Question

How to sum the corners of a matrix in C#

Answer 1

using System;

public class MatrixCornerSum
{
	public static int sumMatrixCorners(int[][] matrix) {
		return matrix[0][0] + 
		       matrix[0][matrix[0].Length - 1] + 
		       matrix[matrix.Length - 1][0] + 
		       matrix[matrix.Length - 1][matrix[0].Length - 1];
	}

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

		Console.WriteLine(sumMatrixCorners(matrix));
	}
}



/*
run:
     
14
     
*/

 

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