Practika2/Practika/Practika/Form1.cs

using System.Text;
using System.Windows.Forms;

namespace Practika
{
    public partial class Form1 : Form
    {
        private int[] array1;
        private int[,] array2;
        private int Task = 0;
        private int Count = 1;
        private int CountLine = 1;
        private int Array1size = 1;
        private int Min = 0;
        private int Max = 0;

        Random random = new Random();

        public Form1()
        {
            InitializeComponent();
            array1 = new int[Array1size];
            array2 = new int[Count, CountLine];
        }

        private void button1_Click(object sender, EventArgs e)
        {
            textBoxTask.Text = "Äàí öåëî÷èñëåííûé îäíîìåðíûé ìàññèâ N  îïðåäåëèòü  ìàêñèìàëüíîå êîëè÷åñòâî åãî îäèíàêîâûõ ýëåìåíòîâ";
            Task = 1;
            textBoxEnd.Clear();
        }



        private void button7_Click_1(object sender, EventArgs e)
        {

            textBoxMassive.Clear();

            string input = textBoxTake.Text;
            string[] numbers = input.Split(' ');
            Array1size = numbers.Length;
            array1 = new int[Array1size];
            for (int i = 0; i < Array1size; i++)
            {
                if (int.TryParse(numbers[i], out int number))
                {
                    array1[i] = number;
                }
                else
                {
                    MessageBox.Show("Îøèáêà !");
                    return;
                }
            }
            for (int i = 0; i < Array1size; i++)
            {
                textBoxMassive.Text += array1[i].ToString() + " ";
            }



        }

        private void button8_Click_1(object sender, EventArgs e)
        {
            textBoxMassive.Clear();


            string input = textBoxTake.Text;
            string[] rows = input.Split(';');
            CountLine = rows.Length;
            Count = rows[0].Split(' ').Length;
            array2 = new int[CountLine, Count];
            for (int i = 0; i < CountLine; i++)
            {
                string[] numbers = rows[i].Split(' ');

                for (int j = 0; j < Count; j++)
                {
                    if (int.TryParse(numbers[j], out int number))
                    {
                        array2[i, j] = number;
                    }
                    else
                    {
                        MessageBox.Show("Îøèáêà !");
                        return;
                    }
                }
            }
            for (int i = 0; i < CountLine; i++)
            {
                for (int j = 0; j < Count; j++)
                {
                    textBoxMassive.Text += array2[i, j].ToString() + " ";
                }
                textBoxMassive.Text += Environment.NewLine;
            }

        }

        private void button9_Click_1(object sender, EventArgs e)
        {

            textBoxEnd.Clear();
            switch (Task)
            {
                case 1:

                    int Maxx = 0;
                    Dictionary<int, int> c;
                    c = new Dictionary<int, int>();
                    foreach (int i in array1)
                    {
                        if (c.ContainsKey(i))
                        {
                            c[i]++;
                        }
                        else
                        {
                            c[i] = 1;
                        }
                    }
                    Maxx = c.Max(x => x.Value);
                    textBoxEnd.Text += "Màêñèìàëüíîå êîëè÷åñòâî  îäèíàêîâûõ ýëåìåíòîâ " + Maxx.ToString();
                    break;
            }
        }

        private void button10_Click_1(object sender, EventArgs e)
        {
            textBoxMassive.Clear();
            Array1size = Int32.Parse(textBoxNumber.Text);
            array1 = new int[Array1size];
            Min = Int32.Parse(textBoxMin.Text);
            Max = Int32.Parse(textBoxMax.Text);
            for (int i = 0; i < Array1size; i++)
            {
                array1[i] = random.Next(Min, Max);
            }
            textBoxMassive.Text = string.Join(", ", array1);
        }

        private void button11_Click_1(object sender, EventArgs e)
        {
            textBoxMassive.Clear();
            CountLine = Int32.Parse(textBoxNumber.Text);
            Count = Int32.Parse(textBoxNumber.Text);
            Min = Int32.Parse(textBoxMin.Text);
            Max = Int32.Parse(textBoxMax.Text);
            array2 = new int[CountLine * 2, Count];
            for (int i = 0; i < CountLine; i++)
                for (int j = 0; j < Count; j++)
                    array2[i, j] = random.Next(Min, Max);
            StringBuilder sb = new StringBuilder();
            for (int i = 0; i < CountLine; i++)
            {
                for (int j = 0; j < Count; j++)
                {
                    sb.Append(array2[i, j].ToString() + ", ");
                }
                sb.AppendLine();
            }
            for (int i = 0; i < CountLine; i++)
            {
                for (int j = 0; j < Count; j++)
                {
                    textBoxMassive.Text += array2[i, j].ToString() + " ";
                }
                textBoxMassive.Text += Environment.NewLine;
            }
        }

        private void label2_Click(object sender, EventArgs e)
        {

        }
    }

}