In this example program, we will reverse a string entered by a user.
We will create a function to reverse a string. Later we will call it recursively until all characters are reversed.
Write a Java Program to Reverse String
package com.guru99;
public class ReverseString {
public static void main(String[] args) {
String myStr = "Guru99";
//create Method and pass and input parameter string
String reversed = reverseString(myStr);
System.out.println("The reversed string is: " + reversed);
}
//Method take string parameter and check string is empty or not
public static String reverseString(String myStr)
{
if (myStr.isEmpty()){
System.out.println("String in now Empty");
return myStr;
}
//Calling Function Recursively
System.out.println("String to be passed in Recursive Function: "+myStr.substring(1));
return reverseString(myStr.substring(1)) + myStr.charAt(0);
}
}
Code Output:
String to be passed in Recursive Function: uru99
String to be passed in Recursive Function: ru99
String to be passed in Recursive Function: u99
String to be passed in Recursive Function: 99
String to be passed in Recursive Function: 9
String to be passed in Recursive Function:
String in now Empty
The reversed string is: 99uruG