#include <iostream>
#include <cmath>
#include <string>
#include <algorithm>
using namespace std;

void selection_sort(int*, int, bool);
void printarray(int*, int);
bool ascending(int, int);
bool descending(int, int);

int main()
{
	int arr[] = { 5, 3, 7, 1, 54, 76 };
	int* ptr = arr;
	int length = sizeof(arr) / sizeof(int);

	bool (*comparison) (int, int);

	selection_sort(arr, length, ascending);
	printarray(arr, length);

	return 0;
}


void selection_sort(int* arr, int length, bool (*comparison)(int, int) )        // em nghĩ bị lỗi ở đây
{
	for (int i = 0; i < length; i++)
	{
		int mindefault = i;
		for (int e = i + 1; e < length; e++)
		{
			if ( comparison(arr[mindefault], arr[e]) )
				mindefault = e;
		}
		swap(arr[i], arr[mindefault]);
	}
}

void printarray(int* ptr, int length)
{
	for (int i = 0; i < length; i++)
		cout << ptr[i] << " ";
}


bool ascending(int left, int right)
{
	return (left > right);
}

bool descending(int left, int right)
{
	return (left < right);
}