using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;

namespace quicksort_test
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }

        int r = 20;
        int[] container = new int[20];

        private void button1_Click(object sender, EventArgs e)
        {
            listBox1.Items.Clear();

            for (int i = 0; i < r; i++)
            {
                listBox1.Items.Add(Modnar.willekeurig());
            }
        }

        private void button2_Click(object sender, EventArgs e)
        {



            // the items in array container will be divided in two arrays,
            // and in those arrays they will be divided again in two arrays

            int[] klein;
            int[] groot;
            int kk = 0;





            container = new int[listBox1.Items.Count];

            for (int i = 0; i < container.Length; i++)
            {
                container[i] = Convert.ToInt32(listBox1.Items[i]);
            }
            int gemiddelde = container.Sum() / container.Length;
            for (int j = 0; j < container.Length; j++)
            {
                if (container[j] < gemiddelde)
                {
                    kk++;


                }


            }
            klein = new int[kk];
            groot = new int[container.Length - kk];



        }


    }
}




using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;

namespace quicksort_test
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }

        int r = 20;
        int[] container = new int[20];

        private void button1_Click(object sender, EventArgs e)
        {
            listBox1.Items.Clear();
            for (int i = 0; i < r; i++)
            {
                listBox1.Items.Add(Modnar.willekeurig()); //Add random to listbox
                container[i] = Convert.ToInt32(listBox1.Items[i]);//Imidiatly put them in array
            }
        }
        private void button2_Click(object sender, EventArgs e)
        {
            int[] klein; // the items in array container will be divided in two arrays,
            int[] groot;
            int kk = 0;
            int gemiddelde = container.Sum() / container.Length;
            for (int j = 0; j < container.Length; j++)
            {
                if (container[j] < gemiddelde)
                {
                    kk++;
                }
            } // and in those arrays they will be divided again in two arrays
            klein = new int[kk];
            groot = new int[container.Length - kk];
        }
    }
}