How to Reverse given String using Recursion in Java?

Problem Description :

Write a program in Java that prints Reverse of String using Recursion method.

Reverse of String using Recursion

Concept :

The process of calling itself is called Recursion. Here we create one function that prints the last character of String and calling the same function again, this process continues until the length of remaining String is 1.

Java Program :

	package com.javamultiplex.string;
	import java.util.Scanner;
	/**
	* @author Rohit Agarwal
	* @category String Interview Questions
	* @problem Reverse String using Recursion method
	*
	*/
	public class ReversedStringByRecursion {
	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();
	String newString = getReverseString(string, length);
	System.out.println("Reversed String is :\n" + newString);
	} finally {
	if (input != null) {
	input.close();
	}
	}
	}
	private static String getReverseString(String string, int length) {
	if (length == 1) {
	// Converting char to String.
	return String.valueOf(string.charAt(0));
	} else
	return string.charAt(length - 1) + getReverseString(string, length - 1);
	}
	}

view raw ReversedStringByRecursion.java hosted with ❤ by GitHub

Output :

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

References :

http://whatis.techtarget.com/definition/recursion

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

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Tags : Interview Questions on String, Reverse, Recursion, Solution in Java, if else statement.

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