本文共 4083 字,大约阅读时间需要 13 分钟。
在进行多组有序数据的处理任务时,传统的数据结构往往难以高效地处理多行数据的插入、查询和删除操作。本文将详细介绍一种高效的数据结构设计,该结构能够支持按照从小到大的顺序输入多组数据,并实现针对特定行数据的快速访问和删除。
struct head { Node* next; head* down; head* up;};
struct Node { int data; Node* next;};
head
结构,其 next
指针指向当前行的首节点。tail
的 down
指针指向下一行的首部,up
指针指向上一行的首部。环境假设:
up
和 tail
的 down
指针初始化为 NULL
。逻辑步骤如下:
#include#include namespace SORT { using namespace std; struct Node { int data; Node* next; }; struct head { Node* next; head* down; head* up; }; void Create(Node*& root) { int tmp; if (root == NULL) { cin >> tmp; if (tmp == -1) { return; } root = new Node; root->data = tmp; root->next = NULL; Create(root->next); } } void Destory(head*& root) { head* p = root; head* q = root->down; Node* tmp = NULL; int num = 0; while (p != NULL && q != NULL) { while (p != NULL) { if (p->next->data < q->next->data) { q = p; p = p->down; } else { p = p->down; } } if (q->next->data != num) { cout << q->next->data << " "; num = q->next->data; } if (q->up == NULL) { if (q->next->next == NULL) { p = root; if (root->down == NULL) { delete root->next; delete root; return; } root->down->up = NULL; root = root->down; delete p->next; delete p; p = q = root; tmp = NULL; } else { tmp = q->next; q->next = q->next->next; delete tmp; tmp = NULL; p = q = root; } } else { if (q->next->next == NULL) { q->up->down = q->down; if (q->down == NULL) { q->up->down = NULL; delete q->next; delete q; } else { q->down->up = q->up; delete q->next; delete q; } p = q = root; tmp = NULL; } else { tmp = q->next; q->next = q->next->next; delete tmp; tmp = NULL; p = q = root; } } } } void CreateHead(int n) { head* root = new head; root->down = NULL; root->up = NULL; root->next = NULL; Create(root->next); head* p = root; for (int i = 1; i < n; i++) { head* N = new head; N->down = NULL; N->next = NULL; N->up = p; p->down = N; p = N; Create(p->next); } Destory(root); }}int main() { int num; cin >> num; SORT::CreateHead(num); return 0;}
#include#include namespace SORT { using namespace std; // ... 以上代码 inward ... int main() { int num; cin >> num; SORT::CreateHead(num); return 0; }}
root
的重新赋值和多个 head
结构之间的关系。 -删除操作时,需要特别注意head
结构和 Node
结构的指针循环引用问题。通过上述设计与实现,可以轻松实现针对多组有序数据进行高效的插入、查询和删除操作。本文展示的逻辑结构和实现方法为用户提供了一个清晰的参考,适用于需要处理多行有序数据的各种场景。
转载地址:http://rgokk.baihongyu.com/