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關(guān)于數(shù)據(jù)結(jié)構(gòu)單向鏈表的各種操作

 更新時(shí)間：2023年04月12日 10:38:40   作者：朦朧的雨夢(mèng)  
這篇文章主要介紹了關(guān)于數(shù)據(jù)結(jié)構(gòu)單向鏈表的各種操作,關(guān)于數(shù)據(jù)結(jié)構(gòu)鏈表的操作一般涉及的就是增刪改查,下面將關(guān)于無(wú)空頭鏈表展開(kāi)介紹,需要的朋友可以參考下

關(guān)于節(jié)點(diǎn)數(shù)據(jù)添加：

尾添加

最核心的是定義一個(gè)頭指針和一個(gè)尾指針（尾指針可以不定義但是會(huì)增加代碼的重復(fù)性，增加程序運(yùn)行時(shí)間）；

關(guān)于尾添加：（注意區(qū)分有節(jié)點(diǎn)和無(wú)節(jié)點(diǎn)的情況）

#include<stdio.h>
#include<stdlib.h>
#include<malloc.h>
struct Mystruct 
{
    int data;
    struct Mystruct *pnext;
 
};
void endadd(struct Mystruct **phead,struct Mystruct **pend, int adddata);
int main(void)
 
{
    
    struct Mystruct *phead = NULL;
    struct Mystruct *pend= NULL;
    endadd(&phead,&pend,4);
    ......
 
 
    return 0;
}
void endadd(struct Mystruct **phead,struct Mystruct **pend, int adddata)
 
{
  
    struct Mystruct *pt = (struct Mystruct *)malloc(sizeof(struct Mystruct));
    if(NULL == pt)
        return;
    pt->data = adddata;
    pt->pnext = NULL;
    if(NULL == *phead)
    {
       *phead = pt;
 
    }
    else
 
    {
        (*pend)->pnext = pt;
    }
    *pend= pt;
}

頭添加

關(guān)于代碼思路與尾添加基本一致，注意區(qū)分節(jié)點(diǎn)的鏈接：

#include<stdio.h>
#include<stdlib.h>
#include<malloc.h>
struct Mystruct 
{
    int data;
    struct Mystruct *pnext;
 
};
void head_add(struct Mystruct **phead,struct Mystruct **pend, int adddata);
int main(void)
 
{
    
    struct Mystruct *phead = NULL;
    struct Mystruct *pend= NULL;
    head_add(&phead,&pend,4);
    ......
 
 
    return 0;
}
void head_add(struct Mystruct **phead,struct Mystruct **pend, int adddata)
 
{
    
    struct Mystruct *pt = (struct Mystruct *)malloc(sizeof(struct Mystruct));
    if(NULL == pt)
        return;
    pt->data = adddata;
    pt->pnext = NULL;
    if(NULL == *phead)
    {
       *pend = pt;
 
    }
    else
 
    {
        pt->pnext = (*phead);
    }
    *phead= pt;
}

一次性添加n個(gè)x數(shù)據(jù)節(jié)點(diǎn)：

利用循壞，直接調(diào)用頭添加或者尾添加：

#include<stdio.h>
#include<stdlib.h>
#include<malloc.h>
struct Mystruct 
{
    int data;
    struct Mystruct *pnext;
 
};
void circulate_add(struct Mystruct **phead,struct Mystruct **pend, int adddata);
int main(void)
 
{
    
    struct Mystruct *phead = NULL;
    struct Mystruct *pend= NULL;
    circulate_add(&phead,&pend,4,5);
    ......
 
 
    return 0;
}
void circulate_add(struct Mystruct **phead,struct Mystruct **pend, int count, int adddata);
 
{
    for(int i = 0;i<count;i++)
    {
        endadd(phead, pend, adddata);
       
    }
 
 
 
}

關(guān)于查找：

根據(jù)指定數(shù)據(jù)：

核心就是通過(guò)頭指針一個(gè)一個(gè)往下走找到指定節(jié)點(diǎn)的數(shù)據(jù)與所找數(shù)據(jù)是否匹配，最重要的是要使用中間變量記錄頭指針，否則就無(wú)法找到頭指針了（因?yàn)槭菃雾?xiàng)鏈表）：

#include<stdio.h>
#include<stdlib.h>
#include<malloc.h>
struct Mystruct 
{
    int data;
    struct Mystruct *pnext;
 
};
void data_find(struct Mystruct *phead, int designated_data);
int main(void)
 
{
    
    struct Mystruct *phead = NULL;
    struct Mystruct *pend= NULL;
    middle_data_find(phead,4);
    ......
 
 
    return 0;
}
void data_find(struct Mystruct* phead, int designated_data)
{
    if (NULL == phead)
        return;
    struct Mystruct* ptemp = phead;
    while (ptemp != NULL)
    {
        if (ptemp->data == designated_data)
        {
            printf("找到了");
            break;
 
        }
        ptemp = ptemp->pnext;
    }
    return;
 
}

根據(jù)下標(biāo)查找：

思路基本不變；區(qū)別傳入指定下標(biāo)；內(nèi)部定義一個(gè)計(jì)數(shù)器，當(dāng)下標(biāo)和計(jì)數(shù)器數(shù)值相等；表示鏈表存在這個(gè)節(jié)點(diǎn)；可以選擇傳出或者提醒；大家思考一下，動(dòng)手實(shí)踐一下。

#include<stdio.h>
#include<stdlib.h>
#include<malloc.h>
struct Mystruct 
{
    int data;
    struct Mystruct *pnext;
 
};
struct Mystruct *index_find(struct Mystruct *phead, int index);
int main(void)
 
{
    
    struct Mystruct *phead = NULL;
    struct Mystruct *pend= NULL;
    middle_data_find(phead,4);
    ......
 
 
    return 0;
}
struct Mystruct* index_find(struct Mystruct* phead, int index)
 
{
    if (NULL == phead||index<0)
        return NULL;
 
    struct Mystruct* ptemp = phead;
    int i = 0;
    for (i = 0; i < index; i++)
    {
        ptemp = ptemp->pnext;
    }
    return ptemp;
 
}

刪除頭節(jié)點(diǎn)：

#include<stdio.h>
#include<stdlib.h>
#include<malloc.h>
struct Mystruct 
{
    int data;
    struct Mystruct *pnext;
 
};
void deleat_head(struct Mystruct **phead,struct Mystruct **pend);
int main(void)
 
{
    
    struct Mystruct *phead = NULL;
    struct Mystruct *pend= NULL;
    deleat_head(&phead)
    ......
 
 
    return 0;
}
void deleat_head(struct Mystruct** phead, struct Mystruct** pend)
{
    if (NULL == *phead)
        return;
    struct Mystruct* pt = *phead;
    if ((*phead)->pnext == NULL)
    {
        free(pt);
        *phead = NULL;
        *pend = NULL;
    }
    else
    {
        *phead = (*phead)->pnext;
        free(pt);
    }
 
 
 
 
}
void deleat_end(struct My

刪除尾節(jié)點(diǎn)：

#include<stdio.h>
#include<stdlib.h>
#include<malloc.h>
struct Mystruct 
{
    int data;
    struct Mystruct *pnext;
 
};
void deleat_end(struct Mystruct**phead,struct Mystruct**pend);
int main(void)
 
{
    
    struct Mystruct *phead = NULL;
    struct Mystruct *pend= NULL;
    deleat_head(&phead)
    ......
 
 
    return 0;
}
void deleat_end(struct Mystruct** phead, struct Mystruct** pend)
{
    if (NULL == *phead)
        return;
    struct Mystruct* pt = *phead;
    if (pt->pnext == NULL)
    {
        free(pt);
        *phead = NULL;
        *pend = NULL;
    }
    else
    {
        while (pt->pnext != (*pend))
        {
            if (pt->pnext == (*pend))
            {
                free(*pend);
                *pend = pt;
                pt->pnext = NULL;
                pt = pt->pnext;
            }
           
 
        }
 
    }
    
  
 
 
}

刪除中間節(jié)點(diǎn)：

這里思路改變一下：根據(jù)數(shù)據(jù)或者下標(biāo)找到前一個(gè)節(jié)點(diǎn)，改變前一個(gè)節(jié)點(diǎn)的pnext指針的指向，直接指向下一個(gè)節(jié)點(diǎn)，也就是這個(gè)節(jié)點(diǎn)的pnext；簡(jiǎn)單示范一下刪除中間指定數(shù)據(jù)：

#include<stdio.h>
#include<stdlib.h>
#include<malloc.h>
struct Mystruct 
{
    int data;
    struct Mystruct *pnext;
 
};
void deleat_middlledata(struct Mystruct**phead,struct Mystruct**pend,int deleatdata);
int main(void)
 
{
    
    struct Mystruct *phead = NULL;
    struct Mystruct *pend= NULL;
    deleat_head(&phead)
    ......
 
 
    return 0;
}
void deleat_middlledata(struct Mystruct**phead,struct Mystruct**pend,int deleatdata)
{
    if (NULL == *phead)
        return;
    struct Mystruct* pt = *phead;
    if (pt->pnext == NULL)
    {
        free(pt);
        *phead = NULL;
        *pend = NULL;
    }
}

刪除全部節(jié)點(diǎn)：

#include<stdio.h>
#include<stdlib.h>
#include<malloc.h>
struct Mystruct 
{
    int data;
    struct Mystruct *pnext;
 
};
void deleat_all(struct Mystruct** phead, struct Mystruct** pend)
int main(void)
 
{
    
    struct Mystruct *phead = NULL;
    struct Mystruct *pend= NULL;
    deleat_all(&phead,&pend)
    ......
 
 
    return 0;
}
void deleat_all(struct Mystruct** phead, struct Mystruct** pend)
{
 
 
    while (*phead!= NULL)
    {
        struct Mystruct* pt = *phead;
        *phead = (*phead)->pnext;
        free(pt);
 
 
    }
    *phead = NULL;
    *pend = NULL;
 
 
 
}

到此這篇關(guān)于關(guān)于數(shù)據(jù)結(jié)構(gòu)單向鏈表的各種操作的文章就介紹到這了,更多相關(guān)數(shù)據(jù)結(jié)構(gòu)單向鏈表操作內(nèi)容請(qǐng)搜索腳本之家以前的文章或繼續(xù)瀏覽下面的相關(guān)文章希望大家以后多多支持腳本之家！

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