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day3: cleanup

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This commit is contained in:
Johannes Loher 2020-12-04 09:27:43 +01:00
parent 3dd39bac7a
commit 825cf44894
2 changed files with 3 additions and 5 deletions
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6
day3/part1/main.d
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@ -5,14 +5,13 @@ void main()
File("input", "r").byLineCopy.array.countTrees(3, 1).writeln; File("input", "r").byLineCopy.array.countTrees(3, 1).writeln;
} }
ulong countTrees(T)(T input, int angleX, int angleY) ulong countTrees(const char[][] input, int angleX, int angleY)
in(input.length > 0) in(input.length > 0)
{ {
immutable width = input[0].length; immutable width = input[0].length;
size_t count = 0;
size_t x = 0; size_t x = 0;
return input.stride(angleY).map!((row) { return input.stride(angleY).map!((row) {
auto result = row[x]; immutable result = row[x];
x = (x + angleX) % width; x = (x + angleX) % width;
return result; return result;
}) })
@ -35,5 +34,4 @@ unittest
.#..#...#.#`.byChar.splitter("\n").map!array.array; .#..#...#.#`.byChar.splitter("\n").map!array.array;
assert(input.countTrees(3, 1) == 7); assert(input.countTrees(3, 1) == 7);
} }

2
day3/part2/main.d
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@ -19,7 +19,7 @@ in(input.length > 0)
immutable width = input[0].length; immutable width = input[0].length;
size_t x = 0; size_t x = 0;
return input.stride(angleY).map!((row) { return input.stride(angleY).map!((row) {
auto result = row[x]; immutable result = row[x];
x = (x + angleX) % width; x = (x + angleX) % width;
return result; return result;
}) })