int []ovrallavg = new int [10];
for (int i = 0; i<10;i++){
ovrallavg [i] = ((Array [i][1]+ Array [i][2]+Array [i][3]+ Array [i][4])/4);
Arrays.sort (ovrallavg);
System.out.println(ovrallavg);
}

import java.util.Scanner;
import java.io.*;
import java.util.Arrays;
import java.text.DecimalFormat;

public class Java58 {

/**
*
*/
/**
* @author
*
*/
public static void main(String[] args) {
// TODO Auto-generated method stub
// 2007/06/11
// Markbook 1992
// This program is an interactive markbook where user has various options.


Scanner in= new Scanner (System.in);

boolean program = false;
int reply=0;
int index;
int stdntavg;
double mean=0;
int [][] Array = new int [10][5];
for (int i = 0; i<Array.length;i++){
for (int j = 0; j<Array[0].length;j++){
Array [i][j]=-1;
}
}

System.out.println("\n\n\n\n\n\n\n\n\n\n\n\n\n\t\t\t\t\t\t\tAsylum Software Presents...");
System.out.print("\t\t\t\t\t\t\t\tMarbook 1992\n");
try {
Thread.sleep(3000); // Wait 5 seconds
} catch (InterruptedException e) {

}
int a = 0;
for(a=0;a<25;a++)
System.out.println("\n");

System.out.print("Note: All students are assigned a -1 by default.\n\n");

try {
Thread.sleep(3000); // Wait 5 seconds
} catch (InterruptedException e) {

}
int x = 0;
for(x=0;x<25;x++)
System.out.println("\n");

while (program==false)
System.out.println ("\nASYLUMSOFTWARE.:.ASYLUMSOFTWARE.:.ASYLUMSOFTWARE.:.ASYLUMSOFTWARE.:.ASYLUMSOFTWARE.:.ASYLUMSOFTWARE.:.ASYLUMSOFTWARE.:.ASYLUMSOFTWARE.:.ASYLUMSOFTWARE.:." );
System.out.print("\nPlease choose one of the following 7 options: ");
System.out.println ("\n 1 - Enter marks for a student." );
System.out.println (" 2 - Display overall average of specific student.");
System.out.println (" 3 - Display marks in order of student index.");
System.out.println (" 4 - Display the average of the students' averages. [Lowest to Highest].");
System.out.println (" 5 - Display the mean of the students' overall averages.");
System.out.println (" 6 - Display the median of students' overall averages.");
System.out.println (" 7 - EXIT");
reply = in.nextInt();
switch (reply){
case 1:
System.out.println ("Enter index of student: ");
index = in.nextInt();
System.out.println ("Enter first mark: ");
Array [index][1]= in.nextInt ();
System.out.println ("Enter second mark: ");
Array [index][2]= in.nextInt ();
System.out.println ("Enter third mark: ");
Array [index][3]= in.nextInt ();
System.out.println ("Enter fourth mark: ");
Array [index][4]= in.nextInt ();
break;
case 2:
System.out.println ("Enter student index for corresponding average: ");
index = in.nextInt();
stdntavg = ((Array [index][1] + Array [index][2] + Array [index][3] + Array [index][4])/4);
if (stdntavg==-1);
System.out.println ("No marks have been entered for this student. Default average is -1.");
System.out.println(stdntavg);
break;
case 3:
for (int i = 0; i<10;i++){
System.out.println(i + " " + ((Array [i][1]+ Array [i][2]+Array [i][3]+ Array [i][4])/4));
}
break;
case 4:
int []overallavg = new int [10];
for (int i = 0; i<10;i++){
overallavg [i] = ((Array [i][1]+ Array [i][2]+Array [i][3]+ Array [i][4])/4);
Arrays.sort (overallavg);
System.out.println(overallavg [i]);

}
break;
case 5:
int[] meanavg = new int [10];
for (int i = 0; i<10;i++){
meanavg[i] = (Array [i][1]+ Array [i][2]+Array [i][3]+ Array [i][4])/4;
}
for (int i = 0; i<10;i++){
mean = mean + meanavg [i];
}
mean = mean/10;
mean = mean*100;
mean = (int)mean;
mean = mean/100;
System.out.println (mean);
break;
case 6:
int[] medavg = new int [10];
for (int i = 0; i<medavg.length;i++){
medavg[i] = (Array [i][1] + Array [i][2] + Array [i][3] + Array [i][4])/4;
}
Arrays.sort (medavg);
int middle = medavg.length/2;
if (medavg.length%2 == 1)
// Odd number of elements -- return the middle one.
System.out.println (medavg[middle]);
else
// Even number -- return average of middle two
System.out.println ((medavg[middle-1] + medavg[middle]) / 2.0);
break;
case 7: program = true;
System.out.println("\n\n\n\n\n\n\n\n\n\n\n\n\n\t\t\t\t\t\tASYLUM SOFTWARE COPYRIGHT 2007(1992). ALL RIGHTS RESERVED.");
System.out.print("\t\t\t\t\t\t\t\tPROGRAM TERMINATED.");
break;
}
}
}

case 4:
int []overallavg = new int [10];
for (int i = 0; i<overallavg.length;i++){
overallavg [i] = ((Array [i][1]+ Array [i][2]+Array [i][3]+ Array [i][4])/4);
Arrays.sort (overallavg);
for ( int j = 0; i < 10; i++ ) {
System.out.println(" " + overallavg[i]);
}
}
break;