//
//		page 137
//		ADT - Lists: array of items with variable length
//		read the strings from a file and put them in the list; 
//		then output the strings

#include <iostream>
using namespace std;

const int MAX = 50;

class List
{
	int data[MAX];
	int length;
public:
	List() { length = 0;   }
	int Length() const
	{	return length;	}
	void Insert(int item)
	{	data[length] = item;
		length ++;
	}
	void Print() const
	{	for(int i=0; i<length; i++)
			cout << data[i] << " ";
		cout << "\n";
	}
	// sequential search, p.139
	bool IsPresent(int item) const
	{	bool found = false;
		for(int i=0; i<length && !found; i++)
			if(data[i] == item) found = true;
		return found;
	}
	void SelectionSort()	// p.140 - ascending oder
	{	int temp;
		int passCount;
		int minIndex;
		for(passCount=0; passCount<length-1; passCount++)
		{	minIndex = passCount;
			for(int k=passCount+1; k<length; k++)
			{	if( data[minIndex] > data[k] )	minIndex = k;	
}
			temp = data[minIndex];	// swap
			data[minIndex] = data[passCount];
			data[passCount] = temp;
		}
	}
	void SelectionSort_R()	// descending
	{ 	int temp;
                int passCount;
                int maxIndex;
                for(passCount=0; passCount<length-1; passCount++)
                {       maxIndex = passCount;
                        for(int k=passCount+1; k<length; k++)
                        {       if( data[maxIndex] < data[k] )  maxIndex = k;   
}
                        temp = data[maxIndex];  // swap
                        data[maxIndex] = data[passCount];
                        data[passCount] = temp;
                }
        }
};

int main()
{
	List real;
	char op;
	int item;
	

	cout << " 	List Operations\n";
	cout << " ========================\n";
	cout << "I	Insert an item.\n";
	cout << "A	Ascending order.\n";
	cout << "Q	Quit.\n";
	cout << " ========================\n";
	cout << " Your option is: ";
	cin >> op;

	while(toupper(op) != 'Q')
	{

		if (toupper(op) == 'I')
		{	cout << "Input te item: ";
			cin >> item;
			real.Insert(item);
			cout << "The list is ";
			real.Print();
		}		
		else if(toupper(op) == 'A')
		{	real.SelectionSort();
			cout << "The list is ";
			real.Print();
		}

        	cout << "       List Operations\n";
        	cout << " ========================\n";
       		cout << "I      Insert an item.\n";
        	cout << "A      Ascending order.\n";
        	cout << "Q      Quit.\n";
        	cout << " ========================\n";
        	cout << " Your option is: ";
        	cin >> op;
                        
	}
	
		
	return 0;
}