//BestFit Decreasing Algorithm Using Linear Search Button
        private void button8_Click(object sender, EventArgs e)
        {
            if (InputFolder == null)
            {
                button1.Focus();
                errorProvider1.SetError(textBox1, "Please Choose Input Path");
            }
            else if (OutputFolder == null)
            {
                button2.Focus();
                errorProvider1.SetError(textBox2, "Please Choose Input Path");
            }
            else if (textBox3 == null)
            {
                textBox3.Focus();
                errorProvider1.SetError(textBox3, "Please Enter Folder Capacity");
            }
            else
            {
                List <Sound> BestFitDec = new List <Sound>(sounds);
                MergeSortSounds(BestFitDec, 0, BestFitDec.Count - 1);
                //Displaying Sounds after sorting them in descending order

                /*for (int i = 0; i < BestFitDec.Count; i++)
                 * {
                 *  MessageBox.Show(BestFitDec[i].GetName() + " -- " + BestFitDec[i].GetSeconds().ToString());
                 * }
                 */
                string BestFitDecDir = OutputFolder + @"\[8] BesttFit Decreasing (L-S)";

                if (Directory.Exists(BestFitDecDir))
                {
                    Directory.Delete(BestFitDecDir, true);
                }

                timer1.Start();
                Directory.CreateDirectory(BestFitDecDir);
                List <Folder> folders = new List <Folder>();
                Folder        f       = new Folder("F1", BestFitDecDir + @"\", MaxFolerSeconds);
                folders.Add(f);
                folders[0].FolderSounds.Add(BestFitDec[0]);
                folders[0].SecondsCapacity = folders[0].SecondsCapacity - BestFitDec[0].GetSeconds();

                for (int i = 1; i < BestFitDec.Count; i++)
                {
                    int    index = -1;
                    double c     = 1000000;
                    for (int j = 0; j < folders.Count; j++)
                    {
                        if (BestFitDec[i].GetSeconds() <= folders[j].SecondsCapacity && folders[j].SecondsCapacity <= c)
                        {
                            index = j;
                            c     = folders[j].SecondsCapacity;
                        }
                    }
                    if (index > -1)
                    {
                        folders[index].FolderSounds.Add(BestFitDec[i]);
                        folders[index].SecondsCapacity = folders[index].SecondsCapacity - BestFitDec[i].GetSeconds();
                    }

                    else
                    {
                        Folder s = new Folder("F" + (folders.Count + 1).ToString(), BestFitDecDir + @"\", MaxFolerSeconds);
                        folders.Add(s);
                        folders[folders.Count - 1].FolderSounds.Add(BestFitDec[i]);
                        folders[folders.Count - 1].SecondsCapacity = folders[folders.Count - 1].SecondsCapacity - BestFitDec[i].GetSeconds();
                    }
                }

                //Display the folders names and the count of stored seconds after filling them
                for (int i = 0; i < folders.Count; i++)
                {
                    folders[i].writing(InputFolder, MaxFolerSeconds);
                    //MessageBox.Show(folders[i].GetFolderName() + " -- " + TimeSpan.FromSeconds(MaxFolerSeconds - folders[i].SecondsCapacity).Duration().ToString());
                }

                timer1.Stop();
                label13.Text = TimeSpan.FromSeconds(time).Duration().ToString();
                time         = 0;
                MessageBox.Show("BestFit Decreasing Algorithm\nUsing Linear Search\nIs Done", "Congratulations!", MessageBoxButtons.OK, MessageBoxIcon.Asterisk);
            }
        }
        //WorstFit Decreasing Algorithm Using Linear Search Button
        private void button5_Click(object sender, EventArgs e)
        {
            if (InputFolder == null)
            {
                button1.Focus();
                errorProvider1.SetError(textBox1, "Please Choose Input Path");
            }
            else if (OutputFolder == null)
            {
                button2.Focus();
                errorProvider1.SetError(textBox2, "Please Choose Input Path");
            }
            else if (textBox3 == null)
            {
                textBox3.Focus();
                errorProvider1.SetError(textBox3, "Please Enter Folder Capacity");
            }
            else
            {
                List <Sound> WorstFitDec = new List <Sound>(sounds);    //O(1)

                MergeSortSounds(WorstFitDec, 0, WorstFitDec.Count - 1); //mergesort O(nlogn)
                //Displaying Sounds after sorting them in descending order                for (int i = 0; i < WorstFitDec.Count; i++)

                /* for (int i = 0; i < WorstFitDec.Count; i++)
                 * {
                 *   MessageBox.Show(WorstFitDec[i].GetName() + " -- " + WorstFitDec[i].GetSeconds().ToString());
                 * }
                 */

                string WorstFitDecDir = OutputFolder + @"\[3] WorstFit Decreasing (L-S)"; //O(1)

                if (Directory.Exists(WorstFitDecDir))                                     //O(1)
                {
                    Directory.Delete(WorstFitDecDir, true);                               //O(1)
                }

                timer1.Start();
                Directory.CreateDirectory(WorstFitDecDir);                                                                //O(1)
                List <Folder> folders = new List <Folder>();                                                              //O(1)
                Folder        f       = new Folder("F1", WorstFitDecDir + @"\", MaxFolerSeconds);                         //O(1)
                folders.Add(f);                                                                                           //O(1)
                folders[0].FolderSounds.Add(WorstFitDec[0]);                                                              //O(1)
                folders[0].SecondsCapacity = folders[0].SecondsCapacity - WorstFitDec[0].GetSeconds();                    //O(1)

                for (int i = 1; i < WorstFitDec.Count; i++)                                                               //O(n)*(entire)=O(n*m) n: number of sounds, m=number of folders
                {
                    int    index = -1;                                                                                    //O(1*n)
                    double c     = 0;                                                                                     //O(1*n)
                    for (int j = 0; j < folders.Count; j++)                                                               //O(m*n)
                    {
                        if (WorstFitDec[i].GetSeconds() <= folders[j].SecondsCapacity && folders[j].SecondsCapacity >= c) //O(1*m*n)
                        {
                            index = j;                                                                                    //O(1*1*1m*n)
                            c     = folders[j].SecondsCapacity;                                                           //O(1*1*m*n)
                        }
                    }
                    if (index > -1)                                                                                    //O(1*n)
                    {
                        folders[index].FolderSounds.Add(WorstFitDec[i]);                                               //O(1*1*n)
                        folders[index].SecondsCapacity = folders[index].SecondsCapacity - WorstFitDec[i].GetSeconds(); //O(1*1*n)
                    }

                    else
                    {
                        Folder s = new Folder("F" + (folders.Count + 1).ToString(), WorstFitDecDir + @"\", MaxFolerSeconds);                   //O(1*n)
                        folders.Add(s);                                                                                                        //O(1*n)
                        folders[folders.Count - 1].FolderSounds.Add(WorstFitDec[i]);                                                           //O(1*n)
                        folders[folders.Count - 1].SecondsCapacity = folders[folders.Count - 1].SecondsCapacity - WorstFitDec[i].GetSeconds(); //O(1*n)
                    }
                }

                //Display the folders names and the count of stored seconds after filling them
                for (int i = 0; i < folders.Count; i++)               //O(n)*(entire)=O(n*m)
                {
                    folders[i].writing(InputFolder, MaxFolerSeconds); //this function is O(m)*O(n), =number of sounds in the folder
                    // MessageBox.Show(folders[i].GetFolderName() + " -- " + TimeSpan.FromSeconds(MaxFolerSeconds - folders[i].SecondsCapacity).Duration().ToString());
                }

                timer1.Stop();
                label9.Text = TimeSpan.FromSeconds(time).Duration().ToString();
                time        = 0;
                MessageBox.Show("WorstFit Decreasing Algorithm\nUsing Linear Search\nIs Done", "Congratulations!", MessageBoxButtons.OK, MessageBoxIcon.Asterisk);
            }
        }