A Number After a Double Reversal

给个数字, 问翻转两次是不是和以前的数字一样.

class Solution {
    public boolean isSameAfterReversals(int num) {
        if(num == 0)
            return true;
        String s = String.valueOf(num);
        if(s.charAt(0) == '0')
            return false;
        if(s.charAt(s.length() - 1) == '0')
            return false;
        return true;
    }
}