Homework 4, Problem 2, Trouble

I can't figure out what is wrong with my solution.

Write a function called checkerboard that takes as input two positive integer scalars, n and m, in that order. The function must create and return board, which is an n-by-m matrix. Every element of board is either 0 or 1. The first element, board(1,1) is 1. No direct neighbors in the matrix, vertically or horizontally, can be equal. That is, a 1 element cannot have 1 immediately preceding or following it in the same row or column.

This is my solution, but it has problem with arguments 1,1.

function board = checkerboard(A)

[n m] = size(A);

board = eye(n,m);

end

[Torsten]

Google "checkerboard".

Best wishes

Torsten.

[Brendan Hamm]

Your solution will produce many neighbors which are equally 0 anytime n or m is greater than 2.

Answer 1

[Sean de Wolski]

checkerboard that takes as input two positive integer scalars

Yours is taking a matrix, A, it should take in n, m and not have to calculate them

[Emily Lim]

Thank you.

function board = checkerboard (n , m) board = zeros(n,m); board (1:2:n , 1:2:m)=1; board (2:2:n , 2:2:m)=1; end

This works.