383 lines
6.7 KiB
C++
383 lines
6.7 KiB
C++
#include <iostream>
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#include <string>
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#include <cmath>
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using namespace std;
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#pragma once
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namespace task7 {
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struct Node
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{
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public:
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int key;
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Node* next;
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};
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Node* newNode(int key);
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Node* rand_list(int size);
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void print_list(Node* head);
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bool is_list_empty(Node* head);
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void push_back(Node* head, int key);
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void push_forward(Node*& head, int key);
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void squeeze_in(Node* head, int pos, int key);
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void behead(Node*& head);
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int list_size(Node* head);
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bool equal(Node* head1, Node* head2);
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bool all_in(Node* head1, Node* head2);
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bool dupes_present(Node* head);
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void head_to_end(Node*& head);
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void end_to_head(Node*& head);
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void merge(Node* head1, Node* head2);
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void reversed(Node*& head);
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bool in_list(Node* head, int key);
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void remove_dupes(Node*& head); // not implemented
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int init()
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{
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cout << "TASK #7" << endl;
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setlocale(LC_ALL, "Russian");
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int n1; cout << "Длина списка 1: "; cin >> n1;
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Node* lst1 = newNode(0);
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cout << "Элементы списка 1: " << endl;
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for (int i = 0; i < n1; i++)
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{
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int num; cin >> num;
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push_back(lst1, num);
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}
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int n2; cout << "Длина списка 2: "; cin >> n2;
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Node* lst2 = newNode(0);
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cout << "Элементы списка 2:" << endl;
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for (int i = 0; i < n2; i++)
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{
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int num; cin >> num;
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push_back(lst2, num);
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}
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behead(lst1);
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behead(lst2);
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cout << "Списки: \n";
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print_list(lst1);
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print_list(lst2);
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cout << "\n\n";
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if (equal(lst1, lst2))
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{
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cout << "Списки равны\n";
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}
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else
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{
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cout << "Списки не равны\n";
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}
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cout << "\n\n";
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if (all_in(lst1, lst2))
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{
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cout << "Все элементы списка 1 входят в список 2\n";
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}
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else
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{
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cout << "Не все элементы списка 1 входят в список 2\n";
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}
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cout << "\n\n";
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if (dupes_present(lst1))
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{
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cout << "В списке 1 есть повторяющиеся элементы";
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}
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else
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{
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cout << "В списке 1 нет повторяющихся элементов";
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}
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cout << "\n\n";
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print_list(lst1);
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cout << "Перенесем первый элемент в конец: \n";
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head_to_end(lst1);
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print_list(lst1);
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cout << "\n\n";
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print_list(lst2);
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cout << "Перенесем последний элемент в начало : \n";
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end_to_head(lst2);
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print_list(lst2);
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cout << "\n\n";
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print_list(lst1);
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print_list(lst2);
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cout << "Перенесем все элементы списка 2 в конец списка 1: \n";
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merge(lst1, lst2);
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print_list(lst1);
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cout << "Развернем список: \n";
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reversed(lst1);
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print_list(lst1);
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cout << "Уберем повторяющиеся элементы: \n";
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remove_dupes(lst1);
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print_list(lst1);
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return 0;
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}
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Node* newNode(int key)
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{
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Node* node = new Node;
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node->key = key;
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node->next = nullptr;
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return node;
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}
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Node* rand_list(int size)
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{
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Node* head = newNode(rand());
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Node* last = newNode(rand());
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head->next = last;
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for (int i = 0; i < size; i++)
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{
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Node* node = newNode(i);
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last->next = node;
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last = node;
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}
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return head->next->next;
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}
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void print_list(Node* head)
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{
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Node* ptr = head;
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while (ptr)
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{
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cout << ptr->key << " -> ";
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ptr = ptr->next;
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}
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cout << "nullptr" << endl;
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}
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bool is_list_empty(Node* head)
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{
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bool empty = true;
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while (head)
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{
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empty = false;
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break;
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}
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return empty;
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}
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void push_back(Node* head, int key)
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{
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Node* ptr = head;
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while (ptr->next)
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{
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ptr = ptr->next;
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}
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ptr->next = newNode(key);
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}
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void push_forward(Node*& head, int key)
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{
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Node* node = newNode(key);
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node->next = head;
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head = node;
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}
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void squeeze_in(Node* head, int pos, int key)
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{
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Node* node_left = head;
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Node* node_right;
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Node* node = newNode(key);
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for (int i = 0; i < pos - 1; i++)
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{
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node_left = node_left->next;
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}
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node_right = node_left->next->next;
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node_left->next = node;
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node->next = node_right;
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}
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void behead(Node*& head)
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{
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Node* _head = head;
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head=head->next;
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delete _head;
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}
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int list_size(Node* head)
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{
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int num = 0;
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Node* ptr = head;
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while (ptr)
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{
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ptr = ptr->next;
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num++;
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}
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return num;
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}
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bool equal(Node* head1, Node* head2)
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{
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if (list_size(head1) != list_size(head2))
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{
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return false;
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}
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Node* ptr1 = head1; Node* ptr2 = head2;
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while (ptr1)
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{
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if (ptr1->key != ptr2->key)
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{
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return false;
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}
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ptr1 = ptr1->next;
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ptr2 = ptr2->next;
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}
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return true;
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}
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bool all_in(Node* head1, Node* head2)
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{
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Node* ptr1 = head1;
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while (ptr1)
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{
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bool is_in = false;
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Node* ptr2 = head2;
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while (ptr2)
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{
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if (ptr1->key == ptr2->key)
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{
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is_in = true;
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break;
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}
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ptr2 = ptr2->next;
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}
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if (!is_in)
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{
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return false;
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}
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ptr1 = ptr1->next;
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}
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return true;
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}
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bool dupes_present(Node* head)
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{
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Node* ptr1 = head;
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while (ptr1)
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{
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int count = -1;
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Node* ptr2 = head;
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while (ptr2)
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{
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if (ptr1->key == ptr2->key)
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{
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count++;
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if (count > 1)
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{
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return true;
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}
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}
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ptr2 = ptr2->next;
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}
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ptr1 = ptr1->next;
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}
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return false;
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}
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void head_to_end(Node*& head)
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{
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Node* _head = head;
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Node* ptr = head;
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while (ptr->next)
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{
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ptr = ptr->next;
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}
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ptr->next = _head;
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head = head->next;
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_head->next = NULL;
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}
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void end_to_head(Node*& head)
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{
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Node* ptr = head;
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while (ptr->next->next)
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{
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ptr = ptr->next;
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}
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ptr->next->next = head;
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head = ptr->next;
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ptr->next = NULL;
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}
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void merge(Node* head1, Node* head2)
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{
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Node* ptr = head1;
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while (ptr->next)
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{
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ptr = ptr->next;
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}
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Node* ptr2 = head2;
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while (ptr2)
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{
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ptr->next = ptr2;
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ptr = ptr2;
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ptr2 = ptr2->next;
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}
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}
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void reversed(Node*& head)
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{
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Node* rev = nullptr;
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Node* ptr = head;
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while (ptr)
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{
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push_forward(rev, ptr->key);
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ptr = ptr->next;
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}
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head = rev;
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}
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bool in_list(Node* head, int key)
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{
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Node* ptr = head;
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while (ptr)
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{
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if (ptr->key == key)
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{
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return true;
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}
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ptr = ptr->next;
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}
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return false;
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}
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void remove_dupes(Node*& head)
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{
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Node* buffer = newNode(head->key);
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Node* result = newNode(head->key);
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while (head)
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{
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if (!in_list(buffer, head->key))
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{
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push_back(result, head->key);
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push_back(buffer, head->key);
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}
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head = head->next;
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}
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head = result;
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}
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}
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