Advent of Code 2018 Day 1

aoc2018_1.cs

	class Day1_2018 {
		public void Part1() {
			var input = File.ReadAllLines(@"2018\day1.txt");
			var output = 0;

			foreach (var line in input) {
				var number = Convert.ToInt32(line);
				output += number;
			}

			Console.WriteLine(output);
		}

		public void Part2() {
			var input = File.ReadAllLines(@"2018\day1.txt");

			var frequency = 0;
			var frequencies = new List<int>();

			var output = 0;

			while (output == 0) {
				foreach (var line in input) {
					var number = Convert.ToInt32(line);
					frequency += number;

					if (frequencies.Contains(frequency)) {
						output = frequency;
						break;
					}

					frequencies.Add(frequency);
				}
			}

			Console.WriteLine(output);
		}
	}