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注：测试程序代码和约瑟夫环问题求解不能同时运行，但是运行时需要包含头文件和函数体

circule_link_list.h头文件

文件:circule_link_list.h
代码:
#ifndef _CIRCULE_LINK_LIST_H
#define _CIRCULE_LINK_LIST_H

typedef void CirculeLinkList;
typedef void CirculeLinkListNode;

typedef struct TagCirculeLinkListNode
{
    struct TagCirculeLinkListNode * next;
}TagCirculeLinkListNode;

//创建一个循环链表
CirculeLinkList * LinkLIst_Creat();

//销毁一个循环链表
void LinkList_Destory(CirculeLinkList * list);

//清理一个循环链表
void LinkList_Clear(CirculeLinkList * list);

//求链表长度
int LinkList_Length(CirculeLinkList * list);

//插入节点
int LinkList_Insert(CirculeLinkList * list, CirculeLinkListNode * node, int pos);

//获取链表节点信息
CirculeLinkListNode * LinkList_Get(CirculeLinkList * list, int pos);

//删除节点
CirculeLinkListNode * LinkList_Delete(CirculeLinkList * list, int pos);
//add--->新增游标概念

//删除游标指向的节点
CirculeLinkListNode * CirculeLinkList_Delete(CirculeLinkList * list, CirculeLinkListNode * node);

//重置游标
CirculeLinkListNode * CirculeLinkList_Reset(CirculeLinkList * list);

//获取游标位置
CirculeLinkListNode * CirculeLinkList_Current(CirculeLinkList * list);

//游标下移
CirculeLinkListNode * CirculeLinkList_Next(CirculeLinkList * list);

#endif

circule_link_list.c函数体

文件:circule_link_list.c
代码:
#define _CRT_SECURE_NO_WARNINGS
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <windows.h>
#include "circule_link_list.h"

typedef struct TagCircleLink
{
    TagCirculeLinkListNode head;
    TagCirculeLinkListNode * vernier;//vernier游标
    int length;
}TagCircleLink;

//创建一个循环链表
CirculeLinkList * LinkLIst_Creat()
{
    TagCircleLink * begin;
    begin = (TagCircleLink *)malloc(sizeof(TagCircleLink));
    if (NULL == begin)
    {
        printf("(TagCircleLink *)malloc(sizeof(TagCircleLink)) error");
        return NULL;
    }
    begin->vernier = NULL;
    begin->length = 0;
    begin->head.next = NULL;
    return (void *)begin;
}
//销毁一个循环链表
void LinkList_Destory(CirculeLinkList * list)
{
    if (NULL != list)
    {
        free(list);
    }
}
//清理一个循环链表
void LinkList_Clear(CirculeLinkList * list)
{
    TagCircleLink * begin;
    begin = (TagCircleLink *)list;
    begin->head.next = NULL;
    begin->length = 0;
    begin->vernier = NULL;
}
//求链表长度
int LinkList_Length(CirculeLinkList * list)
{
    TagCircleLink * begin;
    begin = (TagCircleLink *)list;
    return begin->length;
}
//插入节点
int LinkList_Insert(CirculeLinkList * list, CirculeLinkListNode * node, int pos)
{
    if (NULL == list || NULL == node || pos < 0)
    {
        return -1;
    }
    TagCircleLink * begin = NULL;
    TagCirculeLinkListNode * insert = NULL, * tmp = NULL;

    begin = (TagCircleLink *)list;
    insert = (TagCirculeLinkListNode *)node;
    if (NULL == begin->head.next)//第一个插入的元素特殊处理
    {
        begin->head.next = insert;
        insert->next = insert;
        begin->vernier = insert;//游标指向0号结点
        begin->length++;
        return 0;
    }

    //如果插入的是零号位置特殊处理，插入零号位置相当于插入在最后一个位置，然后把头结点后移一位,
    if (pos > begin->length)
    {
        pos = begin->length;
    }
    if (0 == pos)
    {
        LinkList_Insert(list, node, begin->length);
        begin->head.next = insert;
        begin->vernier = insert;
        return 0;
    }

    tmp = begin->head.next;
    for (int i = 0; i < pos - 1; i++)
    {
        tmp = tmp->next;
    }
    insert->next = tmp->next;
    tmp->next = insert;
    begin->length++;
    return 0;
}
//获取链表节点信息
CirculeLinkListNode * LinkList_Get(CirculeLinkList * list, int pos)
{
    if (NULL == list  || pos < 0)
    {
        return NULL;
    }
    TagCircleLink * begin = NULL;
    TagCirculeLinkListNode * tmp = NULL;
    begin = (TagCircleLink *)list;
    tmp = begin->head.next;
    for (int i = 0; i < pos; i++)
    {
        tmp = tmp->next;
    }
    return (void *)tmp;
}
//删除节点
CirculeLinkListNode * LinkList_Delete(CirculeLinkList * list, int pos)
{
    if (NULL == list || pos < 0)
    {
        return NULL;
    }
    TagCircleLink * begin = NULL;
    TagCirculeLinkListNode * tmp = NULL, * ret = NULL;
    begin = (TagCircleLink *)list;
    tmp = begin->head.next;
    if (pos >= begin->length)
    {
        return NULL;
    }
    if (begin->vernier == (TagCirculeLinkListNode *)LinkList_Get(list, pos))//如果删除的结点是游标指向的位置，游标下移
    {
        begin->vernier = begin->vernier->next;
    }
    if (begin->length == 1 && pos == 0)//如果删除的最后一个结点
    {
        CirculeLinkListNode * ret = begin->head.next;
        begin->length--;
        begin->vernier = NULL;
        begin->head.next = NULL;
        return ret;
    }
    if (0 == pos)//如果是删除的头号结点特殊处理
    {
        begin->head.next = begin->head.next->next;//头结点移到一号位置
        CirculeLinkListNode * sign = LinkList_Delete(list, begin->length - 1);//删除最后一个元素
        if (NULL != sign)
        {
            return sign;
        }
        else
            return NULL;
    }


    for (int i = 0; i < pos - 1; i++)//删除普通结点
    {
        tmp = tmp->next;
    }
    ret = tmp->next;
    tmp->next = tmp->next->next;
    begin->length--;
    return (void *)ret;
}

//add--->新增游标概念
//删除游标指向的节点
CirculeLinkListNode * CirculeLinkList_Delete(CirculeLinkList * list, CirculeLinkListNode * node)
{
    //node是要删除的位置
    if (NULL == list || NULL == node)
    {
        return NULL;
    }
    int i = 0;
    TagCirculeLinkListNode * del = (TagCirculeLinkListNode *)node, * tmp = NULL;
    TagCircleLink * begin = (TagCircleLink *)list;
    tmp = begin->head.next;
    for (i = 0; i <= begin->length; i++)//找到要删除的结点的位置
    {
        if (i == begin->length)
        {
            return NULL;
        }
        if (del == tmp)
        {
            break;
        }
        tmp = tmp->next;
    }
    tmp = (TagCirculeLinkListNode *)LinkList_Delete(list, i);//移动结点
    if (tmp != NULL)
    {
        return tmp;
    }
    else
        return NULL;

}
//重置游标
CirculeLinkListNode * CirculeLinkList_Reset(CirculeLinkList * list)
{
    if (NULL == list)
    {
        return NULL;
    }
    TagCircleLink * begin = NULL;
    begin = (TagCircleLink *)list;

    begin->vernier = begin->head.next;
    return (CirculeLinkListNode *)begin->vernier;
}
//获取游标位置
CirculeLinkListNode * CirculeLinkList_Current(CirculeLinkList * list)
{
    if (NULL == list)
    {
        return NULL;
    }
    TagCircleLink * begin = (TagCircleLink *)list;
    return (CirculeLinkListNode *)begin->vernier;

}
//游标下移
CirculeLinkListNode * CirculeLinkList_Next(CirculeLinkList * list)
{
    if (NULL == list)
    {
        return NULL;
    }
    TagCircleLink * begin = (TagCircleLink *)list;
    (TagCirculeLinkListNode *)begin->vernier;
    begin->vernier = begin->vernier->next;
    return (CirculeLinkListNode *)begin->vernier;
}

Joseph_question.c约瑟夫环问题求解

文件:Joseph_question.c
代码:
#define _CRT_SECURE_NO_WARNINGS
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <windows.h>
#include "circule_link_list.h"

typedef struct Teacher
{
    TagCirculeLinkListNode * next;
    int age;
    char name[64];
}Teacher;

int main()
{
    Teacher t1;
    Teacher t2;
    Teacher t3;
    Teacher t4;
    Teacher t5;
    Teacher t6;
    Teacher t7;
    Teacher t8;
    Teacher t9;
    t1.age = 21;
    t2.age = 22;
    t3.age = 23;
    t4.age = 24;
    t5.age = 25;
    t6.age = 26;
    t7.age = 27;
    t8.age = 28;
    t9.age = 29;

    CirculeLinkList * list;
    Teacher * tmp;
    CirculeLinkList * ret = NULL;
    //创建链表
    list = LinkLIst_Creat();

    //插入元素
    LinkList_Insert(list, (CirculeLinkListNode *)&t1, 0);
    LinkList_Insert(list, (CirculeLinkListNode *)&t2, 0);
    LinkList_Insert(list, (CirculeLinkListNode *)&t3, 0);
    LinkList_Insert(list, (CirculeLinkListNode *)&t4, 0);
    LinkList_Insert(list, (CirculeLinkListNode *)&t5, 0);
    LinkList_Insert(list, (CirculeLinkListNode *)&t6, 0);
    LinkList_Insert(list, (CirculeLinkListNode *)&t7, 0);
    LinkList_Insert(list, (CirculeLinkListNode *)&t8, 0);
    LinkList_Insert(list, (CirculeLinkListNode *)&t9, 0);

    //遍历元素
    for (int i = 0; i < LinkList_Length(list); i++)
    {
        Teacher *tmp = NULL;
        ret = LinkList_Get(list, i);
        tmp = (Teacher *)ret;
        printf("age = %d\n", tmp->age);
    }

    printf("约瑟夫问题求解\n");
    for (int i = 0; i < LinkList_Length(list);)
    {
        for (int j = 0; j < 2; j++)
        {
            CirculeLinkList_Next(list);
        }
        ret = CirculeLinkList_Delete(list, CirculeLinkList_Current(list));
        if (ret != NULL)
        {
            tmp = (Teacher *)ret;
            printf("age = %d\n", tmp->age);
        }
        else
        {
            printf("error\n");
        }
    }
    system("pause");
    return 0;
}

测试程序代码

程序测试代码
#define _CRT_SECURE_NO_WARNINGS
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <windows.h>
#include "circule_link_list.h"

typedef struct Teacher
{
    TagCirculeLinkListNode * next;
    int age;
    char name[64];
}Teacher;

int main()
{
    Teacher t1;
    Teacher t2;
    Teacher t3;
    Teacher t4;
    Teacher t5;
    t1.age = 21;
    t2.age = 22;
    t3.age = 23;
    t4.age = 24;
    t5.age = 25;
    CirculeLinkList * list;
    CirculeLinkList * ret = NULL;
    //创建链表
    list = LinkLIst_Creat();

    //插入元素
    LinkList_Insert(list, (CirculeLinkListNode *)&t1, 0);
    LinkList_Insert(list, (CirculeLinkListNode *)&t2, 1);
    LinkList_Insert(list, (CirculeLinkListNode *)&t3, 0);

    //CirculeLinkListNode * LinkList_Get(CirculeLinkList * list, int pos);
    //遍历元素
    for (int i = 0; i < LinkList_Length(list); i++)
    {
        Teacher *tmp = NULL;
        ret = LinkList_Get(list, i);
        tmp = (Teacher *)ret;
        printf("age = %d\n", tmp->age);
    }

    ////删除元素 --- > 测试通过
    //for (int i = 0; i < LinkList_Length(list);)
    //{
    // ret = LinkList_Delete(list, 0);
    // if (ret == NULL)
    // {
    // printf("删除失败!!!\n");
    // break;
    // }
    // else
    // {
    // Teacher *tmp = NULL;
    // tmp = (Teacher *)ret;
    // printf("被删除的年龄是 age = %d\n", tmp->age);
    // }
    //}

    //测试通过
    //ret = CirculeLinkList_Delete(list, (CirculeLinkListNode *)& t1);
    //if (ret == NULL)
    //{
    // printf("失败!!!\n");
    //}
    //else
    //{
    // Teacher *tmp = NULL;
    // tmp = (Teacher *)ret;
    // printf("年龄是 age = %d\n", tmp->age);
    //}
    ////遍历元素
    //for (int i = 0; i < LinkList_Length(list); i++)
    //{
    // Teacher *tmp = NULL;
    // ret = LinkList_Get(list, i);
    // tmp = (Teacher *)ret;
    // printf("age = %d\n", tmp->age);
    //}

    //测试通过
    //ret = CirculeLinkList_Reset(list);
    //Teacher *tmp = NULL;
    //tmp = (Teacher *)ret;
    //printf("年龄是 age = %d\n", tmp->age);

    ret = CirculeLinkList_Next(list);
    Teacher *tmp = NULL;
    tmp = (Teacher *)ret;
    printf("年龄是 age = %d\n", tmp->age);

    /* //创建一个循环链表 CirculeLinkList * LinkLIst_Creat(); //销毁一个循环链表 void LinkList_Destory(CirculeLinkList * list); //清理一个循环链表 void LinkList_Clear(CirculeLinkList * list); //求链表长度 int LinkList_Length(CirculeLinkList * list); //插入节点 int LinkList_Insert(CirculeLinkList * list, CirculeLinkListNode * node, int pos); //获取链表节点信息 CirculeLinkListNode * LinkList_Get(CirculeLinkList * list, int pos); //删除节点 CirculeLinkListNode * LinkList_Delete(CirculeLinkList * list, int pos); //add--->新增游标概念 //删除游标指向的节点 CirculeLinkListNode * CirculeLinkList_Delete(CirculeLinkList * list, CirculeLinkListNode * node); //重置游标 CirculeLinkListNode * CirculeLinkList_Reset(CirculeLinkList * list); //获取游标位置 CirculeLinkListNode * CirculeLinkList_Current(CirculeLinkList * list); //游标下移 CirculeLinkListNode * CirculeLinkList_Next(CirculeLinkList * list); */
    system("pause");
    return 0;
}