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how to check palindrome in java

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Chathumal Sangeeth answered on April 26, 2021 Popularity 9/10 Helpfulness 3/10

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how to check palindrome in java

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    public static void main(String[] args) {
        Scanner input = new Scanner(System.in);
        int num = input.nextInt();
        int temp = num;

        int rev = 0;
        while (num > 0) {
            rev = rev * 10 + num % 10;
            num /= 10;
        }
        System.out.println(temp==rev?"palindrome":"not palindrome");
    }

Popularity 9/10 Helpfulness 3/10 Language java

Source: Grepper

Tags: find java numbers palindrome

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Contributed on May 15 2022

Chathumal Sangeeth

0 Answers Avg Quality 2/10

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check palindrome in java

Comment

class Solution {
    public boolean isPalindrome(int x) {
        if(x < 0)
            return false;

        return x == reverseNum(x);

    }
    private static int reverseNum(int num){
        int rev = 0;
        while(num>0){
            int digit = num%10;
            rev = (rev * 10) + digit;
            num = num/10;
        }
        return rev;
    }
}

Popularity 10/10 Helpfulness 4/10 Language java

Source: leetcode.com

Tags: java

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Contributed on Jul 01 2022

Glorious Gazelle

0 Answers Avg Quality 2/10

Java program to check whether the given string is a palindrome or not

Comment

public static void main(String[] args) throws ParseException {
    String word;
    Scanner in = new Scanner(System.in);
    System.out.println("Enter a string to check if it is a palindrome");
    word = in.nextLine();
    System.out.println(palindromeChecker(word));
}
public static String palindromeChecker(String word){
    int length = word.length();
    String reverse="";
    for ( int i = length - 1 ; i >= 0 ; i-- )
        reverse = reverse + word.charAt(i);
    if (word.equals(reverse))
        return "Palindrome";
    else
        return "Not a Palindrome";
}

Popularity 10/10 Helpfulness 4/10 Language java

Source: stackoverflow.com

Tags: java

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Contributed on Aug 23 2022

Doubtful Dove

0 Answers Avg Quality 2/10

is palindrome java

Comment

-1

public static boolean checkPalindrome(String str)
{     
 
    int len = str.length();

    for(int i = 0; i < len / 2; i++)  {
        if (str.charAt(i) != str.charAt(len - i - 1))
            return false;
    }
    return true;
}

Popularity 10/10 Helpfulness 4/10 Language java

Source: Grepper

Tags: java

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Contributed on Sep 28 2021

Filthy Fox

0 Answers Avg Quality 2/10

integer palindrome in java

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 public boolean isPalindrome(int x) {
        String str = Integer.toString(x);
        String reverse =  new StringBuilder(str).reverse().toString();
        return  str.equals(reverse)?true:false;}

Popularity 10/10 Helpfulness 4/10 Language java

Source: Grepper

Tags: integer

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Contributed on Apr 26 2021

Kirk-Patrick Brown

0 Answers Avg Quality 2/10

String Palindrome in Java

Comment

import java.util.*;
import java.lang.*;
import java.io.*;


 class Main {

    static boolean isPalindrome(String s)
    {

       /* Two pointers initialised to 0 and 's.length()-1'.*/
        int i = 0, j = s.length() - 1;

        /* Looping through the string */
        while (i < j) {

            /* Even if one character is not equal, we will return false. */
            if (s.charAt(i) != s.charAt(j))
                return false;
               
            /* Value of pointers is changed */
            i++;
            j--;
        }
       
        /* This means all characters are same and thus string is a palindrome*/
        return true;
    }

    public static void main(String[] args)
    {
        String s = "abba";

        /* First, We'll convert it to lower case. */
        s = s.toLowerCase();
   
        if (isPalindrome(s))
            System.out.print("Yes");
        else
            System.out.print("No");
    }
}

Popularity 9/10 Helpfulness 4/10 Language java

Source: www.codingninjas.com

Tags: java

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Contributed on May 20 2022

Coding Ninjas

0 Answers Avg Quality 2/10

integer palindrome in java

Comment

 public boolean isPalindrome(int x) {
        String str = Integer.toString(x);
        String reverse =  new StringBuilder(str).reverse().toString();
        return  str.equals(reverse)?true:false;
     }

Popularity 10/10 Helpfulness 3/10 Language java

Source: Grepper

Tags: integer

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Contributed on Apr 26 2021

Kirk-Patrick Brown

0 Answers Avg Quality 2/10

palindrome number in java

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https://www.facebook.com/codewithredoy

// Follow me: www.facebook.com/codewithredoy

import java.util.Scanner;

public class PalindromeNumber {
    public static void main(String[] args) {
        Scanner s = new Scanner(System.in);
        System.out.println("Enter a number - ");
        int num = s.nextInt();

        String number = String.valueOf(num);

        String reverse = new StringBuilder(number).reverse().toString();

        if (number.equals(reverse)) {
            System.out.println(num + " is a Palindrome number.");
        }
        else {
            System.out.println(num + " isn't a palindrome number.");
        }
    }
}

Popularity 8/10 Helpfulness 3/10 Language java

Source: Grepper

Tags: java palindrome palindrom

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Contributed on Jan 19 2023

Excited Earthworm

0 Answers Avg Quality 2/10

Java palindrome number example

Comment

package com.howtodoinjava.puzzle;
 
public class PalindromeTest
{
    /**
     * Test the actual code if it works correctly
     * */
    public static void main(String[] args)
    {
        System.out.println(checkIntegerPalindrome( 100 ));    //false
        System.out.println(checkIntegerPalindrome( 101 ));    //true
        System.out.println(checkIntegerPalindrome( 500045 ));   //false
        System.out.println(checkIntegerPalindrome( 50005 ));  //true
    }
 
    /**
     * This function will test the equality if a number and its reverse.
     * @return true if number is palindrome else false
     * */
    public static boolean checkIntegerPalindrome(int number)
    {
        boolean isPalindrome = false;
        if(number == reverse(number))
        {
            isPalindrome = true;
        }
        return isPalindrome;
    }
 
    /**
     * This function will reverse a given number.
     * @return reverse number
     * */
    public static int reverse(int number)
    {
        int reverse = 0;
        int remainder = 0;
        do {
            remainder = number % 10;
            reverse = reverse * 10 + remainder;
            number = number / 10;
 
        } while (number > 0);
        return reverse;
    }
}
 
 
Program Output.
 
 
false
true
false
true

Popularity 9/10 Helpfulness 3/10 Language java

Source: howtodoinjava.com

Tags: java palindrome palin

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Contributed on Jan 05 2023

Anjali Sharma

0 Answers Avg Quality 2/10

Palindrome Program in Java.

Comment

/*package whatever //do not write package name here */
 
import java.io.*;
 
class GFG {
    public static boolean isPalindrome(String str)
    {
        // Initializing an empty string to store the reverse
        // of the original str
        String rev = "";
 
        // Initializing a new boolean variable for the
        // answer
        boolean ans = false;
 
        for (int i = str.length() - 1; i >= 0; i--) {
            rev = rev + str.charAt(i);
        }
 
        // Checking if both the strings are equal
        if (str.equals(rev)) {
            ans = true;
        }
        return ans;
    }
    public static void main(String[] args)
    {
        // Input string
        String str = "geeks";
 
        // Convert the string to lowercase
        str = str.toLowerCase();
        boolean A = isPalindrome(str);
        System.out.println(A);
    }
}

Popularity 9/10 Helpfulness 3/10 Language java

Source: Grepper

Tags: java

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Contributed on Jul 12 2022

Travinth Dayalaeaswaran

0 Answers Avg Quality 2/10

how to check palindrome in java

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how to check palindrome in java

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Java palindrome number example

Palindrome Program in Java.

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