#include <iostream>
#include <time.h>

using namespace std;

int main()
{

	int arraySize, randRangeFrom, randRangeTo;
	cout << "Enter element count: ";
	cin >> arraySize;
	if (arraySize < 1) {
		cout << "\nCount must be posivive integer.\n\n";
		return 0;
	}

	float* arr = new float[arraySize];
	char v(0);

	cout << "\n\nHow would You like to fill in array, (M)anually or (A)utomatically? \n:";
	cin >> v;

	if (v == 'M') {
		for (int i = 0; i < arraySize; i++)
		{
			cout << "Enter element " << i + 1 << ": ";
			cin >> arr[i];
		}

	}

	else if (v == 'A') {
		cout << "Enter initial range value: ";
		cin >> randRangeFrom;

		cout << "Enter end range value: ";
		cin >> randRangeTo;
		cout << endl;

		srand(time(NULL));
		for (int i = 0; i < arraySize; i++)
		{
			arr[i] = (rand() % (randRangeTo * 10 - randRangeFrom * 10 + 1) + randRangeFrom * 10) / 10.0;
		}

	}

	else {
		cout << "\nI expected \"M\" or \"A\".\n";
		return 0;

	}

	cout << "Your array is ready:\n";
	for (int i = 0; i < arraySize; i++)
	{
		cout << "(" << i << ") " << arr[i] << "  ";
	}

	cout << "\n\nNow starting our Variant 6 tasks:\n\n\n1. Find minimum array element by the module.\n";

	float min = fabs(arr[0]);
	for (int i = 1; i < arraySize; i++)
	{
		if (min > fabs(arr[i])) min = fabs(arr[i]);
	}
	cout << "Minimum array element by the module is: " << min;

	cout << "\n\n\n2. Calculate the sum of the elements between the first and the last positive elements of the array.\n";

	float sumBetween = 0;
	int firstPos = 0, lastPos = 0;
	bool isFirstPositiveFound = false;
	for (int i = 0; i < arraySize; i++) {
		if (arr[i] >= 0) {
			if (isFirstPositiveFound) {
				lastPos = i;
			}
			else {
				firstPos = i;
				isFirstPositiveFound = true;
			}
		}
	}

	for (int i = firstPos + 1; i < lastPos; i++) {
		sumBetween += arr[i];
	}

	cout << "The sum of the elements between the first (" << firstPos << ") and the last (" << lastPos << ") positives is: " << sumBetween;
	
	cout << "\n\n\n3. Reorder the array so that zero value elements are placed before all others.\n";


	for (int i = 0; i < arraySize; i++)
	{
		if (arr[i] == 0)
		{
			for (int j = i - 1; j >= 0; j--)
				if (arr[j] != 0)
				{
					float tmp = arr[j];
					arr[j] = arr[j + 1];
					arr[j + 1] = tmp;
				}
		}
	}

	for (int i = 0; i < arraySize; i++)
	{
		cout << arr[i] << "  ";
	}

	cout << "\n\nIf there were zeroes, they are at the beginning of the array." << endl;

	delete[] arr;
	return 0;
}