import java.util.Scanner;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.io.FileWriter;





/**
 * Assignment #2</p>
 * @author Swattw</p>
 * Student ID: 403620022</p>
 * Description: This program can calculate score.</p>
 * Time Spent: 180 minutes.</p> *
 *
 */

public class scorecal {

	/**
	 * Collect the data and output the resluts.
	 * @param args the main program
	 * @param i as the length of array
	 */
	public static void main(String[] args)
	{
		//

		int a[]=new int[1024];
		//Declare the new array within 1024 numbers for unknown data.
		int i;
		Scanner input =new Scanner(System.in);
		System.out.println("Please enter the scores:");

	    for( i = 0; i < 1023; i++)
	    {
	    	int c = input.nextInt();
	    	if (c==-1)
	    	{

	    		// as the request. when the program find "-1" than don't put it in the array and stop collecting numbers.
	    		break;
	    	}
	  		a[i] = c;
	  			// collect the value of the scores which user inputs.

	   	}


	    input.close();
	    int result1 = minScore(a,i);
	    // collect the minscore which found in the method.
	    int result2 = maxScore(a,i);
	    // collect the maxscore which found in the method.
	    int result3 = avgScore(a,i);
	    // collect the avgscore which calculated in the method.
	    int result4 = numOfNinety(a,i);
	    // collect the numOfNinety which counted in the method.
	    boolean result5 = improve(a,i);
	    // collect the boolean value which tested in the method.


	    System.out.println("The min score is:"+result1);
	    System.out.println("The max score is:"+result2);
	    System.out.println("The avg score is:"+result3);
	    System.out.println("The number of score 90 is:"+result4);
	    if (result5==true )
	    {
	    	System.out.println("Scores improving!");
	    }
	    if (result5==false)
	    {
	    	System.out.println("Scores NOT improving!");
	    }



	}
	/**
	 Find the minimal score in the array.
	 @param a[] is the value of the array
	 @param i is the length of the array
	 @return the minScore of the array
	 */
	public static int  minScore(int a[], int i)

	{
		int minScore=a[0];
		for (int j=1; j<i;j++)
		{
			if (a[j]<minScore)

			{

				minScore = a[j];
			}

		}



		return minScore;

	}
	/**
	 Find the maximal score in the array.
	 @param a[] is the value of the array
	 @param i is the length of the array
	 @return the maxScore of the array
	 */
	public static int  maxScore(int a[], int i)
	{
		int maxScore=a[0];
		for (int j=1; j<i;j++)
		{
			if (a[j]>maxScore)

			{

				maxScore = a[j];
			}

		}

		return maxScore;

	}
	/**
	 Calculate the average score in the array.
	 @param int is the value of the array
	 @param int is the length of the array
	 @return the average of the array
	 */
	public static int avgScore(int a[], int i)
	{
		int avgScore=a[0];
		int sum=0;
		for (int j=0; j<=i;j++)
		{

				sum+=a[j];
				avgScore = sum/i;
				if (sum%i !=0)
				{
					avgScore ++;
				}

		}
		return avgScore;

	}
	/**
	 Find the numbers of score over 90 in the array.
	 @param a[] is the value of the array
	 @param i is the length of the array
	 @return the numOfNinety of the array
	 */
	public static int  numOfNinety(int a[], int i)
	{

		int numOfNinety = 0 ;
		for (int j=0;j<i;j++)

			if (a[j]>=90)
			{
				numOfNinety++;

			}

		return numOfNinety;

	}
	/**
	 Test if the score is improving.
	 @param a[] is the value of the array
	 @param i is the length of the array
	 @return the improve boolean of the array
	 */
	public static boolean improve (int a[], int i)
	{

		boolean improve = false;
		for (int j=1;j<i;j++)
		{

				if (a[j-1]<a[j])
				{
					improve = true;

				}
				if (a[j-1]>=a[j])
				{
					improve = false;
					break;
				}

		}

		return improve;

	}



}