string length to j>0.
  2. It prints this same character of a string at index (i-1) and then returns the reverse of the a string.
  3. Define an empty String reverse. This is the place we'll put with us final reversed string.
  4. 4.Interpolate through the array from the last indicator to the first index using a for loop.
  5. While iterating, add a character to String reverse.

Conclusion :-

To reverse a sequence throughout Java, first transform it to StringBuilder. which is simply a mutable string.

The class StringBuilder includes a function called reverse() that reverses this same given string and returns the result.

As a result, we will use the inbuilt feature reverse() to reverse the StringBuilder and then use the inbuilt functiontoString() { [native code] } to convert this same reversed StringBuilder to String ().

I hope this article on how to reverse a string in java using for loop helps you and the steps and method mentioned above are easy to follow and implement.

Author Image About Riya

A recent graduate with a Bachelor of Technology (B.Tech) in Computer Science from India. She is passionate about leveraging technology to solve real-world problems. With a strong foundation and experience in programming languages such as Python, Django, HTML, CSS, and JavaScript, java, php and have honed her skills through hands-on projects and coursework.

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