114 lines
1.8 KiB
C++
114 lines
1.8 KiB
C++
#include <iostream>
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using namespace std;
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#pragma once
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namespace task8 {
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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); //ñîçäàåò óçåë
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Node* rand_list(int size); //ñîçäàåò ñïèñîê
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void print_list(Node* head); //ïèøåò ýëåìåíòû ñïèñêà
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void cycle(Node*&head, int offset); //ñìåùàåò ýëåìåíòû â ñïèñêå öèêëè÷åñêè
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int init()
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{
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int n; cout << "Enter size: "; cin >> n;
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Node* lst = rand_list(n);
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print_list(lst);
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int offset; cout << "Enter offset: "; cin >> offset;
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cycle(lst, offset);
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print_list(lst);
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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+1);
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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 push_back(Node* head, int key)
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{
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Node* last = nullptr;
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Node* ptr = head;
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while (ptr)
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{
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last = ptr;
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ptr = ptr->next;
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}
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ptr = newNode(key);
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last->next = ptr;
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}
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Node* 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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return node;
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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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void cycle(Node*& head, int offset)
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{
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int amt = 0;
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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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amt++;
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}
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ptr->next = head;
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Node* prv = ptr;
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if (offset < 0)
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{
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offset = abs(amt+1 + offset);
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}
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for (int i = 0; i < offset; i++)
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{
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prv = prv->next;
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head = head->next;
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}
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prv->next = nullptr;
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}
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} |