Not a bad kata idea per se, but like all katas, this one too requires random tests.

When implementing the random tests, always pass a copy of the input to the function to avoid input manipulation.

Great translation, approved.

Tagged.

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Yep, works now.

Overly tight error margins: expected 843253.1448715855 to be close to 843253.1448715873 +/- 1e-9

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https://www.codewars.com/kata/5a77f725b17101edd5000020/ is the same problem with similar complexity requirements, although it only asks for the optimal time, not for an associated solution sequence.

I don't get the test case height: 1, width: 1, y: -4, x: -9, thought: 'Mirrors'

At time t = 0, the text 'M' starts at y = -4, x = -9 and does not appear in the view.

At time t = 1, the text 'Mi' starts at y = -3, x = -8 and does not appear in the view.

At time t = 2, the text 'Mir' starts at y = -2, x = -7 and does not appear in the view.

At time t = 3, the text 'Mirr' starts at y = -1, x = -6 and does not appear in the view.

At time t = 4, the text 'Mirro' starts at y = 0, x = -5 and does not appear in the view.

At time t = 5, y > 0 and the text can no longer enter the view.

Thus, I return 0n, but the test expects 5n. Why?