Visual C++ .NET/Collections/sort — различия между версиями
Admin (обсуждение | вклад) м (1 версия) |
Admin (обсуждение | вклад) м (1 версия) |
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Текущая версия на 15:05, 26 мая 2010
Содержание
Sort a list
<source lang="csharp">
- include "stdafx.h"
- include <cliext/list>
using namespace System; using namespace cliext; using namespace System::Collections::Generic; ref class MyClass{ public:
String^ Name; MyClass() : Name(String::Empty) { } MyClass(String^ name) : Name(name) { } MyClass(const MyClass% orig){ Name = orig.Name; } MyClass% operator=(const MyClass% orig){ if (this != %orig) Name = orig.Name; return *this; } ~MyClass() { } bool operator<(const MyClass^ rhs){ return (Name->CompareTo(rhs->Name) < 0); } bool operator>(const MyClass^ rhs){ return (Name->CompareTo(rhs->Name) > 0); } bool operator==(const MyClass^ rhs){ return (Name->Equals(rhs->Name)); }
}; int main(array<System::String ^> ^args) {
list<MyClass^> pets; pets.push_front(gcnew MyClass("A")); pets.push_front(gcnew MyClass("B")); pets.push_front(gcnew MyClass("C")); pets.push_front(gcnew MyClass("D"));
ICollection<MyClass^>^ genericIList = %pets; genericIList->Add(gcnew MyClass("E")); pets.sort(); for each (MyClass^ pet in genericIList) System::Console::Write("{0} ", pet->Name); return (0);
}
</source>
sort and functor
<source lang="csharp">
- include "stdafx.h"
- include <cliext/vector>
- include <cliext/functional>
- include <cliext/algorithm>
using namespace System; using namespace cliext; using namespace System::Collections::Generic; ref class MyClass{ public:
String^ Name; MyClass() : Name(String::Empty) { } MyClass(String^ name) : Name(name) { } MyClass(const MyClass% orig){ Name = orig.Name; } MyClass% operator=(const MyClass% orig){ if (this != %orig) Name = orig.Name; return *this; } ~MyClass() { } bool operator<(const MyClass^ rhs){ return (Name->CompareTo(rhs->Name) < 0); } bool operator>(const MyClass^ rhs){ return (Name->CompareTo(rhs->Name) > 0); } bool operator==(const MyClass^ rhs) { return (Name->Equals(rhs->Name)); }
}; int main(array<System::String ^> ^args) {
vector<MyClass^> myCollection; myCollection.push_back(gcnew MyClass("A")); myCollection.push_back(gcnew MyClass("B")); myCollection.push_back(gcnew MyClass("C")); myCollection.push_back(gcnew MyClass("D")); for each (MyClass^ pet in myCollection) Console::Write("{0} ", pet->Name); Console::Write("\n\nsort(F,L, functor):\n "); sort(myCollection.begin(), myCollection.end(), greater<MyClass^>()); for each (MyClass^ pet in myCollection) Console::Write("{0} ", pet->Name); return 0;
}
</source>
Sort list by a user-defined functor
<source lang="csharp">
- include "stdafx.h"
- include <cliext/list>
using namespace System; using namespace cliext; using namespace System::Collections::Generic; ref class MyClass{ public:
String^ Name; MyClass() : Name(String::Empty) { } MyClass(String^ name) : Name(name) { } MyClass(const MyClass% orig){ Name = orig.Name; } MyClass% operator=(const MyClass% orig){ if (this != %orig) Name = orig.Name; return *this; } ~MyClass() { } bool operator<(const MyClass^ rhs){ return (Name->CompareTo(rhs->Name) < 0); } bool operator>(const MyClass^ rhs){ return (Name->CompareTo(rhs->Name) > 0); } bool operator==(const MyClass^ rhs){ return (Name->Equals(rhs->Name)); }
}; ref class MyGreaterThanFunctor{ public:
bool operator()(MyClass^ a, MyClass^ b) { return a > b; }
}; int main(array<System::String ^> ^args) {
list<MyClass^> pets; pets.push_front(gcnew MyClass("A")); pets.push_front(gcnew MyClass("B")); pets.push_front(gcnew MyClass("C")); pets.push_front(gcnew MyClass("D"));
list<MyClass^> puppies; puppies.push_front(gcnew MyClass("E")); puppies.push_front(gcnew MyClass("F")); pets.sort(gcnew MyGreaterThanFunctor()); puppies.sort(greater<MyClass^>()); pets.merge(puppies, greater<MyClass^>()); for each (MyClass^ pet in pets) System::Console::Write("{0} ", pet->Name); return (0);
}
</source>
Sort list by greater-functor
<source lang="csharp">
- include "stdafx.h"
- include <cliext/list>
using namespace System; using namespace cliext; using namespace System::Collections::Generic; ref class MyClass{ public:
String^ Name; MyClass() : Name(String::Empty) { } MyClass(String^ name) : Name(name) { } MyClass(const MyClass% orig){ Name = orig.Name; } MyClass% operator=(const MyClass% orig){ if (this != %orig) Name = orig.Name; return *this; } ~MyClass() { } bool operator<(const MyClass^ rhs){ return (Name->CompareTo(rhs->Name) < 0); } bool operator>(const MyClass^ rhs){ return (Name->CompareTo(rhs->Name) > 0); } bool operator==(const MyClass^ rhs){ return (Name->Equals(rhs->Name)); }
}; ref class MyGreaterThanFunctor{ public:
bool operator()(MyClass^ a, MyClass^ b) { return a > b; }
}; int main(array<System::String ^> ^args) {
list<MyClass^> pets; pets.push_front(gcnew MyClass("A")); pets.push_front(gcnew MyClass("B")); pets.push_front(gcnew MyClass("C")); pets.push_front(gcnew MyClass("D"));
list<MyClass^> puppies; puppies.push_front(gcnew MyClass("E")); puppies.push_front(gcnew MyClass("F")); pets.sort(gcnew MyGreaterThanFunctor()); puppies.sort(greater<MyClass^>()); pets.merge(puppies, greater<MyClass^>()); for each (MyClass^ pet in pets) System::Console::Write("{0} ", pet->Name); return (0);
}
</source>