package exec.stack;
import java.util.*;

public class StackTest {
    public static void main(String[] args){
        Stack<S> stk = new Stack<S>();
        for(int i = 0; i < 5; i++ ){
            S s = new S();
            s.setA(i*3+2);
            s.setB(i*i/3);
            stk.push(s);
        }
        System.out.println(stk.peek().getA());
        System.out.println(stk.peek().getB());
        System.out.println(stk.size());
        int stackSize = stk.size();
        for(int i = 0; i< stackSize; i++){
            S s = new S();
            s = stk.pop();
            System.out.println(s.getA());
            System.out.println(s.getB());
        }
    }
}cd