private static void Run(char[] progs, string[] input, bool logToConsole)
{
var lineup = new Lineup(progs);
var data = input.Where(l => !string.IsNullOrWhiteSpace(l)).Select(l => Parse(lineup, l)).ToArray();
_shouldLogToConsole = false;
var dance = data[0];
const int iterations = 1_000_000_000;
for (var i = 0; i < iterations; i++)
{
if ((i % 1_000_000) == 0)
{
System.Console.WriteLine(i);
}
foreach (var instruction in dance)
{
instruction.Dance();
}
}
var result = lineup.Dancers.OrderBy(d => d.Position).Select(d => d.Name).ToArray();
Console.WriteLine(string.Join("", result));
}
private static IDanceInstruction[] Parse(Lineup lineup, string line)
{
return(line.Split(",")
.Select(inst =>
{
switch (inst[0])
{
case 's':
return (IDanceInstruction) new Spin(lineup, int.Parse(inst.Substring(1)));
case 'x':
var split = inst.Substring(1).Split("/");
return new Exchange(lineup, int.Parse(split[0]), int.Parse(split[1]));
case 'p':
return new Partner(lineup, inst[1], inst[3]);
default:
throw new Exception($"I have no idea what to do with {inst}");
}
}).ToArray());
}
public Partner(Lineup lineup, char first, char second)
{
this.First = lineup.Dancers.First(d => d.Name == first);
this.Second = lineup.Dancers.First(d => d.Name == second);
}
public Exchange(Lineup lineup, int position1, int position2)
{
this.Position1 = position1;
this.Position2 = position2;
this.Lineup = lineup;
}
public Spin(Lineup lineup, int steps)
{
this.Lineup = lineup;
this.Steps = steps;
}