Java Array Standard Deviation and Median

Question

Need to add Median and Standard Deviation to the following program, but I have no idea where to start, I know what I want it to do but am not sure how to make it happen especially since the median has to come after the sorted numbers but if I put it in as void Median (), I loose the sorted array. Please help! Any assistance is much appreciated:

import java.util.Scanner;
import javax.swing.*;
public class JScannerO
{
    public JScannerO(){}
    public JScannerO(int A)
    {
        HowMuch = A;
    }
    void GenerateNumbers()
    {
        int k,Hide;
        k = 0;
        while ( k < HowMuch )
        {
            Hide = (int) (Math.random() * 100);
            if ( Hide > 9 && Hide < 100 )
            {
                Hanson[k] = Hide;
                k++;
            }
        }
    }
    void DisplayNumbers()
    {
        int k;
        for ( k = 0; k < HowMuch; k++)
        {
            System.out.println("\t\tThe numbers are : " + Hanson[k]);
        }
    }
    void BiggestNumber()
    {
        int k,Biggest;
        Biggest = Hanson[0];
        for ( k = 0; k < HowMuch; k++)
        {
            if ( Biggest < Hanson[k] ) Biggest = Hanson[k];
        }
        System.out.println("\n\n\t\tThe biggest number is : " + Biggest);
    }
    void SmallestNumber()
    {
        int k,Smallest;
        Smallest = Hanson[0];
        for ( k = 0; k < HowMuch; k++)
        {
            if ( Smallest > Hanson[k] ) Smallest = Hanson[k];
        }
        System.out.println("\n\n\t\tThe Smallest number is : " + Smallest);
    }
    void Average()
    {
        int k,Sum;
        double Average;
        Sum = 0;
        for ( k = 0; k < HowMuch; k++)
        {
            Sum = Sum + Hanson[k];
        }
        Average = 1.0 * Sum / HowMuch;
        System.out.format("\n\n\t\tThe Average number is : %7.2f",Average);
    }
    void Sort()
    {
        int k,Hide;
        boolean DidISwap;
        DidISwap = true;
        while (DidISwap)
        {
            DidISwap = false;
            for ( k = 0; k < HowMuch - 1; k++)
            {
                if ( Hanson[k] > Hanson[k+1] )
                {
                    Hide = Hanson[k ];
                    Hanson[k] = Hanson[k+1];
                    Hanson[k+1] = Hide ;
                    DidISwap = true;
                }
            }
        }
        System.out.println("\n\n\n\t\tThe Sorted Numbers : \n");
    }
    private int HowMuch;
    private int[] Hanson = new int[100];
}

This is run by using a calling program

Answer 1

I don't understand your question.

You have a sorting algorithm there that does the work for you!

Can't you just write a

public int median() { 
  Sort();
  return Hanson[Math.floor(Hanson/2)]; 
}

?

This will cost you O(N) instead of O(1), but it is not error-prone and does what you need to do - especially since your "Hanson" array has only size 100 so we can just not care at this point.

As a final remark: function names are ALWAYS in lower camelCase, ie it's sort() and not Sort(), and it's calculateSomething() and not Calculate_Something() or any other variant.

There are kind of no exceptions to this rule, and that will make your code (much) more readable. Consider installing CheckStyle in Eclipse (http://eclipse-cs.sourceforge.net/) in order to have an interactive guide to style when you are writing :-)