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144 lines
2.6 KiB
C++
144 lines
2.6 KiB
C++
/**
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* @author huihut
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* @E-mail:huihut@outlook.com
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* @version 创建时间：2016年9月18日
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* 说明：本程序实现了一个单链表。
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*/
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#include "stdio.h"
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#include "stdlib.h"
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#include "malloc.h"
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//5个常量定义
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#define TRUE 1
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#define FALSE 0
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#define OK 1
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#define ERROR 0
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#define OVERFLOW -1
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//类型定义
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typedef int Status;
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typedef int ElemType;
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//测试程序长度定义
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#define LONGTH 5
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//链表的类型
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typedef struct LNode {
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ElemType data;
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struct LNode *next;
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} LNode, *LinkList;
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//创建包含n个元素的链表L，元素值存储在data数组中
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Status create(LinkList &L, ElemType *data, int n) {
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LNode *p, *q;
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int i;
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if (n < 0) return ERROR;
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L = NULL;
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p = L;
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for (i = 0; i < n; i++)
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{
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q = (LNode *)malloc(sizeof(LNode));
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if (NULL == q) return OVERFLOW;
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q->data = data[i];
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q->next = NULL;
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if (NULL == p) L = q;
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else p->next = q;
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p = q;
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}
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return OK;
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}
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//e从链表末尾入链表
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Status EnQueue_LQ(LinkList &L, ElemType &e) {
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LinkList p, q;
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if (NULL == (q = (LNode *)malloc(sizeof(LNode)))) return OVERFLOW;
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q->data = e;
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q->next = NULL;
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if (NULL == L) L = q;
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else
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{
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p = L;
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while (p->next != NULL)
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{
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p = p->next;
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}
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p->next = q;
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}
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return OK;
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}
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//从链表头节点出链表到e
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Status DeQueue_LQ(LinkList &L, ElemType &e) {
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if (NULL == L) return ERROR;
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LinkList p;
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p = L;
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e = p->data;
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L = L->next;
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free(p);
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return OK;
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}
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//遍历调用
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Status visit(ElemType e) {
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printf("%d\t", e);
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return OK;
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}
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//遍历单链表
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void ListTraverse_L(LinkList L, Status(*visit)(ElemType e))
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{
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if (NULL == L) return;
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for (LinkList p = L; NULL != p; p = p->next) {
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visit(p->data);
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}
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}
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int main() {
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int i;
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ElemType e, data[LONGTH] = { 1, 2, 3, 4, 5 };
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LinkList L;
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//显示测试值
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printf("---【单链表】---\n");
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printf("待测试元素为：\n");
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for (i = 0; i < LONGTH; i++) printf("%d\t", data[i]);
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printf("\n");
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//创建链表L
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printf("创建链表L\n");
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if (ERROR == create(L, data, LONGTH))
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{
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printf("创建链表L失败\n");
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return -1;
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}
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printf("成功创建包含%d个元素的链表L\n元素值存储在data数组中\n", LONGTH);
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//遍历单链表
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printf("此时链表中元素为：\n");
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ListTraverse_L(L, visit);
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//从链表头节点出链表到e
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printf("\n出链表到e\n");
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DeQueue_LQ(L, e);
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printf("出链表的元素为：%d\n", e);
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printf("此时链表中元素为：\n");
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//遍历单链表
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ListTraverse_L(L, visit);
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//e从链表末尾入链表
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printf("\ne入链表\n");
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EnQueue_LQ(L, e);
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printf("入链表的元素为：%d\n", e);
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printf("此时链表中元素为：\n");
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//遍历单链表
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ListTraverse_L(L, visit);
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printf("\n");
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getchar();
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return 0;
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} |