单链表相关接口介绍List.h
#define _CRT_SECURE_NO_WARNINGS
#ifndef __LIST_H__
#define __LIST_H__
#include
#include
#include
#include
typedef int SLTDataType;
typedef struct SListNode
{
SLTDataType _data;
struct SListNode* _next;
}SListNode;
typedef struct SList
{
SListNode* _head;
}SList;
void SListInit(SList* plist);
void SListDstory(SList* plist);
SListNode* BuySListNode(SLTDataType x);
void SListPushFront(SList* plist, SLTDataType x);
void SListPushBack(SList* plist,SLTDataType x);
void SListPopFront(SList* plist);
void SListPopBack(SList* plist);
SListNode* SListFind(SList* plist, SLTDataType x);
// 在pos的后面进行插入
void SListInsertAfter(SListNode* pos, SLTDataType x);
// 在pos的前面进行插入
void SListEraseAfter(SListNode* pos);
void SListRemove(SList* plist, SLTDataType x);
void SListPrint(SList* plist);
void TestSList();
void SListPopFront(SList* plist);
SListNode* SListFind(SList* plist, SLTDataType x);
// 在pos的后面进行插入
void SListInsertAfter(SListNode* pos, SLTDataType x);
// 在pos的前面进行插入
void SListEraseAfter(SListNode* pos);
void SListRemove(SList* plist, SLTDataType x);
void SListPrint(SList* plist);
void Listtest1();
#endif //__LIST_H__
单链表相关接口的实现List.c
#include"List.h"
void SListInit(SList* plist)
{
assert(plist);
plist->_head = NULL;
}
void SListDstory(SList* plist)
{
assert(plist);
SListNode* cur = plist->_head;
while (cur != NULL)
{
SListNode* next = cur->_next;
free(cur);
cur = next;
}
plist->_head = NULL;
}
void SListPrint(SList* plist)
{
assert(plist);
SListNode* cur = plist->_head;
while (cur != NULL)
{
printf("%d->", cur->_data);
cur = cur->_next;
}
printf("NULL");
}
SListNode* BuySListNode(SLTDataType x)
{
SListNode* pnode;
pnode = (SListNode*)malloc(sizeof(SListNode));
pnode->_data = x;
pnode->_next = NULL;
return pnode;
}
void SListPushFront(SList* plist, SLTDataType x)
{
assert(plist);
SListNode* newnode = BuySListNode(x);
newnode->_next = plist->_head;
plist->_head = newnode;
}
void SListPushBack(SList* plist, SLTDataType x)
{
assert(plist);
if (plist->_head == NULL)
{
SListNode* newnode = BuySListNode(x);
}
else
{
SListNode* tail = plist->_head;
while (tail->_next != NULL)
{
tail = tail->_next;
}
SListNode* newtail = BuySListNode(x);
tail->_next = newtail;
}
}
void SListPopFront(SList* plist)
{
assert(plist);
SListNode* next = plist->_head->_next;
free(plist->_head);
plist->_head = next;
}
void SListPopBack(SList* plist)
{
if (plist->_head->_next == NULL)
{
free(plist->_head);
plist->_head = NULL;
}
else
{
SListNode* prev = NULL;
SListNode* tail = plist->_head;
while (tail->_next != NULL)
{
prev = tail;
tail = tail->_next;
}
free(tail);
prev->_next = NULL;
}
}
SListNode* SListFind(SList* plist, SLTDataType x)
{
assert(plist);
SListNode* cur = plist->_head;
while (cur->_next != NULL)
{
if (cur->_data == x)
return cur;
else
cur = cur->_next;
}
return cur;
}
// 在pos的后面进行插入
void SListInsertAfter(SListNode* pos, SLTDataType x)
{
assert(pos);
SListNode* newnode = BuySListNode(x);
assert(newnode);
newnode->_next = pos->_next;
pos->_next = newnode;
}
// 在pos的前面进行插入
void SListEraseAfter(SListNode* pos)
{
assert(pos && pos->_next);
SListNode* next = pos->_next;
SListNode* nextnext = next->_next;
pos->_next = nextnext;
free(next);
}
void SListRemove(SList* plist, SLTDataType x)
{
assert(plist);
if (plist->_head->_next==NULL)
{
if (plist->_head->_data == x)
SListPopFront(plist);
else
printf("所删除的数不存在！\n");
}
else
{
SListNode* cur = plist->_head;
SListNode* prev = plist->_head;
while (cur->_next != NULL)
{
if (cur->_data == x)
{
prev->_next = cur->_next;
}
else
{
cur = cur->_next;
prev = prev->_next;
}
}
}
}
void Listtest1()
{
SList list;
SListInit(&list);
//SListPrint(&list);
SListPushFront(&list, 1);
SListPushFront(&list, 2);
SListPushFront(&list, 3);
SListPushFront(&list, 4);
//SListPushBack(&list, 0);
//SListPopFront(&list);
//SListPopBack(&list);
/*SListNode* pos = SListFind(&list, 3);
printf("%d\n", pos->_data);
SListInsertAfter(pos, 6);
SListEraseAfter(pos);*/
SListRemove(&list, 2);
SListPrint(&list);
SListDstory(&list);
}
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