Reverse string using recursion
Here given code implementation process.
// Reverse string using recursion in java
class MyString
{
//This is reversing the string elements recursively
public String reverse_str(String text, int location)
{
//Base condition to stop the recursion process
if (location >= 0)
{
//Recursive function call
return text.charAt(location) + reverse_str(text, location - 1);
}
//When no character remaining
return "";
}
//This is handling the request process of reverse string elements
public String reverse(String text)
{
//Display given string elements
System.out.println("Before Text : [" + text + "]");
return reverse_str(text, text.length() - 1);
}
public static void main(String[] args)
{
MyString obj = new MyString();
String text = "ABCDE";
text = obj.reverse(text);
//After reverse
System.out.println("After Text : [" + text + "]\n");
text = obj.reverse("654A321");
//After reverse
System.out.println("After Text : [" + text + "]\n");
}
}Output
Before Text : [ABCDE]
After Text : [EDCBA]
Before Text : [654A321]
After Text : [123A456]
//Include header file
#include <iostream>
#include<string.h>
using namespace std;
// Reverse string using recursion in C++
class MyString
{
public:
//This is reversing the string elements recursively
string reverse_str(string text, int location)
{
//Base condition to stop the recursion process
if (location >= 0)
{
//Recursive function call
return text[location] + this->reverse_str(text, location - 1);
}
//When no character remaining
return "";
}
//This is handling the request process of reverse string elements
string reverse(string text)
{
//Display given string elements
cout << "Before Text : [" << text << "]";
return this->reverse_str(text, text.size() - 1);
}
};
int main()
{
MyString obj = MyString();
string text = "ABCDE";
text = obj.reverse(text);
//After reverse
cout << "\nAfter Text : [" << text << "]\n";
text = obj.reverse("654A321");
//After reverse
cout << "\nAfter Text : [" << text << "]\n";
return 0;
}Output
Before Text : [ABCDE]
After Text : [EDCBA]
Before Text : [654A321]
After Text : [123A456]//Include namespace system
using System;
// Reverse string using recursion in C#
class MyString
{
//This is reversing the string elements recursively
public String reverse_str(String text, int location)
{
//Base condition to stop the recursion process
if (location >= 0)
{
//Recursive function call
return text[location] + reverse_str(text, location - 1);
}
//When no character remaining
return "";
}
//This is handling the request process of reverse string elements
public String reverse(String text)
{
//Display given string elements
Console.WriteLine("Before Text : [" + text + "]");
return reverse_str(text, text.Length - 1);
}
public static void Main(String[] args)
{
MyString obj = new MyString();
String text = "ABCDE";
text = obj.reverse(text);
//After reverse
Console.WriteLine("After Text : [" + text + "]\n");
text = obj.reverse("654A321");
//After reverse
Console.WriteLine("After Text : [" + text + "]\n");
}
}Output
Before Text : [ABCDE]
After Text : [EDCBA]
Before Text : [654A321]
After Text : [123A456]
<?php
// Reverse string using recursion in Php
class MyString
{
//This is reversing the string elements recursively
public function reverse_str($text, $location)
{
//Base condition to stop the recursion process
if ($location >= 0)
{
//Recursive function call
return $text[$location] . $this->reverse_str($text, $location - 1);
}
//When no character remaining
return "";
}
//This is handling the request process of reverse string elements
public function reverse($text)
{
echo "Before Text : [". $text ."]";
return $this->reverse_str($text, strlen($text) - 1);
}
}
function main()
{
$obj = new MyString();
$text = "ABCDE";
$text = $obj->reverse($text);
echo "\nAfter Text : [". $text ."]\n";
$text = $obj->reverse("654A321");
echo "\nAfter Text : [". $text ."]\n";
}
main();Output
Before Text : [ABCDE]
After Text : [EDCBA]
Before Text : [654A321]
After Text : [123A456]// Reverse string using recursion in Node Js
class MyString
{
//This is reversing the string elements recursively
reverse_str(text, location)
{
//Base condition to stop the recursion process
if (location >= 0)
{
//Recursive function call
return text[location] + this.reverse_str(text, location - 1);
}
//When no character remaining
return "";
}
//This is handling the request process of reverse string elements
reverse(text)
{
console.log("Before Text : [" + text + "]");
return this.reverse_str(text, text.length - 1);
}
}
function main()
{
var obj = new MyString();
var text = "ABCDE";
text = obj.reverse(text);
console.log("After Text : [" + text + "]\n");
text = obj.reverse("654A321");
process.stdout.write("After Text : [" + text + "]\n");
}
main();Output
Before Text : [ABCDE]
After Text : [EDCBA]
Before Text : [654A321]
After Text : [123A456]# Reverse string using recursion in Python 3
class MyString :
# This is reversing the string elements recursively
def reverse_str(self, text, location) :
# Base condition to stop the recursion process
if (location >= 0) :
# Recursive function call
return text[location] + self.reverse_str(text, location - 1)
# When no character remaining
return ""
# This is handling the request process of reverse string elements
def reverse(self, text) :
print("Before Text : [", text ,"]")
return self.reverse_str(text, len(text) - 1)
def main() :
obj = MyString()
text = "ABCDE"
text = obj.reverse(text)
print("After Text : [", text ,"]\n")
text = obj.reverse("654A321")
print("After Text : [", text ,"]\n")
if __name__ == "__main__": main()Output
Before Text : [ ABCDE ]
After Text : [ EDCBA ]
Before Text : [ 654A321 ]
After Text : [ 123A456 ]
# Reverse string using recursion in Ruby
class MyString
# This is reversing the string elements recursively
def reverse_str(text, location)
# Base condition to stop the recursion process
if (location >= 0)
# Recursive function call
return text[location] + self.reverse_str(text, location - 1)
end
# When no character remaining
return ""
end
# This is handling the request process of reverse string elements
def reverse(text)
# Display given string elements
print("Before Text : [", text ,"]")
return self.reverse_str(text, text.length() - 1)
end
end
def main()
obj = MyString.new()
text = "ABCDE"
text = obj.reverse(text)
# After reverse
print("\nAfter Text : [", text ,"]\n")
text = obj.reverse("654A321")
# After reverse
print("\nAfter Text : [", text ,"]\n")
end
main()Output
Before Text : [ABCDE]
After Text : [EDCBA]
Before Text : [654A321]
After Text : [123A456]
// Reverse string using recursion in Scala
class MyString
{
//This is reversing the string elements recursively
def reverse_str(text: String, location: Int): String = {
//Base condition to stop the recursion process
if (location >= 0)
{
//Recursive function call
return ""+text(location) + reverse_str(text, location - 1);
}
//When no character remaining
return "";
}
//This is handling the request process of reverse string elements
def reverse(text: String): String = {
//Display given string elements
print("Before Text : [" + text + "]");
return reverse_str(text, text.length() - 1);
}
}
object Main
{
def main(args: Array[String]): Unit = {
var obj: MyString = new MyString();
var text: String = "ABCDE";
text = obj.reverse(text);
//After reverse
print("\nAfter Text : [" + text + "]\n");
text = obj.reverse("654A321");
//After reverse
print("\nAfter Text : [" + text + "]\n");
}
}Output
Before Text : [ABCDE]
After Text : [EDCBA]
Before Text : [654A321]
After Text : [123A456]// Reverse string using recursion in Swift
class MyString
{
//This is reversing the string elements recursively
func reverse_str(_ arr_str: [Character], _ location: Int) -> String
{
//Base condition to stop the recursion process
if (location >= 0)
{
//Recursive function call
return String(arr_str[location]) + self.reverse_str(arr_str, location - 1);
}
//When no character remaining
return "";
}
//This is handling the request process of reverse string elements
func reverse(_ text: String) -> String
{
let arr_str = Array(text);
print("Before Text : [", text ,"]");
return self.reverse_str(arr_str, text.count - 1);
}
}
func main()
{
let obj: MyString = MyString();
var text: String = "ABCDE";
text = obj.reverse(text);
print("After Text : [", text ,"]\n");
text = obj.reverse("654A321");
print("After Text : [", text ,"]\n");
}
main();Output
Before Text : [ ABCDE ]
After Text : [ EDCBA ]
Before Text : [ 654A321 ]
After Text : [ 123A456 ]
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