问题2160. 17x17问题

由ned gulely.

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这个问题有时被称为<a href = "http://bit-player.org/2009/the-17x17-challenge">17x17挑战</a>。<a href = "//www.tianjin-qmedu.com/matlabcentral/cody/problems/512-spot-the-rectangle">Part 1</a> and <a href = "//www.tianjin-qmedu.com/matlabcentral/cody/problems/514-spot-the-rectangle-part-2">Part 2</a>这次，你的任务是，对于给定的n，构造一个n × n的矩阵其中没有矩形。当矩阵的矩形区域的角上出现四个相同值的实例时，就形成了矩形。Examples:<pre> Input n = 3</pre><pre> Output a = [ 4 1 2 1 4 3 2 1 1 ]</pre><pre> Input n = 5 Output a = [ 4 1 2 4 1 3 3 2 1 4 3 2 4 1 1 1 4 3 2 2 1 1 1 4 4 ]</pre>The answer for a given n is not unique. The test suite will just guarantee that there are no rectangles present.Note 1. I am using Alfonso's <a href = "//www.tianjin-qmedu.com/matlabcentral/cody/problems/514-spot-the-rectangle-part-2/solutions/191508">solution 191508</a> from <a href = "//www.tianjin-qmedu.com/matlabcentral/cody/problems/514-spot-the-rectangle-part-2">problem 514</a> as my testing code. Cody in the service of Cody!Note 2. You can easily answer this problem with a pre-computed response. You could do that, but it would be lame. We want to see your code!

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