Ping He

import java.util.Stack;

public class Stack1 {

    public static void main(String[] args) {
        String test = "tacocat";
        if(isPalidrome(test)){
            System.out.println("yes");
        }else{
            System.out.println("no");
        }
    }

    public static boolean isPalidrome(String test) {
        int length = test.length();
        int x=0;
        Stack <Character> stack = new Stack<Character>();
        for(int i = 0; i < length/2; i++) {
          stack.push(test.charAt(i));
            if(length % 2 != 0 && i==length/2 + 1) {
                break;
            }
        if(stack.empty()){
            return false
        }
        while(i < length) {
            char test = stack.pop();
            if(fromStack != test.charAt(i)) {
                return false;
            }
        }
        return true;
        }
    }
}