palindrome using recursion in java

Aditya Trivedi answered on November 5, 2022 Popularity 8/10 Helpfulness 2/10

answer palindrome using recursion in java

related java program to check palindrome number using recursion

palindrome using recursion in java

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// A recursive JAVA program to
// check whether a given String
// is palindrome or not
import java.io.*;
 
class GFG
{
    // A recursive function that
    // check a str(s..e) is
    // palindrome or not.
    static boolean isPalRec(String str,
                            int s, int e)
    {
        // If there is only one character
        if (s == e)
            return true;
 
        // If first and last
        // characters do not match
        if ((str.charAt(s)) != (str.charAt(e)))
            return false;
 
        // If there are more than
        // two characters, check if
        // middle substring is also
        // palindrome or not.
        if (s < e + 1)
            return isPalRec(str, s + 1, e - 1);
 
        return true;
    }
 
    static boolean isPalindrome(String str)
    {
        int n = str.length();
 
    // An empty string is
    // considered as palindrome
        if (n == 0)
            return true;
 
        return isPalRec(str, 0, n - 1);
    }
 
    // Driver Code
    public static void main(String args[])
    {
        String str = "geeg";
 
        if (isPalindrome(str))
            System.out.println("Yes");
        else
            System.out.println("No");
    }
}

Popularity 8/10 Helpfulness 2/10 Language java

Source: Grepper

Tags: java palindrome recursion using

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Contributed on Nov 05 2022

Aditya Trivedi

0 Answers Avg Quality 2/10

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java program to check palindrome number using recursion

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// Recursive Java program to
// check if the number is
// palindrome or not
import java.io.*;

class GFG
{

// recursive function that
// returns the reverse of digits
static int rev(int n, int temp)
{
	// base case
	if (n == 0)
		return temp;

	// stores the reverse
	// of a number
	temp = (temp * 10) + (n % 10);

	return rev(n / 10, temp);
}

// Driver Code
public static void main (String[] args)
{
	int n = 121;
	int temp = rev(n, 0);
	
	if (temp == n)
		System.out.println("yes");
	else
		System.out.println("no" );
}
}

// This code is contributed by anuj_67.

Popularity 8/10 Helpfulness 1/10 Language java

Source: www.geeksforgeeks.org

Tags: java palindrome palindro

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Contributed on Dec 23 2022

Pratik Lonari

0 Answers Avg Quality 2/10

palindrome using recursion in java

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java program to check palindrome number using recursion

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