線性表(動態(tài)數(shù)組)

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

#define TRUE 1
#define FALSE 0
#define OK 1
#define ERROR 0
#define INFEASIBLE -1
#define OVERFLOW -2

typedef int Status;
typedef int ElemType;

#define LIST_INIT_SIZE 100
#define LISTINCREMENT 10

typedef struct
{
    ElemType *elem;
    int length;
    int listsize;
} SqList;

Status InitList(SqList *L)
{
    L->elem=(ElemType *)malloc(sizeof(ElemType)*LIST_INIT_SIZE);
    if(!L->elem) exit(OVERFLOW);
    L->length=0;
    L->listsize=LIST_INIT_SIZE;
    return OK;
}

Status DestroyList(SqList *L)
{
    if(!L->elem) return ERROR;
    L->elem=NULL;
    return OK;
}

Status ListEmpty(SqList L)
{
    if(!L.length) return TRUE;
    else return FALSE;
}

Status ListLength(SqList L)
{
    return L.length;
}

Status ClearList(SqList *L)
{
    if(!ListEmpty(*L))
        L->length=0;
    return OK;
}

Status GetElem(SqList L, int i, ElemType *e)
{
    if(i<1 || i>L.length) return ERROR;
    *e=L.elem[i-1];
    return OK;
}

Status equal(ElemType a, ElemType b)
{
    if(a==b) return TRUE;
    else return FALSE;
}

Status LocateElem(SqList L, ElemType e, Status (*compare)(ElemType, ElemType))
{
    int i=1;
    while(i<=L.length && !compare(L.elem[i-1], e)) i++;
    if(i<=L.length) return i;
    else return ERROR;
}

Status PriorElem(SqList L, ElemType cur_e, ElemType *pre_e)
{
    int i=LocateElem(L, cur_e, equal);
    if(i>1)
    {
        GetElem(L, i-1, pre_e);
        return OK;
    }
    return ERROR;
}

Status NextElem(SqList L, ElemType cur_e, ElemType *next_e)
{
    int i=LocateElem(L, cur_e, equal);
    if(i && i<L.length)
    {
        GetElem(L, i+1, next_e);
        return OK;
    }
    return ERROR;
}

Status ListInsert(SqList *L, int i, ElemType e)
{
    if(i<1 || i>(L->length+1)) return ERROR;
    if(L->length==L->listsize)
    {
        ElemType *newbase;
        newbase=(ElemType *)realloc(L->elem, (L->listsize+LISTINCREMENT)*sizeof(ElemType));
        if(!newbase) exit(OVERFLOW);
        L->elem=newbase;
        L->listsize+=LISTINCREMENT;
    }
    ElemType *p, *q;
    q=&L->elem[i-1];
    for(p=&L->elem[L->length-1]; p>=q; p--) *(p+1)=*p;
    *q=e;
    (L->length)++;
    return OK;
}

Status ListDelete(SqList *L, int i, ElemType *e)
{
    if(i<1 || i>(L->length+1)) return ERROR;
    ElemType *p, *q;
    p=&L->elem[i-1];
    *e=*p;
    q=&L->elem[L->length-1];
    for(++p; p<=q;  p++) *(p-1)=*p;
    (L->length)--;
    return OK;
}

void Union(SqList *La, SqList Lb)
{
    ElemType e;
    int i;
    int La_len=ListLength(*La);
    int Lb_len=ListLength(Lb);
    for(i=1; i<=Lb_len; i++)
    {
        GetElem(Lb, i, &e);
        if(!LocateElem(*La, e, equal))
            ListInsert(La, ++La_len, e);
    }
}

void MergeList(SqList La, SqList Lb, SqList *Lc)
{
    InitList(Lc);
    int i=1, j=1;
    int k=0;
    ElemType ai, bj;
    int La_len=ListLength(La);
    int Lb_len=ListLength(Lb);
    while((i<=La_len)&&(j<=Lb_len))
    {
        GetElem(La, i, &ai);
        GetElem(Lb, j, &bj);
        if(ai<=bj)
        {
            ListInsert(Lc, ++k, ai);
            i++;
        }
        else
        {
            ListInsert(Lc, ++k, bj);
            j++;
        }
    }
    while(i<=La_len)
    {
        GetElem(La, i++, &ai);
        ListInsert(Lc, ++k, ai);
    }
    while(j<=Lb_len)
    {
        GetElem(Lb, j++, &bj);
        ListInsert(Lc, ++k, bj);
    }
}
/**********O(La.length+Lb.length)**********/
void MergeList_Sq(SqList La, SqList Lb, SqList *Lc)
{
    ElemType *pa=La.elem;
    ElemType *pb=Lb.elem;
    Lc->listsize=Lc->length=La.length+Lb.length;
    ElemType *pc=Lc->elem=(ElemType *)malloc(sizeof(ElemType)*Lc->listsize);
    if(!Lc->elem) exit(OVERFLOW);
    int *pa_last=La.elem+La.length-1;
    int *pb_last=Lb.elem+Lb.length-1;
    while(pa<=pa_last && pb<=pb_last)
        if(*pa<=*pb) *pc++=*pa++;
        else *pc++=*pb++;
    while(pa<=pa_last) *pc++=*pa++;
    while(pb<=pb_last) *pc++=*pb++;
}

void PrintList(SqList L)
{
    int i;
    for(i=1; i<=L.length; i++)
        printf("%d ", L.elem[i-1]);
    printf("\n");
}

void CreateList(SqList *L)
{
    InitList(L);
    int Num, i;
    ElemType e;
    scanf("%d", &Num);
    for(i=1; i<=Num; i++)
    {
        scanf("%d", &e);
        ListInsert(L, i, e);
    }
}

int main()
{
    SqList La, Lb, Lc;

    CreateList(&La);
    CreateList(&Lb);
    MergeList_Sq(La, Lb, &Lc);
    PrintList(Lc);
    return 0;
}
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