33 lines
793 B
Text
33 lines
793 B
Text
Day 2 Notes
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Part1:
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$ elixir day2part1.exs
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414
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Thoughts:
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Use a regex to parse the input
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Huh, can't iterate a string with Enum. Split into a list with String.graphemes/1
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------
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Part2:
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$ elixir day2part2.exs
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413
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Thoughts:
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Convert indices to be zero-based.
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No xor operator without importing Bitwise? Just write it manually.
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Initially misread the problem - thought first position must match, and second position must not match,
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which caused some confusion.
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Probably rebound to the same variable names a bit too much - should work on clearer variable names.
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After reading the elixir forum thread, String.at would have been fine for Part 2.
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https://elixirforum.com/t/advent-of-code-2020-day-2
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Also feel pretty dumb that I didn't realise bool != bool is effectively xor
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