数据结构趣题——在原表空间进行链表的归并

   1: #include <stdio.h>
   2: #include <stdlib.h>
   3:  
   4: /*定义int为ElemType类型*/
   5: typedef int ElemType;
   6:  
   7: /*定义链表的结点类型*/
   8: typedef struct node {
   9:     ElemType data;   /*数据域*/
  10:     struct node *next;  /*指针域*/
  11: } LNode, *LinkList;
  12:  
  13: /*创建一个长度为n的链表,并输入数据*/
  14: LinkList GreatLinkList(int n) {
  15:     LinkList p, r, list = NULL;
  16:     ElemType e;
  17:     int i;
  18:  
  19:     for(i = 1; i <= n; i++) {
  20:         scanf("%d", &e);
  21:         p = (LinkList)malloc(sizeof(LNode));
  22:         p->data = e;
  23:         p->next = NULL;
  24:  
  25:         if(!list)
  26:             list = p;
  27:         else
  28:             r->next = p;
  29:  
  30:         r = p;
  31:     }
  32:  
  33:     return list;
  34: }
  35:  
  36: /*向链表中插入结点,并向该结点的数据域中存放数据e*/
  37: void insertList(LinkList *list, LinkList q, ElemType e) {
  38:     LinkList p;
  39:     p = ( LinkList)malloc(sizeof(LNode));
  40:     p->data = e;
  41:  
  42:     if(!*list) {
  43:         *list = p;
  44:         p->next = NULL;
  45:     }
  46:     else {
  47:         p->next = q->next;
  48:         q->next = p;
  49:     }
  50: }
  51:  
  52: void insertNode(LinkList *q1, LinkList *q2, LinkList *p, LinkList *l2) {
  53:     if(*q1 == *q2)
  54:     {
  55:         (*p)->next = *q2;
  56:         *l2 = *q2 = *q1 = *p;
  57:  
  58:     }
  59:     else
  60:     {
  61:         (*q2)->next = *p;
  62:         (*p)->next = *q1;
  63:         (*q2) = (*q2)->next;
  64:     }
  65: }
  66:  
  67: void MergeLink(LinkList l1, LinkList l2 , LinkList *l3)
  68: {
  69:     /*将链表l1,l2有序归并,l3指向归并后的新链表*/
  70:     LinkList p, q1, q2;
  71:     q1 = q2  = l2; /*l3指向l2*/
  72:     p = l1;
  73:  
  74:     while(p != NULL && q1 != NULL) {
  75:         if(p->data >= q1->data) {
  76:             q2 = q1;
  77:             q1 = q1->next;
  78:         }
  79:         else {
  80:             l1 = l1->next ;
  81:             insertNode(&q1, &q2, &p, &l2);  /*将p指向的结点茶道q2之前q1之后*/
  82:             // q2 = q2->next;
  83:             p = l1;
  84:         }
  85:     }
  86:  
  87:     if(q1 == NULL) q2->next = p;
  88:  
  89:     *l3 = l2;
  90:  
  91:  
  92: }
  93:  
  94: int main()
  95: {
  96:     ElemType e;
  97:     LinkList  l1, l2, l3, q;
  98:  
  99:     printf("Please input the contents of Link1\n");
 100:     q = l1 = GreatLinkList(1); /*创建一个链表结点,q和l指向该结点*/
 101:  
 102:     scanf("%d", &e);
 103:  
 104:     while(e)             /*循环地输入数据,同时插入新生成的结点*/
 105:     {
 106:         insertList(&l1, q, e) ;
 107:         q = q->next;
 108:         scanf("%d", &e);
 109:     }
 110:  
 111:     printf("Please input the contents of Link2\n");
 112:     q = l2 = GreatLinkList(1); /*创建一个链表结点,q和l指向该结点*/
 113:  
 114:     scanf("%d", &e);
 115:  
 116:     while(e)             /*循环地输入数据,同时插入新生成的结点*/
 117:     {
 118:         insertList(&l2, q, e) ;
 119:         q = q->next;
 120:         scanf("%d", &e);
 121:     }
 122:  
 123:     MergeLink(l1, l2, &l3); /*合并l2,l2并用l3指向合并后的链表*/
 124:  
 125:     q = l3;
 126:  
 127:     printf("The merge of link1 and link 2 is\n");
 128:  
 129:     while(q)            /*打印出合并后的链表*/
 130:     {
 131:         printf("%d ", q->data) ;
 132:         q = q->next;
 133:     }
 134: }

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