c++ 整数列表排序

[c++]代码库

//排序 整数列表
#include <list>
#include <iostream>

using namespace std;

void PrintListContents(const list<int>& listInput);
bool SortPredicate_Descending(const int& lsh, const int& rsh);

int main() {
	std::list<int> listIntegers;

	// Insert elements at the beginning...
	listIntegers.push_front(444);
	listIntegers.push_front(300);
	listIntegers.push_front(21111);

	listIntegers.push_front(-1);
	listIntegers.push_front(0);

	// Insert an element at the end...
	listIntegers.push_back(-5);

	cout << "Initial contents of the list are - " << endl;
	PrintListContents(listIntegers);

	listIntegers.sort();

	cout << "Order of elements after sort():" << endl;
	PrintListContents(listIntegers);

	listIntegers.sort(SortPredicate_Descending);
	cout << "Order of elements after sort() with a predicate:" << endl;

	PrintListContents(listIntegers);

	return 0;
}

void PrintListContents(const list<int>& listInput) {
	if (listInput.size() > 0) {
		// Write the output...
		cout << "{ ";

		std::list<int>::const_iterator iElementLocator;
		for (iElementLocator = listInput.begin()
		; iElementLocator != listInput.end(); ++iElementLocator)
			cout << *iElementLocator << " ";

		cout << "}" << endl << endl;
	} else
		cout << "List is empty!" << endl;
}

bool SortPredicate_Descending(const int& lsh, const int& rsh) {
	return (rsh < lsh);
}