C# Simple app

[NotCoolNick]

Hello, I have the following problem:

"Create an app that filter rooms and pick the ones that fit the required number of participants.
As a result, the app should return the list of available slots for each of the rooms.
Constraints: a slot start at every 15th ( 0, 15, 30, 45).
Example: room is available between 10:00-17:00 and taken between 11:00-11:30 and 12:30-17:00, meeting is 30min long
the app returns 10:00-10:30, 10:30-11:00, 11:30-12:00, 12:00-12:30 as free spots."

It could be solved on JS, Java, etc., I'm solving in c#. I will appreciate tips on how to approach the problem.

 

[Regy]

Better late than never, I guess....

Here's what I came up with and.... I think it solves the problem? I'm 99% confident that it does, but perhaps I'm being too optimistic.

I am however 100% confident that a better programmer could have done a better job. 🙂

Room 1 = 1 - 5 people.
Room 2 = 1 - 10 people.

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

private void Form1_Load(object sender, EventArgs e)
{
int x;
int y;
    for (x = 1; x < 11; x++)
    {
        if (x == 1)
        {
        listBox1.Items.Add (x + " person");
        }
        else
        {
        listBox1.Items.Add (x + " people");
        }
    }
    string a;
    string b;
    int arraynumber = 0;
    int addtime = 10;
    for (x = 1; x < 3; x++)
    {
        for (y = 1; y < 3; y++)
        {
            if (y == 1)
            {
            a = ".00";
            b = ".30";
            globals.thetimes[arraynumber] = addtime + a + " - " + addtime + b;
            }
            else if (y == 2)
            {
            a = ".30";
            b = ".00";
            globals.thetimes[arraynumber] = addtime + a + " - " + (addtime + 1) + b;
            }
        arraynumber = arraynumber + 1;
        }
    addtime = addtime + 1;
    }
label4.Text = "Bookings" + "\n";
}

private void listBox1_SelectedIndexChanged(object sender, EventArgs e)
{
int x;
listBox2.Items.Clear();
listBox3.Items.Clear();
    if (listBox1.SelectedIndex < 5)
    {
        for (x = 1; x < 5; x++)
        {
            if (globals.roomtime1[x - 1] == "")
            {
                listBox2.Items.Add(globals.thetimes[x - 1]);
            }
            if (globals.roomtime2[x - 1] == "")
            {
                listBox3.Items.Add(globals.thetimes[x - 1]);
            }
        }
    }
    else if (listBox1.SelectedIndex > 4)
    {
        for (x = 1; x < 5; x++)
        {
            if (globals.roomtime2[x - 1] == "")
            {
                listBox3.Items.Add(globals.thetimes[x - 1]);
            }
        }
    }
}

private void button1_Click(object sender, EventArgs e)
{
int x;
    if (listBox1.SelectedIndex == -1)
    {
    MessageBox.Show ("Please select the number of people.");
    return;
    }
    if (listBox1.SelectedIndex > -1 && listBox1.SelectedIndex < 5)
    {
        if (listBox2.SelectedIndex == -1 && listBox3.SelectedIndex == -1)
        {
        MessageBox.Show ("Please select either Room 1 or Room 2's time.");
        return;
        }
        if (listBox2.SelectedIndex > -1 && listBox3.SelectedIndex > -1)
        {
        MessageBox.Show ("Please select either Room 1 or Room 2's time.");
        listBox2.SelectedIndex = -1;
        listBox3.SelectedIndex = -1;
        return;
        }
        if (listBox2.SelectedIndex > -1)
        {
            for (x = 1; x < 5; x++)
            {
                if (listBox2.SelectedItem == globals.thetimes[x - 1])
                {
                globals.roomtime1[x - 1] = globals.thetimes[x - 1];
                label4.Text = label4.Text  + "\n" + listBox1.SelectedItem + " --- Room 1 - " + globals.roomtime1[x - 1];
                }
            }
        globals.total = globals.total + 1;
        }
        else if (listBox3.SelectedIndex > -1)
        {
            for (x = 1; x < 5; x++)
            {
                if (listBox3.SelectedItem == globals.thetimes[x - 1])
                {
                globals.roomtime2[x - 1] = globals.thetimes[x - 1];
                label4.Text = label4.Text  + "\n" + listBox1.SelectedItem + " --- Room 2 - " + globals.roomtime2[x - 1];
                }
            }
        globals.total = globals.total + 1;
        }
    }
    else if (listBox1.SelectedIndex > 4 && listBox1.SelectedIndex < 10)
    {
        if (listBox3.SelectedIndex == -1)
        {
        MessageBox.Show ("Please select Room 2's time.");
        return;
        }
        for (x = 1; x < 5; x++)
        {
            if (listBox3.SelectedItem == globals.thetimes[x - 1])
            {
            globals.roomtime2[x - 1] = globals.thetimes[x - 1];
            label4.Text = label4.Text  + "\n" + listBox1.SelectedItem + " --- Room 2 - " + globals.roomtime2[x - 1];
            }
        }
    globals.total = globals.total + 1;
    }
    if (globals.total == 8)
    {
    listBox1.Items.Clear();
    listBox1.Enabled = false;
    listBox2.Enabled = false;
    listBox3.Enabled = false;
    button1.Enabled = false;
    label4.Text = label4.Text + "\n\n" + "No more rooms available.";
    }
listBox1.SelectedIndex = -1;
listBox2.Items.Clear();
listBox3.Items.Clear();
}

}

static class globals
{
public static string[] thetimes = {"", "", "", ""};
public static string[] roomtime1 = {"", "", "", ""};
public static string[] roomtime2 = {"", "", "", ""};
public static int total = 0;
}

}