Transpose Matrix ใน C# (การสลับแถว-คอลัมน์)

Transpose ของ Matrix คือการพลิกผ่านแนวทแยง แถวกลายเป็นคอลัมน์ คอลัมน์กลายเป็นแถว

ตัวอย่าง:

Matrix before Transpose: 123 456 789
Matrix after Transpose:  147 258 369

ตัวอย่างโค้ด C#

using System;

public class Demo
{
    public static void Main()
    {
        int i, j, m, n;
        int[,] arr1 = new int[30, 30];
        int[,] arr2 = new int[30, 30];
        Console.Write("\nEnter the number of rows and columns of the matrix :\n");
        Console.Write("Rows entered = ");
        m = Convert.ToInt32(Console.ReadLine());
        Console.Write("Columns entered = ");
        n = Convert.ToInt32(Console.ReadLine());
        Console.Write("Set elements in the matrix...\n");
        for (i = 0; i < m; i++)
        {
            for (j = 0; j < n; j++)
            {
                Console.Write("\n [{0}],[{1}] : ", i, j);
                arr1[i, j] = Convert.ToInt32(Console.ReadLine());
            }
        }
        Console.Write("\n\nMatrix before Transpose:\n");
        for (i = 0; i < m; i++)
        {
            Console.Write("\n");
            for (j = 0; j < n; j++)
                Console.Write("{0}\t", arr1[i, j]);
        }
        // Transpose logic
        for (i = 0; i < m; i++)
        {
            for (j = 0; j < n; j++)
            {
                arr2[j, i] = arr1[i, j];
            }
        }
        Console.Write("\n\nMatrix after Transpose: ");
        for (i = 0; i < m; i++)
        {
            Console.Write("\n");
            for (j = 0; j < n; j++)
                Console.Write("{0}\t", arr2[i, j]);
        }
        Console.Write("\n\n");
    }
}