【C语言】简单链表操作

╰半夏微凉° 2024-03-16 07:30 103阅读 0赞

#include <stdio.h>
    #include <stdbool.h>
    #include <stdlib.h>
    #include <time.h>
    
    #define GlobalDebugFlag 1
    
    #define DEBUG_PRINT_WITH_TIME(fmt, args...) { \
                        do \
                        { \
                            if (GlobalDebugFlag == 1 ) \
                            { \
                                time_t timep = {0}; \
                                struct tm *p = NULL; \
                                time(&timep); \
                                p=localtime(&timep); \
                                fprintf(stdout, "[%4d-%02d-%02d %02d:%02d:%02d %s %s %d] ", \
                                (1900+p->tm_year), \
                                (1+p->tm_mon), \
                                p->tm_mday,  \
                                p->tm_hour, \
                                p->tm_min,  \
                                p->tm_sec, \
                                __FILE__, \
                                __FUNCTION__, \
                                __LINE__); \
                               fprintf(stdout, fmt "\n", ##args); \
                            } \
                        } \
                        while(0); \
    					}
    
    
    //定义节点
    struct _Node;
    typedef struct _Node Node;
    
    struct _Node
    {
        int data;
        Node *next;
    };
    
    //定义列表
    typedef struct _List 
    {
        Node *head;  //记录头地址
        int count;
    } List;
    
    // 创建链表
    List *ListCreate()
    {
        List *list;
        list = (List *)malloc( sizeof(List) );
        list->count = 0;
        list->head = 0;
        
        return list;
    }
    // 删除链表
    void ListDestroy(List *list)
    {
        Node *current;
        Node *next;
        current = list->head;
        while (current->next != NULL)
    	{
            next = current->next;
            free(current);
            current = next;
        }
    	list->head = NULL;
        free(list);
        list = NULL;
    }
    
    // 查找元素
    // situ=true时, 返回当前位置, false, 则返回上一个位置
    Node *ListSearch(List *list, int data)
    {
        Node *node;
        node = list->head;
        while ( node->next != NULL )
    	{
            if ( node->data == data)
                return node;
            node = node->next;
        }
        return NULL;
    }
    
    // 查找元素
    // situ=true时, 返回当前位置, false, 则返回上一个位置
    Node *ListSearchBefore(List *list, int data)
    {
        Node *node;
        node = list->head;
        while ( node->next != NULL )
    	{
            if ( node->next->data == data)
                return node;
            node = node->next;
        }
        return NULL;
    }
    
    //删除节点
    bool ListDelete( List* list, int data)
    {
        Node *node;
        Node *tmp;
        node = list->head;
        
        // 判断这个节点是否是首节点
        if ( node->data == data )
    	{
            free(list->head);
            list->head = NULL;
            list->count = 0;
            return true;
        }
        
        // 查找给定节点的前一个节点
        node = ListSearchBefore(list, data);
        
        // 找不到节点
        if (  node  == NULL){
            return false;
        }
        //删除
        tmp = node->next->next;
        free(node->next);
        node->next = tmp;
        return true;
    }
    
    //在给定元素前加节点
    bool ListInsertBefore( List* list, int query, int data)
    {
        Node *node;
        Node *new_node;
    
        // 为新节点分配内存
        new_node = (Node *)malloc( sizeof(Node) );
        if ( new_node == NULL) return false;
        new_node->data = data;
    
        node = list->head;
        // 判断这个节点是否是首节点
        if ( node->data == query )
    	{
            new_node->next = node->next ;
            node->next = new_node;
            return true;
        }
    
        // 查找给定节点的前一个节点
        node = ListSearchBefore(list, query);
        if (  node  == NULL)// 找不到节点
    	{
            return false;
        }
        new_node->next = node->next ;
        node->next = new_node;
    
        return true;
    }
    
    // 加入元素到末尾
    bool ListAdd(List *list, int data)
    {
        Node *node;
        Node *new_node;
    
        new_node = (Node *)malloc( sizeof(Node) );    
        if ( new_node == NULL) return false;
        
        new_node->data = data;
        new_node->next = NULL;
    
        //获取链表head
        node = list->head ;
        
        if (node == NULL)
        {
    		list->head = new_node;
    		return true;
    	}
        
        while(node->next != NULL)
        {
    		node = node->next;
    	}
        	    
        node->next = new_node;
        list->count+=1;
    
        return true;
    }
    
    //打印整个链表
    void ListPrint(List *list)
    {
        Node *node;
        node = list->head;
        DEBUG_PRINT_WITH_TIME("Linked List:");
        int i = 1;
        while (node != NULL)
    	{
            DEBUG_PRINT_WITH_TIME("%d: %d", i++, node->data);
            node = node->next;
        }
    	DEBUG_PRINT_WITH_TIME("");
    }
    
    int main()
    {    
    	int data, data2;
    	bool ret = 0;
        List *list;
        list = ListCreate();
        
    	DEBUG_PRINT_WITH_TIME("Please input data(end with 0):");
        scanf("%d", &data);
        
        //读取数据
        while (data != 0)
    	{
    		ret = ListAdd(list, data);
            if (ret == false)
            {
    			return 0;
    		}
            scanf("%d", &data);
        }
        DEBUG_PRINT_WITH_TIME("current data ");
        ListPrint(list);
        	
    	DEBUG_PRINT_WITH_TIME("Please input search data:");
    	scanf("%d", &data);
        Node *node = ListSearch(list, data);
        if(node != NULL)
    	{
    		DEBUG_PRINT_WITH_TIME("ListSearch result successfully: %d", node->data);
    	}
    	else
    	{
    		DEBUG_PRINT_WITH_TIME("Can not found in List: %d", data);
    	}
        
    	DEBUG_PRINT_WITH_TIME("\nPlease input delete data:");
    	scanf("%d", &data);
        ListDelete(list, data);
        ListPrint(list);
        
    	DEBUG_PRINT_WITH_TIME("\nPlease input two data(Before data1 insert data2):");
    	scanf("%d %d", &data, &data2);
        DEBUG_PRINT_WITH_TIME("insert %d before %d ", data, data2);
        ListInsertBefore(list, data, data2);
        ListPrint(list);
        
        ListDestroy(list);
    
        return 0;
    }

运行效果：

[2023-05-31 21:18:28 F:\projects\c\llvmorg-16.0.3\clang\link2.c main 224] Please input data(end with 0):
    1
    2
    3
    4
    5
    0
    [2023-05-31 21:18:34 F:\projects\c\llvmorg-16.0.3\clang\link2.c main 237] current data
    [2023-05-31 21:18:34 F:\projects\c\llvmorg-16.0.3\clang\link2.c ListPrint 207] Linked List:
    [2023-05-31 21:18:34 F:\projects\c\llvmorg-16.0.3\clang\link2.c ListPrint 211] 1: 1
    [2023-05-31 21:18:34 F:\projects\c\llvmorg-16.0.3\clang\link2.c ListPrint 211] 2: 2
    [2023-05-31 21:18:34 F:\projects\c\llvmorg-16.0.3\clang\link2.c ListPrint 211] 3: 3
    [2023-05-31 21:18:34 F:\projects\c\llvmorg-16.0.3\clang\link2.c ListPrint 211] 4: 4
    [2023-05-31 21:18:34 F:\projects\c\llvmorg-16.0.3\clang\link2.c ListPrint 211] 5: 5
    [2023-05-31 21:18:34 F:\projects\c\llvmorg-16.0.3\clang\link2.c ListPrint 214]
    [2023-05-31 21:18:34 F:\projects\c\llvmorg-16.0.3\clang\link2.c main 240] Please input search data:
    3
    [2023-05-31 21:18:39 F:\projects\c\llvmorg-16.0.3\clang\link2.c main 245] ListSearch result successfully: 3
    [2023-05-31 21:18:39 F:\projects\c\llvmorg-16.0.3\clang\link2.c main 252]
    Please input delete data:
    2
    [2023-05-31 21:18:43 F:\projects\c\llvmorg-16.0.3\clang\link2.c ListPrint 207] Linked List:
    [2023-05-31 21:18:43 F:\projects\c\llvmorg-16.0.3\clang\link2.c ListPrint 211] 1: 1
    [2023-05-31 21:18:43 F:\projects\c\llvmorg-16.0.3\clang\link2.c ListPrint 211] 2: 3
    [2023-05-31 21:18:43 F:\projects\c\llvmorg-16.0.3\clang\link2.c ListPrint 211] 3: 4
    [2023-05-31 21:18:43 F:\projects\c\llvmorg-16.0.3\clang\link2.c ListPrint 211] 4: 5
    [2023-05-31 21:18:43 F:\projects\c\llvmorg-16.0.3\clang\link2.c ListPrint 214]
    [2023-05-31 21:18:43 F:\projects\c\llvmorg-16.0.3\clang\link2.c main 257]
    Please input two data(Before data1 insert data2):
    4 2
    [2023-05-31 21:19:02 F:\projects\c\llvmorg-16.0.3\clang\link2.c main 259] insert 4 before 2
    [2023-05-31 21:19:02 F:\projects\c\llvmorg-16.0.3\clang\link2.c ListPrint 207] Linked List:
    [2023-05-31 21:19:02 F:\projects\c\llvmorg-16.0.3\clang\link2.c ListPrint 211] 1: 1
    [2023-05-31 21:19:02 F:\projects\c\llvmorg-16.0.3\clang\link2.c ListPrint 211] 2: 3
    [2023-05-31 21:19:02 F:\projects\c\llvmorg-16.0.3\clang\link2.c ListPrint 211] 3: 2
    [2023-05-31 21:19:02 F:\projects\c\llvmorg-16.0.3\clang\link2.c ListPrint 211] 4: 4
    [2023-05-31 21:19:02 F:\projects\c\llvmorg-16.0.3\clang\link2.c ListPrint 211] 5: 5
    [2023-05-31 21:19:02 F:\projects\c\llvmorg-16.0.3\clang\link2.c ListPrint 214]
    
    --------------------------------
    Process exited after 34.26 seconds with return value 0
    请按任意键继续. . .