设计算法将一个带头结点的单链表A分解为两个具有相同结构的链表B、C，其中B表的结点为A表中值小于零的结点，而C表的结点为A表中值大于零的结点（链表A中的元素为非零整数，要求B、C表利用A表的结点） for example: A -1 2 3 -2 4 5
#include <iostream>
using namespace std;typedef int Elemtype;
#define ERROR 0;
#define OK 1;typedef struct LNode
{Elemtype data; //结点保存的数据struct LNode* next; //结构体指针
}LNode, * LinkList;/*单链表初始化*/
bool Init_LinkList(LinkList& L)
{L = (LinkList)malloc(sizeof(LNode)); //新建头结点if (L == NULL){return ERROR;}L->data = 0;L->next = NULL;return OK;
}/*单链表头插法*/
bool LinkList_head_instert(LinkList& L)
{int x = 0;LNode* p = NULL;while (cin >> x){p = (LinkList)malloc(sizeof(LNode));if (p != NULL) //防止分配地址失败{p->data = x;p->next = L->next;L->next = p;if (cin.get() == '\n') break; //检测换行符}else{exit(0);cout << "内存分配失败" << endl;}}return OK;
}/*单链表尾插法*/
bool LinkList_tail_instert(LinkList& L)
{int x = 0;LNode* p = NULL;LNode* r = NULL;r = L;while (cin >> x){p = (LinkList)malloc(sizeof(LNode));if (p != NULL) //防止分配地址失败{p->data = x;p->next = NULL;r->next = p;r = p;if (cin.get() == '\n') break; //检测换行符}else{exit(0);cout << "内存分配失败" << endl;}}return OK;
}/*单链表遍历*/
bool LinkList_All_value(LinkList L)
{if (L->next == NULL){cout << "链表为空" << endl;return ERROR;}LNode* s = NULL;s = L->next;while (s != NULL){cout << s->data << " ";s = s->next;}cout << endl;free(s);return OK;
}/*单链表长度*/
int LinkList_length(LinkList L)
{int count = 0;LNode* s = NULL;s = L->next;while (s != NULL){count++;s = s->next;}return count;
}/*清空单链表*/
void Clear_LinkList(LinkList& L)
{LNode* p = L->next;LNode* q = NULL;while (p != NULL){q = p->next;free(p);p = q;}L->next = NULL;
}/*销毁单链表*/
void Destory_LinkList(LinkList& L)
{LNode* p = NULL;LNode* q = NULL;p = L;while (p != NULL){q = p->next;free(p);p = q;}L = NULL;
}bool zero_panding(LinkList& A, LinkList& B, LinkList& C)
{LNode* pa = NULL; LNode* pb = NULL;LNode* pc = NULL;pa = A->next;A->next = NULL;pb = B; pc = C;if (pa == NULL){cout << "单链表为空" << endl;return ERROR;}while (pa != NULL){if (pa->data < 0){pb->next = pa; //尾插pa = pa->next;pb = pb->next;}else //pa->data > 0{pc->next = pa; //尾插pa = pa->next;pc = pc->next;}}pb->next = NULL;pc->next = NULL;return OK;
}
/*设计算法将一个带头结点的单链表A分解为两个具有相同结构的链表B、C，其中B表的结点为A表中值小于
零的结点，而C表的结点为A表中值大于零的结点（链表A中的元素为非零整数，要求B、C表利用A表的结点）*/
//for example: A -1 2 3 -2 4 5
int main(void)
{LinkList A = NULL;Init_LinkList(A);LinkList_tail_instert(A);//test1: -1 2 3 -2 4 5 test2: -1 2 3 -2 4 5 7 -10 test3: -1 2 3 -2LinkList_All_value(A);LinkList B = NULL;Init_LinkList(B); //新建B链表(带头节点)LinkList C = NULL;Init_LinkList(C); //新建C链表(带头节点)zero_panding(A, B, C);LinkList_All_value(B);LinkList_All_value(C);return 0;
}
