数据结构线性表建立单链表（头插法）

拼搏现实的明天。 2022-09-18 14:51 174阅读 0赞

#include <stdio.h>
    #include <stdlib.h>
    
    #define LIST_INIT_SIZE    100
    #define LISTLNCREMENT     10
    #define OK                1
    #define ERROR             0
    #define OVERFLOW          -2
    
    typedef int ElemType;
    
    typedef struct
    {
    	ElemType *elem;
    	int length;
    	int listsize;
    }SqList;
    
    
    int InitList_Sq(SqList &L)
    {
    	L.elem = (ElemType *) malloc(LIST_INIT_SIZE * sizeof(ElemType));
    	if (!L.elem)
    	{
    		exit(OVERFLOW);
    	}
    	L.length = 0;
    	L.listsize = LIST_INIT_SIZE;
    	return OK;
    }
    
    void Create_Sq(SqList &L, int n)
    {
    	int i;
    	for (i=0; i<n; i++)
    	{
    		scanf("%d",&L.elem[i]);
    	}
    	L.length = n;
    }
    
    void Display_Sq(SqList L)
    {
    	int i;
    	for (i=0; i<L.length ; i++)
    	{
    		printf("%d ",L.elem[i]);
    	}
    	printf("\n");
    }
    
    int ListInsert_Sq(SqList &L, int i, ElemType e)
    {
    	ElemType *newbase,*p,*q;
    	if (i<1 || i>L.length+1)
    	{
    		return ERROR;
    	}
    	if (L.length >= L.listsize)
    	{
    		newbase = (ElemType *)realloc(L.elem ,(L.listsize + LISTLNCREMENT) * sizeof(LISTLNCREMENT));
    		if (!newbase)
    		{
    			exit(OVERFLOW);
    		}
    		L.elem = newbase;
    		L.listsize += LISTLNCREMENT;
    	}
    	q = &(L.elem [i-1]);
    	for (p=&(L.elem[L.length-1]);p>=q;--p)
    	{
    		*(p+1) = *p;
    	}
    	*q = e;
    	++L.length ;
    	return OK;
    }
    
    
    
    int equal(ElemType i, ElemType j)
    {
    	return (i==j);
    }
    
    
    int LocateElem_Sq(SqList L, ElemType e, int (*compare)(ElemType, ElemType))
    {
    	ElemType *p;
    	int i = 1;
    	p = L.elem; 
    	while (i <= L.length  && !(*compare)(*p++,e))
    	{
    		++i;
    	}
    	if (i<=L.length)
    	{
    		return i;
    	}
    	else
    	{
    		return 0;
    	}
    }
    
    
    
    void GetElem(SqList L,int i, ElemType &e)
    {
    	e = L.elem[i-1];
    }
    
    void Listunion(SqList &La, SqList Lb)
    {
    	int i,e;
    	int la_len = La.length ;
    	int lb_len = Lb.length ;
    	for (i=1; i<=lb_len; i++)
    	{
    		GetElem(Lb,i,e);
    		if (!LocateElem_Sq(La,e,equal))
    		{
    			ListInsert_Sq(La,++la_len, e);
    		}
    	}
    }
    
    
    
    
    
    		
    int main()
    {
    	int n;
    	SqList La,Lb;
    	InitList_Sq(La);
    	InitList_Sq(Lb);
    	printf("请输入链表La的长度: ");
    	scanf("%d",&n);
    	printf("请输入 %d 个数据: ",n);
    	Create_Sq(La,n);
    	printf("请输入链表Lb的长度: ");
    	scanf("%d",&n);
    	printf("请输入 %d 个数据: ",n);
    	Create_Sq(Lb,n);
    	printf("合并后的两个链表是:");
    	Listunion(La,Lb);
    	Display_Sq(La);
    
    
    	return 0;
    }