Кодът представлява проста реализация на абстрактен тип опашка.
Класът включва следните методи:
- Push (добавя елемнт към опашката)
- Pop (взима елемент от опашката)
- Print (отпечатва елементите на опашката)
- WriteBinary (записва елементите на опашката в двоичен файл)
- ReadBinary (чете от двоичен файл)
- Count (преброява и връща като резултат броя на елементите в опашката)
- RemoveAll (премахва всички елементи на опашката)
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| #include <iostream>
#include <fstream>
using namespace std;
template <class Type>
struct Element
{
Type Data; Element<Type> *Next; };
template <class Type>
class Queue
{
private:
Element<Type> *Top; public:
Queue()
{
Top = NULL;
}
~Queue()
{
RemoveAll();
}
void Push(Type pushData)
{
if (!Top)
{
Element<Type> *E = new Element<Type>;
E->Data = pushData;
E->Next = NULL;
Top = E;
return;
}
Element<Type> *Step = Top;
while(Step->Next) Step = Step->Next;
Element<Type> *E = new Element<Type>;
E->Data = pushData;
E->Next = NULL;
Step->Next = E;
}
void Pop(Type& popData)
{
if (!Top)
{
cout<<"Empty queue."<<endl;
return;
}
popData = Top->Data;
Element<Type> *Temp = Top;
Top = Top->Next;
delete Temp;
}
void Print()
{
if (!Top)
{
cout<<"Empty queue."<<endl;
return;
}
Element<Type> *E = Top;
while(E)
{
cout<<"("<<E->Data<<") ";
E = E->Next;
}
cout<<endl;
}
void WriteBinary(char *FileName)
{
ofstream F;
F.open(FileName, ios::binary);
if (!F)
{
cout<<"Error!"<<endl;
return;
}
Element<Type> *Step = Top;
while(Step)
{
F.write((char*)&(Step->Data), sizeof(Type));
Step = Step->Next;
}
cout<<"Successfull."<<endl;
F.close();
}
void ReadBinary(char* FileName)
{
ifstream F;
F.open(FileName, ios::binary);
if (!F)
{
cout<<"Error!"<<endl;
return;
}
Type Step;
while(F.read((char*)&(Step), sizeof(Type))) cout<<"("<<Step<<") ";
cout<<endl;
}
int Count()
{
int Counter = 0;
if (!Top) return Counter;
Element<Type> *Step = Top;
while(Step)
{
Counter++;
Step = Step->Next;
}
return Counter;
}
void RemoveAll()
{
while(Top)
{
Element<Type> *Temp = Top;
Top = Top->Next;
delete Temp;
}
}
};
int main()
{
Queue<int> TestQueue;
cout<<"Push elements:"<<endl;
cout<<"Push (3)"<<endl;
TestQueue.Push(3);
cout<<"Push (5)"<<endl;
TestQueue.Push(5);
cout<<"Push (7)"<<endl;
TestQueue.Push(7);
cout<<"Push (9)"<<endl;
TestQueue.Push(9);
cout<<"\nPrint queue:"<<endl;
TestQueue.Print();
cout<<"\nCount elements:"<<endl;
cout<<"["<<TestQueue.Count()<<"]"<<endl;
cout<<"\nPop elements:"<<endl;
int popOne;
TestQueue.Pop(popOne);
cout<<"Pop ("<<popOne<<")"<<endl;
int popTwo;
TestQueue.Pop(popTwo);
cout<<"Pop ("<<popTwo<<")"<<endl;
cout<<"\nPrint queue:"<<endl;
TestQueue.Print();
cout<<"\nWrite to file:"<<endl;
TestQueue.WriteBinary("QueueLog.g");
cout<<"\nRead from file:"<<endl;
TestQueue.ReadBinary("QueueLog.g");
system("PAUSE");
return EXIT_SUCCESS;
}
|
