Problem 4. Make a checkerboard matrix

Solution 306061

Submitted on 18 Aug 2013 by Alfonso Nieto-Castanon

Size: 10
Leading solution size is 7.

This solution is locked. To view this solution, you need to provide a solution of the same size or smaller.

Solve This Problem View on Solution Map

6 Comments

6 Comments

Show 3 older comments

Christian on 10 Mar 2014

Tricky solution!

Duff H on 20 Jul 2014

How do I view solutions? Everything is locked. It says I may solve ANOTHER problem to unlock, but I keep solving and everything is still locked. Not terribly helpful.

Adam on 28 Nov 2014

You have to solve additional problems and then come back to look at the solutions here.

John Nikas on 11 Jan 2015

Nice and simple "math" solution!

zefeng chen on 17 Jun 2017

if i can do that i dont need to view this solution,what a stupid rule

liang xu on 26 Oct 2017

so stupid rule!!

Test Suite

Test	Status	Code Input and Output
1	Pass	%% n = 5; a = [1 0 1 0 1; 0 1 0 1 0; 1 0 1 0 1; 0 1 0 1 0; 1 0 1 0 1]; assert(isequal(a,checkerboard(n))) ans = []
2	Pass	%% n = 4; a = [1 0 1 0; 0 1 0 1; 1 0 1 0; 0 1 0 1]; assert(isequal(a,checkerboard(n))) ans = []
3	Pass	%% n = 7; a = [1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1]; assert(isequal(a,checkerboard(n))) ans = []

Test

Status

Code Input and Output

Pass

%% n = 5; a = [1 0 1 0 1; 0 1 0 1 0; 1 0 1 0 1; 0 1 0 1 0; 1 0 1 0 1]; assert(isequal(a,checkerboard(n)))

ans = []

Pass

%% n = 4; a = [1 0 1 0; 0 1 0 1; 1 0 1 0; 0 1 0 1]; assert(isequal(a,checkerboard(n)))

ans = []

Pass

%% n = 7; a = [1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1]; assert(isequal(a,checkerboard(n)))

ans = []

Problem 4. Make a checkerboard matrix

Test Suite

Suggested Problems

More from this Author95

Problem 4. Make a checkerboard matrix

Test Suite

Suggested Problems

More from this Author95

Players