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* Solve day 10 part 2June McEnroe2020-11-22
| | | | | | | | I'm so fucking frustrated with this one. I was stuck for hours trying to sort the points by angle not realizing that (int)(angle(a) - angle(b)) would be 0 for all angles with differences smaller than 1. I also wanted to do the sort by atan2(-y, x) - π/2 intuitively to get "up" be zero, but I never got that to work.
* Solve day 10 part 1June McEnroe2020-11-22
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* Solve day 8 part 2June McEnroe2020-11-22
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* Solve day 8 part 1June McEnroe2020-11-22
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* Solve day 7 part 2June McEnroe2020-11-22
| | | | | Yikes, I had gotten annoyed at this on day 7 because I didn't see what was wrong. Turns out I was just missing amp[0].in = 0.
* Solve day 7 part 1June McEnroe2020-11-22
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* Solve day 6 part 2June McEnroe2020-11-22
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* Solve day 6 part 1June McEnroe2020-11-22
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* Solve day 5 part 2June McEnroe2020-11-22
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* Solve day 5 part 1June McEnroe2020-11-22
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* Add alternate shell solution for day 4June McEnroe2020-11-22
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* Solve day 4 part 2June McEnroe2020-11-22
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* Solve day 4 part 1June McEnroe2020-11-22
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* Solve day 3 part 2June McEnroe2020-11-22
| | | | | | | Dang, I got screwed up by normalizing the lines in place rather than just for the intersection function. When it came to calculating the length of the final segment to the intersection, the "last" point was sometimes the wrong end.
* Solve day 3 part 1June McEnroe2020-11-22
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* Solve day 2 part 2June McEnroe2020-11-22
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* Solve day 2 part 1June McEnroe2020-11-22
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* Solve day 1 part 2June McEnroe2020-11-22
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* Solve day 1 part 1June McEnroe2020-11-22