求集合并集
<span style="color:#ff0000;"><strong>main.cpp:
</strong>
</span>#include"list.h"
//用main写测试代码
#include <stdio.h>
void unionList(SqList *LA, SqList *LB, SqList *&LC)
{
int lena,i;
ElemType e;
InitList(LC);
for (i=1; i<=ListLength(LA); i++) //将LA的所有元素插入到Lc中
{
GetElem(LA,i,e);
ListInsert(LC,i,e);
}
lena=ListLength(LA); //求线性表LA的长度
for (i=1; i<=ListLength(LB); i++)
{
GetElem(LB,i,e); //取LB中第i个数据元素赋给e
if (!LocateElem(LA,e)) //LA中不存在和e相同者,插入到LC中
ListInsert(LC,++lena,e);
}
}
int main()
{
SqList *sq_a, *sq_b, *sq_c;
ElemType a[6]= {5,8,7,2,4,9};
CreateList(sq_a, a, 6);
printf("LA: ");
DispList(sq_a);
ElemType b[6]= {2,3,8,6,0};
CreateList(sq_b, b, 5);
printf("LB: ");
DispList(sq_b);
unionList(sq_a, sq_b, sq_c);
printf("LC: ");
DispList(sq_c);
return 0;
}
<span style="color:#ff0000;"><strong>list.h:
</strong></span>typedef int ElemType;
#define MaxSize 50
typedef struct
{
ElemType data[MaxSize];
int length;
} SqList;
void InitList(SqList *&L);//初始化线性表InitList(L)
void CreateList(SqList *&L, ElemType a[], int n);//用数组创建线性表
bool ListEmpty(SqList *L);//判定是否为空表ListEmpty(L)
int ListLength(SqList *L);//求线性表的长度ListLength(L)
void DispList(SqList *L);//输出线性表DispList(L)
bool GetElem(SqList *L,int i,ElemType &e);//求某个数据元素值GetElem(L,i,e)
int LocateElem(SqList *L, ElemType e);//按元素值查找LocateElem(L,e)
bool ListInsert(SqList *&L,int i,ElemType e);//插入数据元素ListInsert(L,i,e)
<span style="color:#ff0000;">list.cpp:
</span>#include <stdio.h>
#include <malloc.h>
#include "list.h"
bool ListEmpty(SqList *L)
{
return(L->length==0);
}
void CreateList(SqList *&L, ElemType a[], int n)
{
int i;
L=(SqList *)malloc(sizeof(SqList));
for (i=0; i<n; i++)
L->data[i]=a[i];
L->length=n;
}
void DispList(SqList *L)
{
int i;
if (ListEmpty(L)) return;
for (i=0; i<L->length; i++)
printf("%d ",L->data[i]);
printf("\n");
}
void InitList(SqList *&L) //引用型指针
{
L=(SqList *)malloc(sizeof(SqList));
//分配存放线性表的空间
L->length=0;
}
int ListLength(SqList *L)
{
return(L->length);
}
bool GetElem(SqList *L,int i,ElemType &e)
{
if (i<1 || i>L->length) return false;
e=L->data[i-1];
return true;
}
bool ListInsert(SqList *&L,int i,ElemType e)
{
int j;
if (i<1 || i>L->length+1)
return false; //参数错误时返回false
i--; //将顺序表逻辑序号转化为物理序号
for (j=L->length; j>i; j--) //将data[i..n]元素后移一个位置
L->data[j]=L->data[j-1];
L->data[i]=e; //插入元素e
L->length++; //顺序表长度增1
return true; //成功插入返回true
}
int LocateElem(SqList *L, ElemType e)
{
int i=0;
while (i<L->length && L->data[i]!=e) i++;
if (i>=L->length) return 0;
else return i+1;
}
<span style="color:#ff0000;">list.cpp:
</span>#include <stdio.h>
#include <malloc.h>
#include "list.h"
bool ListEmpty(SqList *L)
{
return(L->length==0);
}
void CreateList(SqList *&L, ElemType a[], int n)
{
int i;
L=(SqList *)malloc(sizeof(SqList));
for (i=0; i<n; i++)
L->data[i]=a[i];
L->length=n;
}
void DispList(SqList *L)
{
int i;
if (ListEmpty(L)) return;
for (i=0; i<L->length; i++)
printf("%d ",L->data[i]);
printf("\n");
}
void InitList(SqList *&L) //引用型指针
{
L=(SqList *)malloc(sizeof(SqList));
//分配存放线性表的空间
L->length=0;
}
int ListLength(SqList *L)
{
return(L->length);
}
bool GetElem(SqList *L,int i,ElemType &e)
{
if (i<1 || i>L->length) return false;
e=L->data[i-1];
return true;
}
bool ListInsert(SqList *&L,int i,ElemType e)
{
int j;
if (i<1 || i>L->length+1)
return false; //参数错误时返回false
i--; //将顺序表逻辑序号转化为物理序号
for (j=L->length; j>i; j--) //将data[i..n]元素后移一个位置
L->data[j]=L->data[j-1];
L->data[i]=e; //插入元素e
L->length++; //顺序表长度增1
return true; //成功插入返回true
}
int LocateElem(SqList *L, ElemType e)
{
int i=0;
while (i<L->length && L->data[i]!=e) i++;
if (i>=L->length) return 0;
else return i+1;
}
结果为：
