Question

How to check if a matrix is symmetric (square matrix that is equal to its transpose) in C#

Answer 1

using System;

public class Program
{
	private static bool checkSymmetric(int[][] matrix) {
		int rows = matrix.Length;
		int cols = matrix[0].Length;

		if (rows != cols) {
			return false;
		}

		for (int i = 0; i < rows; i++) {
			for (int j = 0; j < cols; j++) {
				if (matrix[i][j] != matrix[j][i]) {
					return false;
				}
			}
		}

		return true;
	}
	public static void Main(string[] args)
	{
		   int[][] matrix = new int[][]
		   {
			   new int[] {1, 5, 2, 4},
			   new int[] {5, 6, 3, 7},
			   new int[] {2, 3, 9, 0},
			   new int[] {4, 7, 0, 8}
		   };

		if (checkSymmetric(matrix)) {
			Console.Write("yes");
		}
		else {
			Console.Write("no");
		}
	}
}





/*
run:
 
yes
 
*/

 

70+ SQL courses for beginners and professionals