9. Palindrome Number

class Solution {
    public boolean isPalindrome(int x) {
if( x < 0 ) // negative 
    return false;
String nm = String.valueOf(x);
int start = 0;
int end = nm.length() -1;
while(start <= end){
if(nm.charAt(start) != nm.charAt(end)) return false;
start++;
end--;
    }
return true;
  
    }
}