miniList

#include<iostream>
#include<vector>
#include<string>
#include<algorithm>
#include<random>
using namespace std;
random_device r;
class L {
    L* p = nullptr;
    int inf;
public:
    L(int q) {
        inf = q;
    }
    L* soz(int );
    double sr();
    void zm(int , int );
    void men();
    void vuv() {
        cout << this->inf << ' ';
        L* w = this->p;
        while (w != nullptr) {
            cout << w->inf << ' ';
            w = w->p;
        }
        cout << '\n';
    }

};

int main() {
    L*u(0);
    u = u->soz(5);
    u->vuv();
    u->zm(4,0);
    u->vuv();
    u->men();
    u->vuv();

    system("pause");

}
L* L::soz(int n) {
    L* o = new L(r() % 5);
    L* q = o;
    for (int i = 1; i < n; ++i) {
        L* v = new L(r() % 5);
        o->p = v;
        o = v;
    }
    return q;
}
double L:: sr() {
        int s = this->inf;
        int k = 1;
        L* w = this->p;
        while (w != nullptr) {
            s += w->inf;
            ++k;
            w = w->p;
        }
        return s * 1.0 / k;
}
void L:: zm(int x, int y) {
    if (this->inf == x) {
         this->inf = y;
    }
    L* w = this->p;
    while (w != nullptr) {
        if (w->inf == x) {
            w->inf = y;
        }
        w = w->p;
    }
}
void L:: men() {
    L* u = this;
    L* w = this->p;
    if (w != nullptr) {
        while (w->p != nullptr) {
            w = w->p;
        }
        swap(u->inf, w->inf);
    }
}