Four-digit palindrome. A palindrome is a number which reads the same when read forward as it it does when read backward. Given a four-digit integer, print “YES” if it’s a palindrome and print “NO” otherwise.
|
Input |
Output |
|
1221 |
YES |
|
1231 |
NO |
|
5775 |
YES |
|
5777 |
NO |
|
5776 |
NO |