java栈的实现

1.栈的填充 public class MyStack<E> { private Object[]src=new Object[0]; public void push(E e){ Object[] dest=new Object[src.length+1]; dest[src.length]=e; System.arraycopy(src,0,dest,0,src.length); src=dest; } 2.查看栈顶public E get(){ E e=(E)src[src.length-1]; return e;3.出栈public E poll(){ E e=(E)src[src.length-1]; Object[] dest=new Object[src.length-1]; System.arraycopy(src, 0, dest,0, src.length-1); src=dest; return e;4.检查是否为空public boolean isEmpty(){ return src.length ==0; } }