public void Y2020_Day23_Play_Returns_Correct_Value_Part_1(int moves, int[] expected)
{
// Arrange
int[] arrangement = { 3, 8, 9, 1, 2, 5, 4, 6, 7 };
// Act
LinkedList <int> actual = Day23.Play(arrangement, moves);
// Assert
actual.ShouldBe(expected);
}
public void Y2020_Day23_Play_Returns_Correct_Value_Part_2()
{
// Arrange
IEnumerable <int> arrangement = new[] { 3, 8, 9, 1, 2, 5, 4, 6, 7 }.Concat(Enumerable.Range(10, 999_991));
// Act
LinkedList <int> actual = Day23.Play(arrangement, moves: 10_000_000);
LinkedListNode <int>?item1 = actual.Find(1);
// Assert
item1.ShouldNotBeNull();
var next = item1.Next ?? actual.First;
next.ShouldNotBeNull();
next.Value.ShouldBe(934001);
next = next.Next ?? actual.First;
next.ShouldNotBeNull();
next.Value.ShouldBe(159792);
}