Тема: списки

#include <iostream>
#include <list>
#include <algorithm>
 
int main()
{
    std::list<int> l {1, 2, 3, 4, 5};
    std::swap(*l.begin(), *l.rbegin());
    for (auto &x: l)
        std::cout << x << " ";
}

#include <iostream>
#include <time.h>
using namespace std;
 
struct element {
    int data;
    element* next;
} *head,*tail;
 
void new_list() {
    srand(time(NULL));
    head = NULL;
    for (int i = 0; i < 7; i++) {
        element* x = new element;
        x->data = rand() % 20;
        x->next = NULL;
        if (head == NULL) {
            head = tail = x;
        }
        else {
            tail->next = x;
            tail = x;
 
        }
    }
}
void show() {
    element * temp = head;
    while (temp != NULL) {
        cout<<temp->data<<" ";
        temp = temp->next;
    }
}
 
void change_place() {
    element* temp = head;
    tail->next = head;
    head = tail;
    while (temp -> next != tail) {
        temp=temp->next;
    }
    temp->next = NULL;
    temp = tail;
    cout<<head;
}
void del() {
    element* temp = head;
    while (head) {
        temp = head->next;
        delete head;
        head = temp;
 
    }
}
        
int main() {
    new_list();
    show();
    change_place();
    cout<<"After the change: "<<endl;
    show();
    del();
    system("pause");
    return 0;
}