數據結構-線性表

一、線性表的順序實現

#include <iostream>
#include <cstdlib>

#define   OK      1
#define   ERROR   0

#define   LIST_INIT_SIZE  100
#define   LISTINCREMENT   10

typedef int Elemtype;
typedef int Status;

using namespace std;

struct SqList{
    Elemtype *elem;
    int length;
    int LIST_SIZE;
};

Status InitList(SqList &L);   //初始化線性表
Status InsertList(SqList &L, Elemtype e);  //線性表的插入操作
Status ChectList(SqList &L, Elemtype e);   //線性表的查找操作
Status DeleteList(SqList &L, Elemtype e);  //線性表的刪除操作
int Getlength(const SqList &L);            //獲取線性表的內容長度
void TraverseList(const SqList &L);        //便利線性表

int main()
{
    SqList L;
    InitList(L);
    for(int i = 0; i < 10; ++i)
        InsertList(L,i+1);
    cout << "當前表長"<< Getlength(L)<< endl;
    TraverseList(L);
    cout << "請輸入要刪除的數據:";
    Elemtype e;
    cin >> e;
    DeleteList(L,e);
    cout << "當前表長"<< Getlength(L)<< endl;
    TraverseList(L);

    return 0;
}

Status InitList(SqList &L){
    L.elem = (Elemtype *)malloc(LIST_INIT_SIZE * sizeof(Elemtype));
    if(!L.elem)
        return ERROR;
    for(int i = 0; i < LIST_INIT_SIZE; ++i)
        L.elem[i] = 0;
    L.length = 0;
    L.LIST_SIZE = LIST_INIT_SIZE;

    return OK;
}

Status InsertList(SqList &L, Elemtype e){
    if(L.length >=  LIST_INIT_SIZE){
        L.elem = (Elemtype *)realloc(L.elem,(LISTINCREMENT+L.LIST_SIZE)*sizeof(Elemtype));
        L.elem = L.elem + LISTINCREMENT;
        L.LIST_SIZE = LIST_INIT_SIZE + LISTINCREMENT;
    }

    L.elem[L.length] = e;
    L.length++;

    return OK;
}
Status ChectList(SqList &L, Elemtype e){
    for(int i = 0; i < L.length; ++i){
        if(L.elem[i] == e)
            return OK;
    }

    return ERROR;
}
Status DeleteList(SqList &L, Elemtype e){
    int i;
    for(i = 0; i < L.length; ++i){
        if(L.elem[i] == e)
            break;
    }

    if(i == L.length)
        return ERROR;

    for(i; i < L.length; ++i){
        L.elem[i] = L.elem[i+1];
    }

    L.length--;
    return OK;
}
int Getlength(const SqList &L){
    return L.length;
}
void TraverseList(const SqList &L){
    for(int i = 0; i < L.length; ++i){
        cout << L.elem[i]<< " ";
    }
    cout << endl;
}

二、線性表的鏈式實現

指針動態申請空間時類型必須相互匹配

#include <iostream>
#include <cstdlib>

#define   OK      1
#define   ERROR   0

typedef int Elemtype;
typedef int Status;

using namespace std;

typedef struct LinkNode{
    Elemtype data;
    struct LinkNode *next;
}*LNode,LinkNode;

typedef struct {
    LinkNode *head, *tail;
    int length;
}LinkList;

Status InitList(LinkList &L);   //初始化線性表
Status InsertList(LinkList &L, Elemtype e);  //線性表的插入操作
Status ChectList(LinkList &L, Elemtype e);   //線性表的查找操作
Status DeleteList(LinkList &L, Elemtype e);  //線性表的刪除操作
int Getlength(const LinkList &L);            //獲取線性表的內容長度
void TraverseList(const LinkList &L);        //遍歷線性表
Status DestroyList(LinkList &L);             //銷燬線性表

int main()
{
    LinkList L;
    InitList(L);
    for(int i = 0; i < 10; ++i){
        InsertList(L,i+1);
    }
    cout << "當前表長："<< Getlength(L)<< endl;
    TraverseList(L);
    cout << "請輸入要刪除的數據:";
    Elemtype e;
    cin >> e;
    DeleteList(L,e);
    cout << "當前表長"<< Getlength(L)<< endl;
    TraverseList(L);
    DestroyList(L);
    return 0;
}

Status InitList(LinkList &L){
    L.head = new LinkNode;
    L.tail = L.head;
    L.head->next = NULL;
    L.length = 0;

    return OK;
}
Status InsertList(LinkList &L, Elemtype e){
    LNode s = new LinkNode;
    s->data = e;
    s->next = L.tail->next;
    L.tail->next = s;
    L.tail = s;
    L.length++;

    return OK;
}
Status ChectList(LinkList &L, Elemtype e){
    LNode p;
    p = L.head->next;
    while(p){
        if(p->data == e)
            return OK;
        p = p->next;
    }
    return ERROR;
}
Status DeleteList(LinkList &L, Elemtype e){
    LNode p;
    p = L.head;
    while(p){
        if(p->next->data == e){
            p->next = p->next->next;
            free(p->next);
            L.length--;
            return OK;
        }
        p = p->next;
    }
    return ERROR;
}
int Getlength(const LinkList &L){
    return L.length;
}
void TraverseList(const LinkList &L){
    LNode p;
    p = L.head->next;
    while(p){
        cout << p->data<< " ";
        p = p->next;
    }
    cout << endl;
}
Status DestroyList(LinkList &L){
    LNode p;
    p = L.head->next;
    while(p){
        L.head->next = p->next;
        free(p);
        p = L.head->next;
    }
    L.head->next = NULL;
    L.length = 0;

    return OK;
}