笔记

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

#define CardNumber 13

typedef struct node
{
    int data;
    struct node *next;
}sqlist,*linklist;

linklist CreateLinkList()
{
    linklist head = NULL;
    linklist s,r;
    int i;

    r = head;

    for(i=1; i<=CardNumber; i++)
    {
        s = (linklist)malloc(sizeof(sqlist));
        s->data = 0;

        if(head == NULL)
        {
            head = s;
        }
        else
        {
            r->next = s;
        }
        r = s;
        r->next = head;
    }
    return head;
}

//发牌顺序计算
void Magician(linklist head)
{
    linklist pa;
    int j;
    int Countnumber = 2;

    pa = head;
    pa->data = 1;//阿权，这条语句一执行，pa->next->data也会被赋值为1

    while(1)
    {
        for(j=0; j<Countnumber; j++)
        {
            pa = pa->next;
            if(pa->data != 0)
            {
                pa->next;
                j--;
            }
        }


        if(pa->data == 0)
        {
            pa->data = Countnumber;
            Countnumber++;

            if(Countnumber == 14)
            {
                break;
            }
        }

    }
}

//销毁工作
void DestoryList(linklist *list)
{
    linklist ptr = *list;
    linklist buff[CardNumber];
    int i=0;

    while(i < CardNumber)
    {
        buff[i++] = ptr;
        ptr = ptr->next;
    }

    for(i=0; i<CardNumber; ++i)
    {
        free(buff[i]);
    }

    *list = 0;
}



int main()
{
    linklist p;
    int i;

    p = CreateLinkList();
    Magician(p);

    printf("按如下顺序排列:\n");
    for(i=0; i<CardNumber; ++i)
    {
        printf("黑桃%d ",p->data);
        p = p->next;
    }

    DestoryList(&p);

    return 0;
}