How to Reverse given String using Iteration in Java?

Problem Description :

Write a program in Java that prints reverse of String using Iteration method.

How to reverse given string using iteration in Java?

Reverse of String using iteration

Concept :

We have to use loop (for, while or do while) that will run from (length-1) to 0 and one by one append all characters of String. Here we are using append() method of StringBuilder class.

Java Program :

package com.javamultiplex.string; import java.util.Scanner; /** * * @author Rohit Agarwal * @category String Questions * @problem Reverse of String using Iteration method * */ public class ReverseStringByIteration { public static void main(String[] args) { Scanner input = null; try { input = new Scanner(System.in); System.out.println("Enter String :"); String string = input.nextLine(); int length = string.length(); StringBuffer newString = new StringBuffer(); for (int i = length - 1; i >= 0; i--) { newString.append(string.charAt(i)); } System.out.println("Reversed String is :\n" + newString); } finally { if (input != null) { input.close(); } } } }

Output :

Output - How to find reverse of the String using Iteration method in Java?

References :

https://docs.oracle.com/javase/7/docs/api/java/lang/StringBuilder.html

https://www.tutorialspoint.com/java/util/scanner_nextline.htm

http://docs.oracle.com/javase/7/docs/api/java/lang/String.html

Thank you friends, I hope you have clearly understood the solution of this problem. If you have any doubt, suggestion or query please feel free to comment below. You can also discuss this solution in our forum.

Tag : String Questions in Java, Solution in Java, String, StringBuffer, Reverse, Iteration, for loop.

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