package standarinputIO;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.ArrayList;

/**
 *
 * @author anasf
 */
public class StandardInputIO {

    	final static String endstr="000000"; //this variable ends the process
	static String AM="[0-9]{6}";
	static float average=0;
	static ArrayList<String> students = new ArrayList<String>();
	static int count=0;
	static String str;
	static boolean flag=true;
	static int size=0;
	static String temp;
	static String[] data;
        
    public static void main(String[] args) throws IOException {
                System.out.println("Give students ID and the grades in this way.Spacifically 'AM course1 grade1 course2 grade2... and press ENTER'");
		System.out.println("To end the process type-> 000000 and press ENTER");
		BufferedReader input = new BufferedReader(new InputStreamReader(System.in));
	 
	        // Reading data using readLine
		while(flag) {
			str=input.readLine();
			if(!str.startsWith(endstr)) {
				students.add(str);
				size++;
			}
			else {
				flag=false;
			}
		}
		
		System.out.println("The process of reading students' data finished");
		System.out.println("The calculation of average will start!");
		
		for(int i=0;i<size;i++) {
			temp=students.get(i);
			data=temp.split("[ \t]");
			 
		         for(int j=2;j<data.length;j=j+2)
		          {
					// calculate the average
					average=average+Float.parseFloat(data[j]); 
					count++;
				  }
		         average=average/count;
		         System.out.println("Average of student "+data[0]+": "+average);
		         average=0;
		         count=0;

		}
		
		System.out.println("Reading of grades was completed successfully!"); 
    }
    
}