Given a string, write a Java function to check if it is palindrome or not. A string is said to be palindrome if reverse of the string is same as string. For example, “abba” is palindrome, but “abbc” is not palindrome. The problem here is solved using string reverse function. Examples:
Input : malayalam Output : Yes Input : GeeksforGeeks Output : No
Java
// Java program to illustrate checking of a string // if its palindrome or not using reverse function import java.io.*;
public class Palindrome
{ public static void checkPalindrome(String s)
{ // reverse the given String
String reverse = new StringBuffer(s).reverse().toString();
// check whether the string is palindrome or not
if (s.equals(reverse))
System.out.println( "Yes" );
else
System.out.println( "No" );
} public static void main (String[] args)
throws java.lang.Exception
{ checkPalindrome( "malayalam" );
checkPalindrome( "GeeksforGeeks" );
} } |
Output
Yes No
Time complexity: O(N), where N is length of given string.
Auxiliary Space: O(N), The extra space is used to store the reverse of the string.
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