String Palindrome

 

Given a string, determine if it is a palindrome, considering only alphanumeric characters.


Sample Input 1 :
abcdcba
Sample Output 1 :
true 
public class Solution {

	public static boolean isPalindrome(String str) {
	
        int l =str.length();
        String r="";
        for(int i=0;i<l;i++)
        {

			char ch=str.charAt(i);
            r=ch+r;
            
        }
        if(r.equals(str))
        {
            return true;
        }
        return false;
	}

}

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