#include <iostream>
#include <windows.h>
#include <mmsystem.h>
#include <time.h>
#include <iostream>
#include <ctime>
#include <cstdlib>
using namespace std;

int n = 0;
int i = 0;

int binarySearch(int *list1, int first, int last, int value) {
	cout << "please enter a value to search = ";
	cin >> value;
		int answer = -1;

		if (first <= last)
		{
			Sleep(1);
			int mid = (first + last) / 2;

			if (list1[mid] == value)
			{
				answer = mid;
				cout << "value found, the position in the array is" << mid << endl;
				cout << "value found, the value of the array is " << list1[mid] << endl;
			}

			else
				if (list1[mid] > value)

					answer = binarySearch(list1, first, mid - 1, value);


				else answer = binarySearch(list1, mid + 1, last, value);


		}
		else
			answer = -1;

		return answer;

	}

void findAverage(int* list1) {
	int total = 0;
	double average = 0;
	clock_t begin = clock();
	for (i = 0; i < n; i++) { total += list1[i]; Sleep(1); }
	average = total / (float)n;
	clock_t end = clock();
	double elapsed = end - begin;
	cout << "average of the array is " << average << endl;
	cout << "time taken to calculate average is " << elapsed << " milliseconds " << elapsed / 1000 << "seconds" << endl;

}

void main() {
#pragma comment(lib, "winmm.lib")


	cout << "please enter the amount of integers you want to generate " << endl;
	cin >> n;
	clock_t begin1 = clock();
	cout << endl; cout << "generating first array of sorted integers" << endl;
	int* list1 = new int [n];
	for (int i = 0; i < n; i++) {
		list1[i] = i * 3 + 1;
		cout << " " << list1[i];
		Sleep(1);
	}
	clock_t end1 = clock();
	cout << endl; cout << "generating 2nd array of random integers" << endl;
	clock_t begin2 = clock();
	int* list2 = new int[n];
	for (int i = 0; i < n; i++) {
		list2[i] = rand() % 10000;
		cout << " " << list2[i];
		Sleep(1);

}


	clock_t end2 = clock();
	cout << endl;
	double elapsed1 = end1 - begin1;
	double elapsed2 = end1 - begin1;
	cout << "time taken to generate sorted array " << elapsed1 << " milliseconds " << elapsed1 / 1000 << "seconds" << endl;
	cout << "time taken to generate random array " << elapsed2 << " milliseconds " << elapsed2 / 1000 << "seconds" << endl;
	findAverage(list1);

	binarySearch(list1, 0, n-1, -1);


	system("PAUSE");
}