109 lines
2.8 KiB
C#
109 lines
2.8 KiB
C#
using System;
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using System.Collections.Generic;
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using System.Data;
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using System.Linq;
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using System.Text;
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using System.Threading.Tasks;
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namespace Lab
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{
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internal class Matrices
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{
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public static DataTable CreateMatrix(int rows, int cols, string prefix)
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{
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DataTable dt = new DataTable();
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for (int col = 0; col < cols; col++)
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{
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dt.Columns.Add($"{prefix}{col + 1}", typeof(double));
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}
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for (int row = 0; row < rows; row++)
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{
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DataRow dr = dt.NewRow();
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for (int col = 0; col < cols; col++)
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{
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dr[col] = 0;
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}
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dt.Rows.Add(dr);
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}
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return dt;
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}
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public static DataTable CreateMatrixInts(int rows, int cols, string prefix)
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{
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DataTable dt = new DataTable();
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for (int col = 0; col < cols; col++)
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{
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dt.Columns.Add($"{prefix}{col + 1}", typeof(int));
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}
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for (int row = 0; row < rows; row++)
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{
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DataRow dr = dt.NewRow();
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for (int col = 0; col < cols; col++)
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{
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dr[col] = 0;
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}
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dt.Rows.Add(dr);
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}
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return dt;
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}
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public static void RandomFill(DataTable dt, int minIncl, int maxIncl)
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{
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Random rng = new Random();
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for (int row = 0; row < dt.Rows.Count; row++)
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{
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for (int col = 0; col < dt.Columns.Count; col++)
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{
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dt.Rows[row][col] = (double)rng.Next(minIncl, maxIncl + 1);
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}
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}
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}
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public static int[,] ToArray(DataTable dt)
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{
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int rows = dt.Rows.Count;
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int cols = dt.Columns.Count;
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var array = new int[rows, cols];
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for (int row =0; row < rows; row++)
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{
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for (int col = 0; col < cols; col++)
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{
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double num = (double)dt.Rows[row][col];
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num = double.IsInfinity(num) || double.IsNaN(num) ? 0 : num;
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array[row, col] = Convert.ToInt32(num);
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}
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}
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return array;
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}
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public static DataTable FromArray(int[,] array, string prefix)
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{
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int rows = array.GetLength(0);
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int cols = array.GetLength(1);
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var dt = CreateMatrix(rows, cols, prefix);
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for (int row = 0; row < rows; row++)
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{
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for (int col = 0; col < cols; col++)
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{
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dt.Rows[row][col] = array[row, col];
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}
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}
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return dt;
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}
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}
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}
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