public static string SolvePart2(string danceMoves, int cycles, string start = "abcdefghijklmnop")
{
var dancers = new ArrayThatDancesWoooo(start);
var counter = 0;
do
{
foreach (var move in danceMoves.Split(','))
{
dancers.Dance(move);
}
counter++;
} while (dancers.ToString() != start && counter < cycles);
// Completed cycles? We're done.
if (counter == cycles)
{
return(dancers.ToString());
}
// Back at the beginning? The answer is in the remainder.
var cyclesLeft = cycles % counter;
for (var i = 0; i < cyclesLeft; i++)
{
foreach (var move in danceMoves.Split(','))
{
dancers.Dance(move);
}
}
return(dancers.ToString());
}
public static string SolvePart1(string danceMoves, string start = "abcdefghijklmnop")
{
var dancers = new ArrayThatDancesWoooo(start);
foreach (var move in danceMoves.Split(','))
{
dancers.Dance(move);
}
return(dancers.ToString());
}