java使用图形模拟数据进栈 出栈过程

Question

使用图形模拟数据进栈 出栈过程。基本数据结构算法实现。

Answer 1

public class MyStack {

private StackEntry top;

public void push(Object data){
top = new StackEntry(top, data);
}
public Object pop(){

if(top == null){
throw new RuntimeException("暂无数据!");
}
Object data = top.getData();
top = top.getNext();
return data;
}

}

class StackEntry{

private StackEntry next;
private Object data;

StackEntry(StackEntry next,Object data){
this.next = next;
this.data = data;
}

public StackEntry getNext() {
return next;
}

public void setNext(StackEntry next) {
this.next = next;
}

public Object getData() {
return data;
}

public void setData(Object data) {
this.data = data;
}
}