Find First Palindromic String in the Array

给一个字符串组, 找到第一个回文

class Solution {
    public String firstPalindrome(String[] words) {
        for(String w : words){
            if(isPal(w))
                return w;
        }
        return "";
    }
    public boolean isPal(String s) {
        int i = 0;
        int j = s.length() - 1;
        while(i <= j){
            if(s.charAt(i) != s.charAt(j))
                return false;
            i++;
            j--;
        }
        return true;
    }
}