C _数据结构 _线性表的顺序存储

#ifndef  __MY_SEQLIST_H__ 
#define __MY_SEQLIST_H__

typedef void SeqList;
typedef void SeqListNode;

//链表 创建
SeqList* SeqList_Create(int capacity);

//链表 销毁
void SeqList_Destroy(SeqList* list);

////链表 清空
void SeqList_Clear(SeqList* list);

//链表 长度
int SeqList_Length(SeqList* list);


//链表 容量 
int SeqList_Capacity(SeqList* list);

//链表 在某一个位置 插入元素
int SeqList_Insert(SeqList* list, SeqListNode* node, int pos);

//获取某一个位置的链表结点
SeqListNode* SeqList_Get(SeqList* list, int pos);

//删除某一个位置的结点
SeqListNode* SeqList_Delete(SeqList* list, int pos);


#endif  //__MY_SEQLIST_H__

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

 
//用数组来模拟线性表
typedef struct _tag_SeqList
{
    int        capacity;
    int        length;
    //int *node[100];
    int        **node;  //指针数组
    //int node[capacity] //
    //int *node[capacity];

    //int *node; //   int node[i]===> *(node+i)
}TSeqList;


//链表 创建
SeqList* SeqList_Create(int capacity) //O(1)
{
    int            ret;
    TSeqList    *tmp = NULL;
    tmp = (TSeqList *)malloc(sizeof(TSeqList));
    if (tmp == NULL)
    {
        ret =1;
        printf("func SeqList_Create() err :%d \n", ret);
        return NULL;
    }
    memset(tmp, 0, sizeof(TSeqList));//置为0
    tmp->capacity = capacity;
    tmp->length = 0;
    tmp->node = (int **)malloc(sizeof(void *) * capacity);
    if (tmp->node == NULL)
    {
        ret = 2;
        printf("func SeqList_Create() malloc err :%d \n", ret);
        return NULL;
    }
    memset(tmp->node, 0, sizeof(void *) * capacity);

    return tmp;
}

//链表 创建
int SeqList_Create2(int capacity, SeqList**handle)
{
    int            ret = 0;
    TSeqList    *tmp = NULL;
    tmp = (TSeqList *)malloc(sizeof(TSeqList));
    if (tmp == NULL)
    {
        ret =1;
        printf("func SeqList_Create2() err :%d \n", ret);
        return ret;
    }
    memset(tmp, 0, sizeof(TSeqList));
    tmp->capacity = capacity;
    tmp->length = 0;
    tmp->node = (int **)malloc(sizeof(void *) * capacity);
    if (tmp->node == NULL)
    {
        ret = 2;
        printf("func SeqList_Create2() malloc err :%d \n", ret);
        return ret;
    }

    *handle = tmp;
    return ret;
}

//链表 销毁
void SeqList_Destroy(SeqList* list)  //O(1)
{
    TSeqList    *tmp = NULL;
    if (list == NULL)
    {
        return ;
    }

    tmp = (TSeqList *)list;

    if (tmp->node != NULL)
    {
        free(tmp->node);
    }
    free(tmp);
    return ;
}

////链表 清空
void SeqList_Clear(SeqList* list) //O(1)
{
    TSeqList    *tmp = NULL;
    if (list == NULL)
    {
        return ;
    }

    tmp = (TSeqList *)list;
    tmp->length = 0;
    memset(tmp->node, 0, (tmp->capacity * sizeof(void *)) );

    return ;
}

//链表 长度
int SeqList_Length(SeqList* list) //O(1)
{
    TSeqList    *tmp = NULL;
    if (list == NULL)
    {
        return -1;
    }
    tmp = (TSeqList *)list;

    return tmp->length;
}


//链表 容量 
int SeqList_Capacity(SeqList* list) //O(1)
{
    TSeqList    *tmp = NULL;
    if (list == NULL)
    {
        return -1;
    }
    tmp = (TSeqList *)list;
    return tmp->capacity;
}

//链表 在某一个位置 插入元素
int SeqList_Insert(SeqList* list, SeqListNode* node, int pos)  //O(n)
{
    TSeqList    *tList = NULL;
    int i = 0;
    if (list == NULL ||  node==NULL)
    {
        return -1;
    }
    tList = (TSeqList *)list;
    //如果满了 
    if (tList->length >= tList->capacity)
    {
        return -2;
    }

    //pos位置的容错处理
    if (pos > tList->length )
    {
        pos = tList->length;
    }

    for (i=tList->length; i>pos; i--)  //n
    {
        tList->node[i] = tList->node[i-1];
    }

    tList->node[i] = (int* )node; //ok
    tList->length ++;

    return 0;
}

//获取某一个位置的链表结点
SeqListNode* SeqList_Get(SeqList* list, int pos)  //O(1)
{
    TSeqList    *tList = NULL;
    SeqListNode *tmp = NULL;

    tList = (TSeqList *)list;

    if (list == NULL || pos<0 || pos >=tList->length )
    {
        return NULL;
    }
    tmp = tList->node[pos];

    return tmp;
}

//删除某一个位置的结点
SeqListNode* SeqList_Delete(SeqList* list, int pos)  ////O(n)
{
    int            i = 0;
    TSeqList    *tList = NULL;
    SeqListNode *tmp = NULL; 

    tList = (TSeqList *)list;
    if (list == NULL || pos <0 || pos >= tList->length)
    {
        return NULL;
    }
    tmp = tList->node[pos];

    // pos = 3
    for (i=pos+1; i<tList->length; i++)
    {
        tList->node[i-1] = tList->node[i];

    }
    tList->length --;
    return tmp;
}

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

#include "seqlist.h"

typedef struct _Teacher
{
    char name[32];
    int age ;
}Teacher;

void main()
{
    int            ret = 0, i = 0;
    SeqList *    list;

    Teacher t1, t2, t3;
    t1.age = 31;
    t2.age = 32;
    t3.age = 33;

    list = SeqList_Create(10);

    //思考1: 如何实现 链表的api(链表的算法) 和 具体的数据分离
    //思考2: 链表库(业务逻辑)  测试程序的业务逻辑  结点的生命周期 归谁管?

    ret = SeqList_Insert(list, (SeqListNode *)&t1, 0);  //头插法
    ret = SeqList_Insert(list, (SeqListNode *)&t2, 0);  //头插法
    ret = SeqList_Insert(list, (SeqListNode *)&t3, 0);  //头插法

    //遍历链表
    for (i=0; i<SeqList_Length(list); i++ )
    {
        Teacher *tmp = (Teacher *)SeqList_Get(list, i); //获取链表结点
        if (tmp == NULL)
        {
            printf("func SeqList_Get() err:%d \n ", ret);
            return ;
        }
        printf("age:%d \n", tmp->age);
    }

    //销毁链表
    while (SeqList_Length(list) > 0)
    {
        Teacher *tmp  =  (Teacher *)SeqList_Delete(list, 0);//
        if (tmp == NULL)
        {
            printf("func SeqList_Get() err:%d \n ", ret);
            return ;
        }
        printf("age:%d \n", tmp->age);
    }

    SeqList_Destroy(list);

    system("pause");

    return ;
}