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csharp
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using System; using System.Collections; using System.Collections.Generic; using System.Diagnostics; using System.IO; using System.Linq; namespace Day5 { public class Move { public int Amount { get; set; } public int From { get; set; } public int To { get; set; } } internal class Program { public static List<string> Input => File.ReadAllLines(@"input.txt").ToList(); public static Dictionary<int, Stack<char>> Stacks => new Dictionary<int, Stack<char>>() { { 1, new Stack<char>( new char[] { 'H', 'T', 'Z', 'D' } ) }, { 2, new Stack<char>( new char[] { 'Q', 'R', 'W', 'T', 'G', 'C', 'S' } ) }, { 3, new Stack<char>( new char[] { 'P', 'B', 'F', 'Q', 'N', 'R', 'C', 'H' } ) }, { 4, new Stack<char>( new char[] { 'L', 'C', 'N', 'F', 'H', 'Z' } ) }, { 5, new Stack<char>( new char[] { 'G', 'L', 'F', 'Q', 'S' } ) }, { 6, new Stack<char>( new char[] { 'V', 'P', 'W', 'Z', 'B', 'R', 'C', 'S' } ) }, { 7, new Stack<char>( new char[] { 'Z', 'F', 'J' } ) }, { 8, new Stack<char>( new char[] { 'D', 'L', 'V', 'Z', 'R', 'H', 'Q' } ) }, { 9, new Stack<char>( new char[] { 'B', 'H', 'G', 'N', 'F', 'Z', 'L', 'D' } ) }, }; public static List<Move> MoveList => Input.Skip(Input.FindIndex(x => x == "") + 1).Select(x => new Move() { Amount = int.Parse(x.Split(' ')[1]), From = int.Parse(x.Split(' ')[3]), To = int.Parse(x.Split(' ')[5]), }).ToList(); static void Main(string[] args) { var Part1Stacks = Stacks; var Part2Stacks = Stacks; foreach (var move in MoveList) { //Part1 for (int i = 0; i < move.Amount; i++) { var crate = Part1Stacks[move.From].Pop(); Part1Stacks[move.To].Push(crate); } //Part2 var crates = Part2Stacks[move.From].PopRange(move.Amount).Reverse<char>().ToArray(); Part2Stacks[move.To].PushRange(crates); } foreach (var stack in Part1Stacks) { Console.Write(stack.Value.Peek()); } foreach (var stack in Part2Stacks) { Console.Write(stack.Value.Peek()); } Console.ReadLine(); } } public static class Extensions { public static List<T> PopRange<T>(this Stack<T> stack, int amount) { var result = new List<T>(amount); while (amount-- > 0 && stack.Count > 0) { result.Add(stack.Pop()); } return result; } public static void PushRange<T>(this Stack<T> source, IEnumerable<T> collection) { foreach (var item in collection) source.Push(item); } } }
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