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| #include <iostream>
#include <fstream>
#include <clocale>
#include <stdio.h>
#include <windows.h>
using namespace std;
struct Node
{
int num;
Node* prev;
Node* next;
};
typedef Node* Pnode;
Pnode creatnode(int x)
{
Pnode p = new Node;
p->num = x;
p->next = p->prev = NULL;
return p;
}
void printpr(Pnode Head)
{
while (Head)
{
cout << Head->num << " ";
Head = Head->next;
}
cout << endl;
}
void printob(Pnode Tail)
{
while (Tail)
{
cout << Tail->num << " ";
Tail = Tail->prev;
}
cout << endl;
}
Pnode find(Pnode Head, int x, bool &p)
{
p = false;
while (Head)
{
if (Head->num == x)
{
p = true;
return Head;
}
else
Head = Head->next;
}
}
void deletenode(Pnode &Head, Pnode &Tail, Pnode x)
{
if (x==Head)
if (x == Tail) Head = Tail = NULL;
else
{
Head = Head->next;
Head->prev = NULL;
}
else
{
if (x == Tail)
{
Tail = Tail->prev;
Tail->next = NULL;
}
else
{
x->prev->next = x->next;
x->next->prev = x->prev;
}
}
}
void insert_end(Pnode &Head, Pnode &Tail, Pnode p)
{
if (!Head)
Head = Tail = p;
else
{
Tail->next = p;
p->prev = Tail;
Tail = p;
}
}
void Create1(Pnode &Head, Pnode &Tail)
{
ifstream f;
f.open("input.txt", ios::in);
int x;
while (!f.eof())
{
f >> x;
insert_end(Head, Tail, creatnode(x));
}
f.close();
}
void insertb(Pnode q, Pnode p, Pnode &Head, Pnode &Tail)
{
if (q == Head)
{
p->next = Head;
Head->prev = p;
Head = p;
if (q == Tail) Tail = Head->next;
}
else
{
q->prev->next = p;
p->next = q;
p->prev = q->prev;
q->prev = p;
}
}
void inserta(Pnode q, Pnode p, Pnode &Head, Pnode &Tail)
{
if (q == Tail)
{
p->prev = Tail;
Tail->next = p;
Tail = p;
if (q == Head) Head = Tail->prev;
}
else
{
q->next->prev = p;
p->prev = q;
p->next = q->next;
q->next = p;
}
}
void add(Pnode &Head, Pnode &Tail, int x)
{
Pnode p, q;
p = creatnode(x);
if (!Head) Head = Tail = p;
else
{
q = Head;
while (q->next != NULL && q->num <= x)
q = q->next;
if (q->next == NULL)
if (q == Head)
if (q->num > x)
insertb(q, p, Head, Tail);
else
inserta(q, p, Head, Tail);
else
if (q->num > x)
insertb(q, p, Head, Tail);
else
inserta(q, p, Head, Tail);
else
insertb(q, p, Head, Tail);
}
}
void Create2(Pnode &Head, Pnode &Tail)
{
ifstream f;
f.open("input.txt", ios::in);
int x;
while (!f.eof())
{
f >> x;
add(Head, Tail, x);
}
f.close();
}
void main()
{
SetConsoleOutputCP(1251);
SetConsoleCP(1251);
setlocale(LC_ALL, "rus");
Pnode Head1 = NULL, Tail1 = NULL, Head2 = NULL, Tail2 = NULL, rezfind= NULL;
Create1(Head1, Tail1);
printpr(Head1);
printob(Tail1);
Create2(Head2, Tail2);
printpr(Head2);
printob(Tail2);
int x;
bool p = false;
cout << "Введите число для поиска: ";
cin >> x;
cout << endl;
rezfind=find(Head2, x, p);
if (p)
cout << "Элемент с заданным значением найден"<< endl;
else
cout << "Такого значения нет!"<< endl;
cout << "Введите число которое вы хотите удалить: ";
cin >> x;
cout << endl;
rezfind = find(Head2, x, p);
if (p)
{
deletenode(Head2, Tail2, rezfind);
cout << "Результирующий список: ";
printpr(Head2);
}
else
cout << "Такого числа нет!" << endl;
} |
(
