#ifndef LINKLIST_H
#define LINKLIST_H

#include<stdlib.h>
#include<stdio.h>

//链表小结点
typedef struct LINKNODE {
	//相当于挂钩
	struct LINKNODE* next;
}LinkNode;

//链表结点
typedef struct LINKLIST {
	LinkNode head;
	int size;
}LinkList;

//遍历函数指针
typedef void(*PRINTNODE)(LinkNode*);
//比较函数指针
typedef int(*COMPARENODE)(LinkNode*, LinkNode*);

//初始化链表
LinkList* Init_LinkList();
//插入
void Insert_LinkList(LinkList* list, int pos, LinkNode* data);
//删除
void Remove_LinkList(LinkList* list, int pos);
//查找
int Find_LinkList(LinkList* list, LinkNode* data, COMPARENODE compare);
//返回链表大小
int Size_LinkList(LinkList* list);
//打印
void Print_LinkList(LinkList* list, PRINTNODE print);
//释放链表内存
void FreeSpace_LinkList(LinkList* list);

#endif

#include"LinkList.h"

//初始化链表
LinkList* Init_LinkList() {
	LinkList* list = (LinkList*)malloc(sizeof(LinkList));
	list->head.next = NULL;
	list->size = 0;
	return list;
}
//插入
void Insert_LinkList(LinkList* list, int pos, LinkNode* data) {
	if (list == NULL) {
		return;
	}

	if (data == NULL) {
		return;
	}

	if (pos < 0 || pos > list->size) {
		pos = list->size;
	}

	//查找插入位置
	LinkNode* pCurrent = &(list->head);
	for (int i = 0; i < pos; i++) {
		pCurrent = pCurrent->next;
	}

	//插入新节点
	data->next = pCurrent->next;
	pCurrent->next = data;

	list->size++;
}
//删除
void Remove_LinkList(LinkList* list, int pos) {
	if (list == NULL) {
		return;
	}

	if (pos < 0 || pos >= list->size) {
		return;
	}

	//辅助指针变量
	LinkNode* pCurrent = &(list->head);
	for (int i = 0; i < pos; i++) {
		pCurrent = pCurrent->next;
	}

	//删除结点
	pCurrent->next = pCurrent->next->next;

	list->size--;
}
//查找
int Find_LinkList(LinkList* list, LinkNode* data, COMPARENODE compare) {
	if (list == NULL) {
		return -1;
	}

	if (data == NULL) {
		return -1;
	}

	//赋值指针变量
	LinkNode* pCurrent = list->head.next;
	int index = 0;
	int flag = -1;
	while (pCurrent != NULL) {
		if (compare(pCurrent, data) == 0) {
			flag = index;
			break;
		}
		pCurrent = pCurrent->next;
		index++;
	}

	return flag;
}
//返回链表大小
int Size_LinkList(LinkList* list) {
	return 0;
}
//打印
void Print_LinkList(LinkList* list, PRINTNODE print) {
	if (list == NULL) {
		return;
	}

	//辅助指针
	LinkNode* pCurrent = list->head.next;
	while (pCurrent != NULL) {
		print(pCurrent);
		pCurrent = pCurrent->next;
	}
}

//释放链表内存
void FreeSpace_LinkList(LinkList* list) {
	if (list == NULL) {
		return;
	}

	free(list);
}

#define _CRT_SECURE_NO_WARNINGS
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "LinkList.h"

typedef struct PERSON {
	LinkNode node;
	char name[64];
	int age;
}Person;

void MyPrint(LinkNode* data) {
	Person*  p = (Person*)data;
	printf("Name:%s Age:%d\n", p->name, p->age);
}

int MyCompare(LinkNode* node1, LinkNode* node2) {
	Person* p1 = (Person*)node1;
	Person* p2 = (Person*)node2;

	if (strcmp(p1->name, p2->name) == 0 && p1->age == p2->age) {
		return 0;
	}
	return -1;
}

int main(void) {
	//创建链表
	LinkList* list = Init_LinkList();

	//创建数据
	Person p1, p2, p3, p4, p5;
	strcpy(p1.name, "aaa");
	strcpy(p2.name, "bbb");
	strcpy(p3.name, "ccc");
	strcpy(p4.name, "ddd");
	strcpy(p5.name, "eee");

	p1.age = 10;
	p2.age = 20;
	p3.age = 30;
	p4.age = 40;
	p5.age = 50;

	//将结点插入链表
	Insert_LinkList(list, 0, (LinkNode*)&p1);
	Insert_LinkList(list, 0, (LinkNode*)&p2);
	Insert_LinkList(list, 0, (LinkNode*)&p3);
	Insert_LinkList(list, 0, (LinkNode*)&p4);
	Insert_LinkList(list, 0, (LinkNode*)&p5);

	//打印
	Print_LinkList(list, MyPrint);

	//删除结点
	Remove_LinkList(list, 2);

	//打印
	printf("---------------\n");
	Print_LinkList(list, MyPrint);

	//查找
	Person findP;
	strcpy(findP.name, "bbb");
	findP.age = 20;
	int pos = Find_LinkList(list, (LinkNode*)&findP, MyCompare);
	printf("位置:%d\n", pos);

	//释放链表内存
	FreeSpace_LinkList(list);

	system("pause");
	return 0;
}