C data structure loop link list implements Joseph's ring
The codes in this article are all run in the environment of turbo C 2.0 and get the correct results. This program uses a circular linked list to realize the Joseph ring, that is, there is an m individual standing in a circle, starting from a person (the first in the queue), and agreeing to delist the nth person starting from a certain number, and his next person reporting from the beginning, and then another person reporting n is delisted. The result of this program is the order of delisting of the personnel.
#include<>
#include<>
#define OK 1
#define NULL 0
typedef int status;
typedef int ElemType;
typedef struct LNode{
ElemType data;
struct LNode *next;
}LNode,*LinkList;
LinkList L;
status CreateList_L(LinkList *L,int m)
{LNode *p,*q;
int i;
*L=(LinkList)malloc(sizeof(LNode)) ;
q=*L;
q->data=1;
for(i=2;i<=m;i++)
{p=(LinkList)malloc(sizeof(LNode));
p->data=i;
p->next=NULL;
q->next=p;
q=p;
}
q->next=*L;
return OK;
}
status function(LinkList *L,int m,int n)
{LNode *p,*q;
int i,j=1,k=1;
p=*L;
q=p;
do
{p=q->next;j++;
if(j%n==0)
{printf("%3d",p->data);
q->next=p->next;
k++;
free(p);
}
else q=p;
}while(k<=m);
return OK;
}
void main()
{int m,n;
clrscr();
gotoxy(5,8);
printf("***************************************************\n");
gotoxy(5,9);
printf("**** the list's length is : ****\n");
gotoxy(35,9);
scanf("%d",&m);
gotoxy(5,10);
printf("****the xunhuan's length is : ****\n");
gotoxy(35,10);
scanf("%d",&n);
gotoxy(5,11);
printf("***************************************************\n");
CreateList_L(&L, m);
function(&L,m,n);
}
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