考研数据结构之单链代码
Posted 啊~小 l i
tags:
篇首语:本文由小常识网(cha138.com)小编为大家整理,主要介绍了考研数据结构之单链代码相关的知识,希望对你有一定的参考价值。
王道版单链表代码
结构体定义
typedef struct LNode
ElemType data;
struct LNode *next;
LNode, *LinkList;
单链表的建立
头插法
LinkList List_HeadInsert(LinkList &L)
LNode *s;
ElemType x;
scanf("%d",&x);
while(x!=9999)
s = (LNode*)malloc(sizeof(LNode));
s->data=x;
s->next = L->next;
L->next = s;
scanf("%d",&x);
return L;
尾插法
LinkList List_TailInsert(LinkList &L)
ElemType x;
L = (LinkList)malloc(sizeof(LinkList));
LNode *s,*r = L; //*r为尾指针
scanf("%d",&x);
while(x!=9999)
s=(LNode*)malloc(sizeof(LNode));
s->data=x;
r->next = s;
r=s;
scanf("%d",&x);
r->next=NULL;
return L;
单链表的的插入
带头节点
bool ListInsert(LinkList &L,int i,ElemType e)
if(i<1)
return false;
LNode *p = L;
int j=0;
while(j<i-1&&p!=NULL)
p=p->next;
j++;
if(p==NULL)
return false;
LNode *s = (LNode*)malloc(sizeof(LNode));
s->data = e;
s->next = p->next;
p->next = s;
return true;
不带头节点
bool ListInsert_WithnoHead(LinkList &L,int i, ElemType e)
if(i<1)
return false;
if(i==1)
LNode *s = (LNode*)malloc(sizeof(LNode));
s->data = e;
s -> next = L;
L = s;
return true;
LNode *p = L;
int j = 1;
while(j<i-1&&p!=NULL)
p = p->next;
j++;
if(p==NULL)
return false;
LNode *s = (LNode*)malloc(sizeof(LNode));
s->data = e;
s->next = p->next;
p->next = s;
return true;
在某节点后插入元素(后插操作)
bool InsertNextNode(LNode *p,ElemType e)
if(p==NULL)
return false;
LNode *s = (LNode*)malloc(sizeof(LNode));
if(s==NULL)
return false;
s->data = e;
s->next = p->next;
p->next = s;
return true;
在某节点前插入元素(前插操作)
bool InsertNextNode(LNode *p,ElemType e)
if(p==NULL)
return false;
LNode *s = (LNode*)malloc(sizeof(LNode));
if(s==NULL)
return false;
s->data = e;
s->next = p->next;
p->next = s;
return true;
单链表的删除
bool ListDelete(LinkList &L,int i,ElemType &e)
if(i<1)
return false;
int j = 0;
LNode *p = L;
while(p!=NULL&&j<i-1)
p=p->next;
j++;
if(p==NULL)
return false;
if(p->next==NULL)
return false;
LNode *q = p->next;
e = q->data;
p->next=q->next;
free(q);
return true;
单链表的查找
按位查找
LNode *GetElem(LinkList L, int i)
if(i<0)
return NULL;
LNode *p=L;
int j = 0;
while(p!=NULL&&j<i)
p=p->next;
j++;
return p;
按位查找
LNode *LocateElem(LinkList L,ElemType e)
LNode *p = L->next;
while(p!=NULL&&p->data!=e)
p = p->next;
return p;
附录(全代码;含测试!)
#include <stdio.h>
#include <malloc.h>
#define ElemType int
typedef struct LNode
ElemType data;
struct LNode *next;
LNode, *LinkList;
// 头插法建立链表
LinkList List_HeadInsert(LinkList &L)
LNode *s;
ElemType x;
scanf("%d",&x);
while(x!=9999)
s = (LNode*)malloc(sizeof(LNode));
s->data=x;
s->next = L->next;
L->next = s;
scanf("%d",&x);
return L;
// 尾插法建立链表(带头节点)
LinkList List_TailInsert(LinkList &L)
ElemType x;
L = (LinkList)malloc(sizeof(LinkList));
LNode *s,*r = L; //*r为尾指针
scanf("%d",&x);
while(x!=9999)
s=(LNode*)malloc(sizeof(LNode));
s->data=x;
r->next = s;
r=s;
scanf("%d",&x);
r->next=NULL;
return L;
// 按位查找(返回第i个元素)[带头节点]
LNode *GetElem(LinkList L, int i)
if(i<0)
return NULL;
LNode *p=L;
int j = 0;
while(p!=NULL&&j<i)
p=p->next;
j++;
return p;
//按值查找
LNode *LocateElem(LinkList L,ElemType e)
LNode *p = L->next;
while(p!=NULL&&p->data!=e)
p = p->next;
return p;
//求表长度
int length(LinkList L)
int length = 0;
LNode *p = L;
while(p->next!=NULL)
length++;
p=p->next;
return length;
//在某个节点后插入节点
bool InsertNextNode(LNode *p,ElemType e)
if(p==NULL)
return false;
LNode *s = (LNode*)malloc(sizeof(LNode));
if(s==NULL)
return false;
s->data = e;
s->next = p->next;
p->next = s;
return true;
// 在某个节点前插入元素
bool InsertPriorNode(LNode *p, ElemType e)
if(p==NULL)
return false;
LNode *s = (LNode*)malloc(sizeof(LNode));
if(s==NULL)
return false;
s->next = p->next;
p->next = s;
s->data = p->data;
p->data = e;
return true;
// 按位序删除
bool ListDelete(LinkList &L,int i,ElemType &e)
if(i<1)
return false;
int j = 0;
LNode *p = L;
while(p!=NULL&&j<i-1)
p=p->next;
j++;
if(p==NULL)
return false;
if(p->next==NULL)
return false;
LNode *q = p->next;
e = q->data;
p->next=q->next;
free(q);
return true;
// 按位序插入,在第i个位置插入e[带头节点]
bool ListInsert(LinkList &L,int i,ElemType e)
if(i<1)
return false;
LNode *p = L;
int j=0;
while(j<i-1&&p!=NULL)
p=p->next;
j++;
if(p==NULL)
return false;
LNode *s = (LNode*)malloc(sizeof(LNode));
s->data = e;
s->next = p->next;
p->next = s;
return true;
// 按位序插入 [不带头节点]
bool ListInsert_WithnoHead(LinkList &L,int i, ElemType e)
if(i<1)
return false;
if(i==1)
LNode *s = (LNode*)malloc(sizeof(LNode));
s->data = e;
s -> next = L;
L = s;
return true;
LNode *p = L;
int j = 1;
while(j<i-1&&p!=NULL)
p = p->next;
j++;
if(p==NULL)
return false;
LNode *s = (LNode*)malloc(sizeof(LNode));
s->data = e;
s->next = p->next;
p->next = s;
return true;
int main()
LinkList L;
L = List_TailInsert(L);
bool flag = ListInsert(L,1,66);
LNode *a = GetElem(L,1);
printf("%d\\n",a->data);
LNode *s = LocateElem(L,99);
printf("%d\\n",s->data);
printf("%d\\n",length(L));
int tep;
ListDelete(L,1,tep);
printf("%d",tep);
printf("%d",GetElem(L,1)->data);
以上是关于考研数据结构之单链代码的主要内容,如果未能解决你的问题,请参考以下文章
(王道408考研数据结构)第二章线性表-第三节1:单链表的定义及其操作(插入和删除,建立之尾插和头插)