From a18c6ba5d4d55245590c5ec95b48234d01e7ea9b Mon Sep 17 00:00:00 2001
From: e2hang <2099307493@qq.com>
Date: Mon, 21 Jul 2025 17:08:57 +0800
Subject: [PATCH] chainStack

---
 Stack/chainStack/chainStack.h | 127 ++++++++++++++++++++++++++++++++++
 Stack/chainStack/main.cpp     |  42 +++++++++++
 Stack/chainStack/node.h       |  24 +++++++
 Stack/chainStack/stack.h      |  13 ++++
 4 files changed, 206 insertions(+)
 create mode 100644 Stack/chainStack/chainStack.h
 create mode 100644 Stack/chainStack/main.cpp
 create mode 100644 Stack/chainStack/node.h
 create mode 100644 Stack/chainStack/stack.h

diff --git a/Stack/chainStack/chainStack.h b/Stack/chainStack/chainStack.h
new file mode 100644
index 0000000..00ebe58
--- /dev/null
+++ b/Stack/chainStack/chainStack.h
@@ -0,0 +1,127 @@
+#ifndef CHAIN_STACKH
+#define CHAIN_STACKH
+#include <iostream>
+#include "stack.h"
+#include "node.h"
+
+template <class T>
+class chainStack : public Stack<T>{
+private:
+	Node<T>* first;
+	Node<T>* last;
+	int stackTop;
+public:
+	chainStack() = delete;
+	chainStack(Node<T>* f = nullptr);
+	chainStack(const chainStack<T>& x);
+	virtual bool empty() const;
+	virtual int size() const;
+	virtual T& top();
+	virtual void pop();
+	virtual void push(const T& theElement);
+	virtual void show() const;
+	~chainStack();
+};
+
+template <class T>
+inline chainStack<T>::chainStack(Node<T>* f) :first(f), stackTop(0), last(nullptr) {
+		Node<T>* p = first;
+		while (p) {
+			++stackTop;
+			p = p->next;
+		}
+}
+
+template <typename T>
+inline chainStack<T>::chainStack(const chainStack<T>& x)
+{
+	Node<T>* run = x.first;
+	Node<T>* tnext = nullptr;
+	Node<T>* tprev = nullptr;
+	while (run) {
+		Node<T>* tmp = new Node<T>(run->element, tprev, tnext);
+		if(tprev) tprev->next = tmp;
+		if (!tprev) first = tmp;
+		tprev = tmp;
+		run = run->next;
+	}
+	last = tprev;
+}
+
+template<class T>
+inline bool chainStack<T>::empty() const
+{
+	return (stackTop == 0);
+}
+
+template<class T>
+inline int chainStack<T>::size() const
+{
+	return stackTop;
+}
+
+template<class T>
+inline T& chainStack<T>::top()
+{
+	return last->element;
+}
+
+template<class T>
+inline void chainStack<T>::pop()
+{
+	if (stackTop == 0)
+		throw std::invalid_argument("Pop Error: No Element in Stack");
+	if (last) {
+		Node<T>* tmp = last;
+		last = last->prev;
+		if (last) {
+			last->next = nullptr;
+		}
+		else {
+			first = nullptr;
+		}
+		delete tmp;
+		stackTop--;
+	}
+}
+
+
+template<class T>
+inline void chainStack<T>::push(const T& theElement) {
+	Node<T>* tmp = new Node<T>(theElement, last, nullptr);
+	if (last) last->next = tmp;
+	else first = tmp;
+	last = tmp;
+	stackTop++;
+}
+
+
+template<class T>
+inline void chainStack<T>::show() const {
+	Node<T>* p = first;
+	while (p) {
+		std::cout << p->element << " ";
+		p = p->next;
+	}
+	std::cout << std::endl;
+}
+
+template<class T>
+inline chainStack<T>::~chainStack()
+{
+	Node<T>* p = first;
+	Node<T>* that;
+	while (p) {
+		that = p;
+		p = that->next;
+		delete that;
+	}
+	first = nullptr;
+	last = nullptr;
+	stackTop = 0;
+}
+
+
+
+
+#endif // !CHAIN_STACKH
diff --git a/Stack/chainStack/main.cpp b/Stack/chainStack/main.cpp
new file mode 100644
index 0000000..354f18b
--- /dev/null
+++ b/Stack/chainStack/main.cpp
@@ -0,0 +1,42 @@
+#include <iostream>
+#include "node.h"
+#include "stack.h"
+#include "chainStack.h"
+using namespace std;
+/*
+TO TEST:
+private:
+	Node<T>* first;
+	Node<T>* last;
+	int stackTop;
+public:
+	chainStack() = delete;
+	chainStack(Node<T>* f = nullptr);
+	chainStack(const chainStack<T>& x);
+	virtual bool empty() const;
+	virtual int size() const;
+	virtual T& top();
+	virtual void pop();
+	virtual void push(const T& theElement);
+	virtual void show() const;
+	~chainStack()
+*/
+
+int main() {
+	chainStack<char> s(nullptr);
+	s.push('a');
+	s.show();
+	s.push('b');
+	s.show();
+	s.push('z');
+	s.show();
+	s.pop();
+	s.show();
+	return 0;
+}
+/*
+a
+a b
+a b z
+a b
+*/
\ No newline at end of file
diff --git a/Stack/chainStack/node.h b/Stack/chainStack/node.h
new file mode 100644
index 0000000..b337ea5
--- /dev/null
+++ b/Stack/chainStack/node.h
@@ -0,0 +1,24 @@
+#pragma once
+
+template <class T>
+class Node {
+public:
+	T element;
+	Node<T>* next;
+	Node<T>* prev;
+
+public:
+	Node();                                      // 默认构造
+	Node(const T& e, Node<T>* n = nullptr, Node<T>* p = nullptr);      // 带参数构造
+	Node(const Node<T>& x);                      // 拷贝构造（浅拷贝）
+	~Node() = default;
+};
+
+template<class T>
+Node<T>::Node() : element(), next(nullptr) , prev(nullptr){}
+
+template<class T>
+Node<T>::Node(const T& e, Node<T>* n, Node<T>* p) : element(e), next(p), prev(n){}
+
+template<class T>
+Node<T>::Node(const Node<T>& x) : element(x.element), next(nullptr), prev(nullptr){}
diff --git a/Stack/chainStack/stack.h b/Stack/chainStack/stack.h
new file mode 100644
index 0000000..9eaabbb
--- /dev/null
+++ b/Stack/chainStack/stack.h
@@ -0,0 +1,13 @@
+#pragma once
+
+template <class T>
+class Stack {
+public:
+	virtual ~Stack() = default;
+	virtual bool empty() const = 0;
+	virtual int size() const = 0;
+	virtual T& top() = 0;
+	virtual void pop() = 0;
+	virtual void push(const T& theElement) = 0;
+	virtual void show() const = 0;
+};
\ No newline at end of file