线性表合并（链表实现）

#include <iostream>
using namespace std;
typedef struct LNode
{
    int data;
    struct LNode *next;
} LNode, *LinkList;
void Input(LinkList &Head)
{
    Head = new LNode;
    Head->next = NULL;
    LinkList p, r;
    r = Head;
    cout << "请输入有序集合元素个数：" << endl;
    int n;
    cin >> n;
    for (; n > 0; n--)
    {
        p = new LNode;
        cout << "请输入元素：";
        cin >> p->data;
        p->next = NULL;
        r->next = p;
        r = p;
    }
}
void MergeList(LinkList &HA, LinkList &HB)
{
    LinkList pa, pb, HC, pc;
    pa = HA->next;
    pb = HB->next;
    HC = HA;
    pc = HC;
    while (pa && pb)
    {
        if (pa->data <= pb->data)
        {
            pc->next = pa;
            pc = pa;
            pa = pa->next;
        }
        else
        {
            pc->next = pb;
            pc = pb;
            pb = pb->next;
        }
    }
    pc->next = pa ? pa : pb;
    delete HB;
    pa = HA->next;
    cout << "合并后的集合" << endl;
    while (pa)
    {
        cout << pa->data << endl;
        pa = pa->next;
    }
}
int main()
{
    LinkList HA, HB;
    Input(HA);
    cout << endl
         << endl;
    Input(HB);
    MergeList(HA, HB);
    return 0;
}

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