Problem 19. Swap the first and last columns

Solution 267862

Submitted on 26 Jun 2013

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Rona on 26 Jun 2013

It works perfectly on Matlab. No idea why this says it failed...

James on 26 Jun 2013

For A=1, it returns B=[1 1] because A(:,end) and A(:,1) are both 1. It should return B=1. Hope this helps.

Rona on 30 Jun 2013

Thanks James! I figured it out

Test	Status	Code Input and Output
1	Pass	%% A = [ 12 4 7 5 1 4]; B_correct = [ 7 4 12 4 1 5 ]; assert(isequal(swap_ends(A),B_correct)) B = 7 4 12 4 1 5
2	Pass	%% A = [ 12 7 5 4]; B_correct = [ 7 12 4 5 ]; assert(isequal(swap_ends(A),B_correct)) B = 7 12 4 5
3	Pass	%% A = [ 1 5 0 2 3 ]; B_correct = [ 3 5 0 2 1 ]; assert(isequal(swap_ends(A),B_correct)) B = 3 5 0 2 1
4	Fail	%% A = 1; B_correct = 1; assert(isequal(swap_ends(A),B_correct)) Error: Assertion failed.