SkipList is broken

[edward-a]

It doesn't seem to work. See the code below.

  SkipList<int> sl = new();
  sl.Add(1);
  sl.Add(2);
  sl.Remove(1);
  // Error: sl.Count == 2

[github-actions]

Thanks for supporting the development of C# Algorithms with your first issue! We look forward to handling it.

[hoowee]

您好，您的邮件我已经收到，会尽快处理，谢谢！中建八局设计管理总院 胡伟