aoc 1+2

www/statics/aoc/2019/01_solution-2.ts

@@ -0,0 +1,32 @@
+namespace AdventOfCode2019_01_2
+{
+	const DAY     = 1;
+	const PROBLEM = 2;
+
+	export async function run()
+	{
+		let input = await AdventOfCode.getInput(DAY);
+		if (input == null) return;
+
+		const fuel = input
+			.split(new RegExp('\r?\n'))
+			.filter(p => p.trim().length > 0)
+			.map(p => parseInt(p))
+			.map(mass => 
+			{
+				let fuel = Math.floor(mass / 3) - 2;
+				let lastfuel = fuel;
+				for (; ; )
+				{
+					let newfuel = Math.floor(lastfuel / 3) - 2;
+					if (newfuel <= 0) break;
+					fuel += newfuel;
+					lastfuel = newfuel;
+				}
+				return fuel;
+			})
+			.reduce((a,b) => a+b);
+
+			AdventOfCode.output(DAY, PROBLEM, fuel.toString());
+	}
+}