数据结构（一）：顺序表与链表

顺序表是在计算机内存中以数组的形式保存的线性表，是指用一组地址连续的存储单元依次存储数据元素的线性结构。

#include "Linear_List.h"

void Linear_List::ListInit(MyList L)
{
    L.length = 0;
}

int Linear_List::ListLength(MyList L)
{
    return L.length;
}

ElemType Linear_List::ListGet(MyList L, int i)
{
    if ((i > 1)&&(i < L.length))
    {
        return L.data[i - 1];
    }
    else
    {
        printf("溢出错误");
        return -1;
    }
}

int Linear_List::ListLocate(MyList L, ElemType i)
{
    int j = 1;
    while (j <= L.length)
    {
        if (i != L.data[j - 1])
        {
            j++;
        }
        else
        {
            break;
        }
    }
    return j;
}

ElemType Linear_List::ListPrior(MyList L, ElemType i)
{
    int j = ListLocate(L, i);
    if (j == 1)
    {
        printf("无前驱");
        exit(0);
    }
    else
    {
        return L.data[j - 2];
    }
}

ElemType Linear_List::ListNext(MyList L, ElemType i)
{
    int j = ListLocate(L, i);
    if (j == L.length)
    {
        printf("无后驱");
        exit(0);
    }
    else
    {
        return L.data[j];
    }
}

void Linear_List::ListInsert(MyList L, int j, ElemType i)
{
    if (L.length == MAXSIZE)
    {
        printf("表满");
        exit(0);
    }
    if ((j < 0) || (j > L.length))
    {
        printf("j错误");
        exit(0);
    }
    for (int n = L.length - 1; n >= j - 1; n--)
        L.data[n + 1] = L.data[n];
    L.data[j - 1] = i;
    L.length++;
}

void Linear_List::ListDel(MyList L, int i)
{
    if ((i < 0) || (i > L.length))
    {
        printf("i错误");
        exit(0);
    }
    for (int n = L.length - 1; n > i - 1; n--)
        L.data[n - 1] = L.data[n];
    L.length--;
}

bool Linear_List::ListEmpty(MyList L)
{
    return !L.length;
}

void Linear_List::ListTraverse(MyList L)
{
    if (L.length == 0)
        printf("表空");
    else
        for (int i = 1; i < L.length; i++)
            printf("%d", L.data[i]);
}

#pragma once
#ifndef _LINEAR_LIST_
#define _LINEAR_LIST_

#define MAXSIZE        1024

#include <stdio.h>
#include <stdlib.h>
typedef int ElemType;

struct node
{
    int data[MAXSIZE];        //存放线性表数组
    int length;                //线性表长度
};

typedef struct node MyList;

struct Linear_List
{
    void ListInit(MyList L);
    int ListLength(MyList L);
    ElemType ListGet(MyList L, int i);
    int ListLocate(MyList L, ElemType i);        //定位函数,i是数据
    ElemType ListPrior(MyList L, ElemType i);    //求前驱
    ElemType ListNext(MyList L, ElemType i);    //求后继
    void ListInsert(MyList L, int j, ElemType i);            //前插
    void ListDel(MyList L, int i);                //删除
    bool ListEmpty(MyList L);                    //判空
    void ListTraverse(MyList L);                //遍历

};

#endif

 以上是顺序表

 

链表

#include "MyLinkedList.h"

void LinkedListInit1(LinkedList L)
{
    L = NULL;
}

void LinkedListInit2(LinkedList L)
{
    L = (LNode *)malloc(sizeof(LNode));
    if (L == NULL)
    {
        printf("error");
        exit(0);
    }
    L->next = NULL;
}

int LinkedListLength(LinkedList L)
{
    LNode *p;
    p = L->next;
    int j = 0;
    while (p != NULL)
    {
        j++;
        p = p->next;
    }
    return j;
}

LinkedList LinkedListGet(LinkedList L, int i)
{
    LNode *p;
    p = L->next;
    int j = 1;
    while ((p != NULL)&&(j < i))
    {
        p = p->next;
        j++;
    }
    return p;
}

// LNode LinkedListLocate(LinkedList L, ElemType e)
// {
//     LNode *p;
//     p = L->next;
//     j = 1;
//     while ((p)
//     {
//     }
// }

#ifndef _MYLINKEDLIST_
#define _MYLINKEDLIST_

#include <stdio.h>
#include <stdlib.h>

typedef int ElemType;

struct Node
{
    ElemType data;
    struct Node *next;
};

typedef struct Node LNode;
typedef struct Node *LinkedList;

void LinkedListInit1(LinkedList L);