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C# Intermediate C# Polymorphism Virtual Methods

Posted by roseleen zhou
roseleen zhou
2,321 Points

virtual methods task 2 of 3

subclass the sequence detector class call the new class repeatdetector

SequenceDetector.cs 
namespace Treehouse.CodeChallenges
{
    class SequenceDetector
    {
        public virtual string Description => "";
        public virtual bool Scan(int[] sequence)
        {
            return true;
           }
        }
    }
RepeatDetector.cs 
namespace Treehouse.CodeChallenges
{
  class RepeatDetector : SequenceDectector
  {
    public override bool Scan(int[] sequence)
    {
      if(sequence.Length < 2)
      {
        return false;
        }
         for(int i = 1; i < sequence.Length; ++i)
         {
           if(sequence[i] == sequence[i-1])
           {
             return true;
             }
           }
            return false;
       }
     }
   }

1 Answer

Steven Parker
Steven Parker
231,198 Points
Steven Parker
Steven Parker
231,198 Points

Curious, it looks like you already have the code for task 3 there but you haven't passed task 2 yet?

But the issue is just spelling: your new class is a subclass of "SequenceDectector" (with an extra "c") instead of "SequenceDetector".

roseleen zhou
roseleen zhou
2,321 Points

is it for task 3 was given it by another student . thanks

Steven Parker
Steven Parker
231,198 Points
Steven Parker
Steven Parker
231,198 Points

Good example of the risks of using someone else's code! Not only do you miss out on the learning experience of doing it yourself, but you may also be copying their mistakes. :wink:

Happy coding!