Solution 1640004

Submitted on 8 Oct 2018 by Philippe S.

Size: 7
This is the leading solution.

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2 Comments

2 Comments

Athul Prakash on 19 Oct 2020

function b = back_and_forth(n)
b = zeros(n);
b(:) = (1:n.^2);
c = flipud(b);
b(:,2:2:size(b,2)) = c(:,2:2:size(b,2));
b=b';
end

jljl jacky on 16 Dec 2020

x=reshape(1:n*n,n,n)';
for i =2:2:n
x(i,:)=flip(x(i,:));
end
b=x;

Test Suite

Test	Status	Code Input and Output
1	Pass	n = 4; a = [ 1 2 3 4; 8 7 6 5; 9 10 11 12; 16 15 14 13]; assert(isequal(a,back_and_forth(n))); [Warning: Function assert has the same name as a MATLAB builtin. We suggest you rename the function to avoid a potential name conflict.] [> In unix (line 32) In back_and_forth (line 2) In ScoringEngineTestPoint1 (line 6) In solutionTest (line 3)]
2	Pass	n = 5; a = [ 1 2 3 4 5; 10 9 8 7 6; 11 12 13 14 15; 20 19 18 17 16; 21 22 23 24 25]; assert(isequal(a,back_and_forth(n))); [Warning: Function assert has the same name as a MATLAB builtin. We suggest you rename the function to avoid a potential name conflict.] [> In unix (line 32) In back_and_forth (line 2) In ScoringEngineTestPoint2 (line 7) In solutionTest (line 5)]

Test

Status

Code Input and Output

Pass

n = 4; a = [ 1 2 3 4; 8 7 6 5; 9 10 11 12; 16 15 14 13]; assert(isequal(a,back_and_forth(n)));

[Warning: Function assert has the same name as a MATLAB builtin. We suggest you rename the function to avoid a potential name conflict.] [> In unix (line 32) In back_and_forth (line 2) In ScoringEngineTestPoint1 (line 6) In solutionTest (line 3)]

Pass

n = 5; a = [ 1 2 3 4 5; 10 9 8 7 6; 11 12 13 14 15; 20 19 18 17 16; 21 22 23 24 25]; assert(isequal(a,back_and_forth(n)));