public string Exchange(ReadOnlySpan <char> input, string baseLine)
{
var target = new Dance(baseLine);
if (input.Length > 0)
{
target.Exchange(input.Slice(1));
}
else
{
target.Exchange(input);
}
return(target.Result());
}
private void DanceSingle(Dance dance, string[] moves)
{
foreach (string move in moves)
{
switch (move[0])
{
case 's':
{
dance.Spin(int.Parse(move.Substring(1)));
break;
}
case 'x':
{
string[] p = move.Substring(1).Split("/");
dance.Exchange(int.Parse(p[0]), int.Parse(p[1]));
break;
}
case 'p':
{
string[] p = move.Substring(1).Split("/");
dance.Partner(p[0][0], p[1][0]);
break;
}
}
}
}