WAP to accept a string and check whether the string is a palindrome or not

 A palindrome is a word which reads the same backward as forward

For Example : MADAM

Approach :

Here i am using Java Builder Class to perform the task. It is used to create mutable (which can be changed) Strings. We will be using StringBuilder insert() method to reverse the string and check if its palindrome or not. The StringBuilder insert() method inserts the given string with this string at the given position. 

Java    Python

Code : 

import java.util.Scanner;

public class palindrome {
    public static void main(String[] args) {
        StringBuilder temp = new StringBuilder();
        Scanner sc = new Scanner(System.in);
        System.out.println("Enter a Word : ");
        String word = sc.next();

        for (int i = 0; i < word.length(); i++) {
            char r = word.charAt(i);
            temp.insert(0, r);
        }
        if (word.equals(temp.toString())){
            System.out.println(word+" is palindrome");
        }
        else {
            System.out.println(word+" is not palindrome");
        }
    }
}

Output :

CASE 1 : When a String is palindrome

Enter a Word : 

madam

madam is palindrome

CASE 2 : When a String is not palindrome

Enter a Word : 

abhay

abhay is not palindrome

Explanation :

Declare Scanner and String Builder Objects

Take a String input from the user

initialize a for loop within the range from 0 to length of string

extract the character at the index using charAt() method and insert it into temp

Rest is simple create a if-else block and check if the String is palindrome or not