8 lines
829 B
Markdown
8 lines
829 B
Markdown
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Nothing much to say about this one, we play a bit with the triangle formulas until we reach something that looks like a [Pell equation](https://en.wikipedia.org/wiki/Pell%27s_equation).
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My approach is basically the same as the one on [mathblog.dk](http://www.mathblog.dk/project-euler-94-almost-equilateral-triangles/), but he explains it better.
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(And I improved my approach a bit after I read his article, his math skills are pretty good :D).
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The code is in a way interesting because it only has a single conditional operator.
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I could remove two conditional by multiplying the increment with the normalized condition (`0`|`1`).
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This way `if (condition) { x += increment; }` becomes ` x += (int)(condition) * increment`,
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which is a neat way to safe a bit of space in our program (and the resulting 40x5 code is pretty compact)
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