mirror of
https://github.com/parnic/advent-of-code-2022.git
synced 2025-06-16 05:30:14 -05:00
Day 10 solution
Pretty happy with this solution. Took me longer to read and understand part 2 than I would have liked, but it's done, and pretty cleanly, too.
This commit is contained in:
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addx -11
|
||||
addx 6
|
||||
addx -3
|
||||
addx 5
|
||||
addx -1
|
||||
addx -8
|
||||
addx 13
|
||||
addx 4
|
||||
noop
|
||||
addx -1
|
||||
addx 5
|
||||
addx -1
|
||||
addx 5
|
||||
addx -1
|
||||
addx 5
|
||||
addx -1
|
||||
addx 5
|
||||
addx -1
|
||||
addx -35
|
||||
addx 1
|
||||
addx 24
|
||||
addx -19
|
||||
addx 1
|
||||
addx 16
|
||||
addx -11
|
||||
noop
|
||||
noop
|
||||
addx 21
|
||||
addx -15
|
||||
noop
|
||||
noop
|
||||
addx -3
|
||||
addx 9
|
||||
addx 1
|
||||
addx -3
|
||||
addx 8
|
||||
addx 1
|
||||
addx 5
|
||||
noop
|
||||
noop
|
||||
noop
|
||||
noop
|
||||
noop
|
||||
addx -36
|
||||
noop
|
||||
addx 1
|
||||
addx 7
|
||||
noop
|
||||
noop
|
||||
noop
|
||||
addx 2
|
||||
addx 6
|
||||
noop
|
||||
noop
|
||||
noop
|
||||
noop
|
||||
noop
|
||||
addx 1
|
||||
noop
|
||||
noop
|
||||
addx 7
|
||||
addx 1
|
||||
noop
|
||||
addx -13
|
||||
addx 13
|
||||
addx 7
|
||||
noop
|
||||
addx 1
|
||||
addx -33
|
||||
noop
|
||||
noop
|
||||
noop
|
||||
addx 2
|
||||
noop
|
||||
noop
|
||||
noop
|
||||
addx 8
|
||||
noop
|
||||
addx -1
|
||||
addx 2
|
||||
addx 1
|
||||
noop
|
||||
addx 17
|
||||
addx -9
|
||||
addx 1
|
||||
addx 1
|
||||
addx -3
|
||||
addx 11
|
||||
noop
|
||||
noop
|
||||
addx 1
|
||||
noop
|
||||
addx 1
|
||||
noop
|
||||
noop
|
||||
addx -13
|
||||
addx -19
|
||||
addx 1
|
||||
addx 3
|
||||
addx 26
|
||||
addx -30
|
||||
addx 12
|
||||
addx -1
|
||||
addx 3
|
||||
addx 1
|
||||
noop
|
||||
noop
|
||||
noop
|
||||
addx -9
|
||||
addx 18
|
||||
addx 1
|
||||
addx 2
|
||||
noop
|
||||
noop
|
||||
addx 9
|
||||
noop
|
||||
noop
|
||||
noop
|
||||
addx -1
|
||||
addx 2
|
||||
addx -37
|
||||
addx 1
|
||||
addx 3
|
||||
noop
|
||||
addx 15
|
||||
addx -21
|
||||
addx 22
|
||||
addx -6
|
||||
addx 1
|
||||
noop
|
||||
addx 2
|
||||
addx 1
|
||||
noop
|
||||
addx -10
|
||||
noop
|
||||
noop
|
||||
addx 20
|
||||
addx 1
|
||||
addx 2
|
||||
addx 2
|
||||
addx -6
|
||||
addx -11
|
||||
noop
|
||||
noop
|
||||
noop
|
||||
111
src/10.cs
Normal file
111
src/10.cs
Normal file
@ -0,0 +1,111 @@
|
||||
using System.Text;
|
||||
|
||||
namespace aoc2022;
|
||||
|
||||
internal class Day10 : Day
|
||||
{
|
||||
private record instruction(int mode, int? val);
|
||||
|
||||
private readonly List<instruction> instructions = new();
|
||||
|
||||
internal override void Parse()
|
||||
{
|
||||
foreach (var line in Util.Parsing.ReadAllLines("10"))
|
||||
{
|
||||
var vals = line.Split(' ');
|
||||
instructions.Add(new instruction(
|
||||
vals[0] == "noop" ? 0 : 1,
|
||||
vals.Length > 1 ? int.Parse(vals[1]) : null
|
||||
));
|
||||
}
|
||||
}
|
||||
|
||||
private static void run(IList<instruction> instructions, Action<int, int> duringCallback)
|
||||
{
|
||||
int instructionPtr = 0;
|
||||
int register = 1;
|
||||
int? cyclesUntilAdvance = null;
|
||||
for (int cycle = 1; instructionPtr < instructions.Count; cycle++)
|
||||
{
|
||||
// during
|
||||
var inst = instructions[instructionPtr];
|
||||
switch (inst.mode)
|
||||
{
|
||||
case 0:
|
||||
instructionPtr++;
|
||||
break;
|
||||
|
||||
case 1:
|
||||
if (cyclesUntilAdvance.HasValue)
|
||||
{
|
||||
cyclesUntilAdvance--;
|
||||
if (cyclesUntilAdvance == 0)
|
||||
{
|
||||
instructionPtr++;
|
||||
cyclesUntilAdvance = null;
|
||||
}
|
||||
}
|
||||
else
|
||||
{
|
||||
cyclesUntilAdvance = 1;
|
||||
}
|
||||
break;
|
||||
|
||||
default:
|
||||
throw new Exception();
|
||||
}
|
||||
|
||||
duringCallback(cycle, register);
|
||||
|
||||
// after
|
||||
if (cyclesUntilAdvance == null && inst.val.HasValue)
|
||||
{
|
||||
register += inst.val.Value;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
internal override string Part1()
|
||||
{
|
||||
List<(int cycle, int signal)> signals = new();
|
||||
var importantCycles = new int[] {20, 60, 100, 140, 180, 220};
|
||||
run(instructions, (int cycle, int register) =>
|
||||
{
|
||||
if (importantCycles.Contains(cycle))
|
||||
{
|
||||
int signal = cycle * register;
|
||||
signals.Add((cycle, signal));
|
||||
}
|
||||
});
|
||||
|
||||
return $"Sum of important cycle values: <+white>{signals.Sum(x => x.signal)}";
|
||||
}
|
||||
|
||||
internal override string Part2()
|
||||
{
|
||||
var bitmap = new bool[6, 40];
|
||||
run(
|
||||
instructions,
|
||||
(cycle, register) =>
|
||||
{
|
||||
int row = (int)Math.Floor((cycle - 1) / (double)bitmap.GetLength(1));
|
||||
int col = (cycle - 1) % bitmap.GetLength(1);
|
||||
bitmap[row, col] = Math.Abs(register - col) < 2;
|
||||
}
|
||||
);
|
||||
|
||||
StringBuilder sb = new();
|
||||
sb.Append(Environment.NewLine);
|
||||
for (int row = 0; row < bitmap.GetLength(0); row++)
|
||||
{
|
||||
for (int col = 0; col < bitmap.GetLength(1); col++)
|
||||
{
|
||||
sb.Append(bitmap[row, col] ? "█" : " ");
|
||||
}
|
||||
|
||||
sb.Append(Environment.NewLine);
|
||||
}
|
||||
|
||||
return $"CRT display after instructions: <+white>{sb}";
|
||||
}
|
||||
}
|
||||
Reference in New Issue
Block a user