FINDING MEDIAN FOR AN ARRAY OF INTS WITH EVEN NUMBER OF VALUES

Question

okie dokie fellas i know this has got to be easy but i hjave been sittin at my comp forever workin on projects that are due and my head isn't all there anymore...could someone please clue me in on how im supposed to write the logic to find the median of an array of integers if the array contains an even number of values...I know I have to average the 2 values on either side but i cant figure it out at all...sorry i know its dumb but thnaks to anyone who helps
package pgm3deClercqMatt;
* @author Owner
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import java.sql.*;
import javax.swing.*;
import java.awt.*;
import java.util.*;
import java.text.*;
public class ExamStatistics
     public static void main(String[] args)
          DbConnection db = new DbConnection("pgm3");
          boolean moreRecords;
          String query = "SELECT * FROM pgm3Data ORDER BY ExamGrade";
          ResultSet rs = db.processQuery(query);
          int nbrGrades = 0;
          ResultSetMetaData rsmd = null;
          try
               rsmd = rs.getMetaData();
          catch(SQLException sqlex)
               JOptionPane.showMessageDialog(null, "SQLException getting ResultSet data or metadata");
               System.exit(0);
          int s[] = new int[200];
          DecimalFormat decimal = new DecimalFormat("#,##0.00");
          int n = 0, aboveNinety = 0, numberAboveNinety = 0;
          double sum = 0, avgGrade = 0, medianGrade = 0;
          try
               moreRecords = rs.next();
               if(!moreRecords)
                    JOptionPane.showMessageDialog(null, "pgm3Data Result Set is Empty.");
                    System.exit(0);
               while(moreRecords)
                    s[n] = rs.getInt(1);
                    n++;
                    moreRecords = rs.next();
               }// end of while loop
               System.out.println("n = " + n);
               System.out.println("s[0]= " + s[0]);
               System.out.println("s[n-1]= " + s[n-1]);
               //FIND AVERAGE OF ARRAY
               for(int j=0; j<n; ++j)
                    sum += s[j];
                    avgGrade = sum/n;
               //FIND NUMBER OF GRADES ABOVE OR EQUAL TO 90
               for(int j=0; j<n; ++j)
                    if(s[j]>=90)
                         numberAboveNinety++;
               //FIND MEDIAN EXAM GRADE
               for(int j=0; j<n ; ++j)
                    if(Math.abs(medianGrade - Math.floor(medianGrade))<1.e-10)
                          medianGrade = s[(j+1)/2];
                    else
                         medianGrade =    <HERE IS WHERE THE PROB IS
          }// end of try block
          catch(SQLException sqlex)
               JOptionPane.showMessageDialog(null, " SQLException getting ResultSet data or metadata");
               System.exit(0);
          String output = "";
          output = "Number of Exam Grades: " + n;
          output += "\nHighest Exam Grade: " + maxOfArray(s, n) + "\nLowest Exam Grade: " + minOfArray(s, n)
                    + "\nAverage Grade: " + decimal.format(avgGrade) + "\nNumber of exam grades above 90: "
                    + numberAboveNinety + "\nMedian Exam Grade: " + medianGrade;
          JOptionPane.showMessageDialog(null, output);
          System.exit(0);
     }// end of main
     static int maxOfArray(int z[], int n)
          int j, max = z[0];
          for(j=1; j<n; ++j)
               if(z[j]>max)
                    max = z[j];     
          return max;
     static int minOfArray(int z[], int n)
          int j, min = z[0];
          for(j=1; j<n; ++j)
               if(z[j]<min)
                    min = z[j];     
          return min;
}// end of ExamStatistics
class DbConnection
     //     class DbConnection creates and manages the db connection,
     //     processes queries, and returns result sets for processing
     private Connection connection = null;
     private String url="jdbc:odbc:";
     private Statement statement;
     private String username = "";
     private String password = "";
     private ResultSet rs;
     private int nbrResultSets = 0;
     //     Constructor Argument is the registered name of the database
     DbConnection(String dbName)
          try
          {// load driver to allow connection to database
               Class.forName("sun.jdbc.odbc.JdbcOdbcDriver");
               connection = DriverManager.getConnection ((url+dbName), username, password );
          catch (ClassNotFoundException cnfex)
               fatalError("ClassNotFoundException on connection attempt");
               System.exit(0);
          catch (SQLException sqlex )
               fatalError("SQLException -- Unable to Connect to db");
               System.exit(0);
     } // end of constructor
     ResultSet processQuery(String query)
     //     process a single SQL query and return the resulting data set
          rs = null;
          try
               statement = connection.createStatement();
               rs = statement.executeQuery(query);
          catch (SQLException sqlex)
               fatalError("SQLException on query or processing");
          return rs;
     void endConnection()
          try
               connection.close();
          catch (SQLException e)
               fatalError("SQLException on attempt to close connection");
     //     simple local fatal error handler
     private void fatalError(String msg)
          JOptionPane.showMessageDialog(null,msg);
          System.exit(0);
} // end of class DbConnection

Answer 1

sorry to anyone who thinks what i'm doing is a joke
first of all i'm a student and secondly i'm taking
java in a summer session so things don't get
explained as well as they should. And how is this our problem?
I'm doing the best
i can. The for loop was because the array that I
defined to hold 200 values was being filled by a
database with a supposed unknown number of values but
less than 200 so i waslooping through to get each
value and put it in order and the conditional
statement was supposed to test to see if the incoming
median was an integer and was in the final write-up
put into it's own boolean method returning false if
there was no median and you needed to take the
average of the next lowest and highest values. BThere's always a median. The definition I sent you tells you what it is.
But
thnak you very much to the people that actually help
on here and don't try to bash people who have put
effort into writing their code, however shitty it may
look to them. You can't control what people say about your stuff. Everyone who criticizes your work isn't making a personal attack. They're telling you something that you should be learning from. Your problem is that you can't separate yourself from your work.
No one knows absolutely everything and
people who decide to talk down on others when they
are using this forum as a last resort need to grow
up.Grow up? That's what you need to do. If you think for a moment that you'll never be criticized once you leave that ivory tower you're sadly mistaken. You need to figure out how to separate yourself from your code.
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