String res =""; for(int i = A.length()-1;i >=0; i--){ res = res+(A.charAt(i)); } if (res.equals(A)){ System.out.println("Yes"); } else System.out.println("No");

import java.io.; import java.util.;

public class Solution {

public static void main(String[] args) {

    Scanner sc=new Scanner(System.in);
    String A=sc.next();
    String rev=null;
    sc.close();
    for(int i=A.length()-1; i>0;i--){
        rev = rev+A.charAt(i);
    }
    if(rev==A){
        System.out.println("yes");
    }
}

}

import java.io.; import java.util.;

public class Solution {

public static void main(String[] args) {
    Scanner sc = new Scanner(System.in);
    String A = sc.next();
    boolean isPalindrome = true;
    int length = A.length();
    for (int i = 0; i < length / 2; i++) {
        if (A.charAt(i) != A.charAt(length - 1 - i)) {
            isPalindrome = false;
            break;
        }
    }
    System.out.println(isPalindrome ? "Yes" : "No");
    sc.close();
}

}

import java.io.; import java.util.;

public class Solution {

public static void main(String[] args) {

    Scanner sc=new Scanner(System.in);
    String A=sc.next();
    /* Enter your code here. Print output to STDOUT. */
   // String B = sc.next();
    int left  = 0 , right = A.length() - 1;
    boolean isPalindrome = true;

    while(left < right) {
        char l = A.charAt(left) , r = A.charAt(right);
        if(!Character.isLetterOrDigit(l)) {
            left++;
        }else if(! Character.isLetterOrDigit(r)) {
            right -- ;

        }if(l != r ){
            isPalindrome = false;
            break;

        }else {
            left++;
            right--;
        }

    }
    if(isPalindrome){
            System.out.println("Yes");
   }else {
            System.out.println("No");
        }
    sc.close();
}

}****

import java.io.; import java.util.;

public class Solution {

public static void main(String[] args) {

    Scanner sc=new Scanner(System.in);
    String A=sc.next();
    char[] arr = A.toCharArray();
    boolean flag = true;

    /* Enter your code here. Print output to STDOUT. */
    for(int i = 0, j = (A.length()-1); i < A.length(); i++, j--)
    {
        if(arr[i] != arr[j])
        {
            flag = false;
            break;
        }
    }

    if(flag == false)
        System.out.println("No");
    else
        System.out.println("Yes");
}

}