Problem 4. Make a checkerboard matrix

Solution 103344

Submitted on 27 Jun 2012

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Wenjian Yu on 10 Oct 2012

So brilliant!

Hywel Owen on 28 Feb 2013

Very clever.

Test	Status	Code Input and Output
1	Fail	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))) Error using VisibleTest1 (line 7) Output argument "ans" (and maybe others) not assigned during call to "checkerboard".
2	Fail	n = 4; a = [1 0 1 0; 0 1 0 1; 1 0 1 0; 0 1 0 1]; assert(isequal(a,checkerboard(n))) Error using VisibleTest2 (line 6) Output argument "ans" (and maybe others) not assigned during call to "checkerboard".
3	Fail	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))) Error using VisibleTest3 (line 9) Output argument "ans" (and maybe others) not assigned during call to "checkerboard".

Test

Status

Code Input and Output

Fail

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)))

Error using VisibleTest1 (line 7) Output argument "ans" (and maybe others) not assigned during call to "checkerboard".

Fail

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

Error using VisibleTest2 (line 6) Output argument "ans" (and maybe others) not assigned during call to "checkerboard".

Fail

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)))

Error using VisibleTest3 (line 9) Output argument "ans" (and maybe others) not assigned during call to "checkerboard".