using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Threading;

namespace OperationsMatrix
{
    public class Matrix
    {
        private int[,] grid;
        private int countRow;
        private int countCol;

        public static Matrix SetColAndRow(int countRows, int countCols)
        {
            return new Matrix(countRows, countCols);
        }

        private Matrix(int countRows, int countCols)
        {
            this.grid = new int[countRows, countCols];

            this.countRow = countRows;
            this.countCol = countCols;
        }

        public void FillRandomNumber(int min, int max)
        {
            // Небольшая задержка, чтобы гарантировать уникальность создаваемых чисел
            Thread.Sleep(150);

            Random randNumber = new Random();

            for (int i = 0; i < this.countRow; i++)
            for (int j = 0; j < this.countCol; j++)
            {
                 this.grid[i, j] = randNumber.Next(min, max);
            }
        }

        public Matrix Add(Matrix MatrixB)
        {
            Matrix resultMatrix = SetColAndRow(this.countRow, this.countCol);

            int result;
            for (int i = 0; i < this.countRow; i++)
                for (int j = 0; j < this.countCol; j++)
                {
                    result = this.grid[i, j] + MatrixB.GetElementValue(i, j);
                    resultMatrix.SetElementValue(i, j, result);
                }

            return resultMatrix;
        }


        public Matrix Sub(Matrix MatrixB)
        {
            Matrix resultMatrix = SetColAndRow(this.countRow, this.countCol);

            int result;
            for (int i = 0; i < this.countRow; i++)
                for (int j = 0; j < this.countCol; j++)
                {
                    result = this.grid[i, j] - MatrixB.GetElementValue(i, j);
                    resultMatrix.SetElementValue(i, j, result);
                }

            return resultMatrix;
        }

        public int GetElementValue(int row, int col)
        {
            return this.grid[row, col];
        }

        public void SetElementValue(int row, int col, int val)
        {
            this.grid[row, col] = val;
        }

        public int GetCountRow()
        {
            return this.countRow;
        }


        public int GetCountCol()
        {
            return this.countCol;
        }

        public int[,] GetMatrix()
        {
            return this.grid;
        }
    }
}