[C++知识库]自组织表-移至开头法

#include<stdio.h>
#include<stdlib.h>
#define IS_FULL(ptr)  (!(ptr))
typedef int T;
typedef struct node {
	T Key;
	T Data;
	struct node* Link;
}Node;

Node* BuildList() {
	Node* p;
	Node* r = NULL;
	Node* first = NULL;
	int i;
	for (i = 0; i < 10;i++) {
		p = (Node*)malloc(sizeof(Node));
		p->Key = 2 * i + 1;
		p->Data = 2 * i + 2;
		p->Link = NULL;
		if (first != NULL) {
			r->Link = p;
		}
		else {
			first = p;
		}
		r = p;
	}
	return first;
}
Node* SearchList(Node* first, int k) {
	Node* p;
	Node* r;
	int i=1;
	r = (Node*)malloc(sizeof(Node));
	p = (Node*)malloc(sizeof(Node));
	r ->Link= first;
	p = first;
	if (first->Key==k) {
		i = 0;
	}
	while (p != NULL) {
		if (p->Key != k) {
			r = r->Link;
			p = p->Link;
		}
		else {
			printf("%d\t%d\n",p->Key,p->Data);
			if (i) {
				r->Link = p->Link;
				p->Link = first;
			}
			break;
		}
	}	
	if (p==NULL) {
		printf("Can't find it!\n");
		exit(1);
	}
	else {
		return p;
	}
	
}
void PrintList(Node* first) {
	printf("\n the list contains: \n");
	for (; first; first = first->Link) {
		printf("%d\t%d\n", first->Key, first->Data);
	}
	printf("\n\n");
}
void Clear(Node** first) {
	Node* p;
	p = *first;
	while (*first) {
		p = (*first)->Link;
		free(*first);
		*first = p;
	}
}
void main() {
	Node* lst;
	lst = BuildList();
	PrintList(lst);
	lst=SearchList(lst, 9);
	PrintList(lst);
	lst = SearchList(lst, 13);
	PrintList(lst);
	lst = SearchList(lst, 11);
	PrintList(lst);
	lst = SearchList(lst, 11);
	PrintList(lst);
	lst = SearchList(lst, 11);
	PrintList(lst);
	//Clear(&lst);
	//PrintList(lst);
}

the list contains:
1 2
3 4
5 6
7 8
9 10
11 12
13 14
15 16
17 18
19 20

9 10

the list contains:
9 10
1 2
3 4
5 6
7 8
11 12
13 14
15 16
17 18
19 20

13 14

the list contains:
13 14
9 10
1 2
3 4
5 6
7 8
11 12
15 16
17 18
19 20

11 12

the list contains:
11 12
13 14
9 10
1 2
3 4
5 6
7 8
15 16
17 18
19 20

11 12

the list contains:
11 12
13 14
9 10
1 2
3 4
5 6
7 8
15 16
17 18
19 20

11 12

the list contains:
11 12
13 14
9 10
1 2
3 4
5 6
7 8
15 16
17 18
19 20

C:\C程序&C语言数据结构\C语言数据结构_从入门到入坑\7-15\移至开头-自组织表\Debug\移至开头-自组织表.exe (进程 6692)已退出，代码为 0。
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