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C# Intermediate C# Polymorphism Virtual Methods

Syed Abbas
Syed Abbas
4,762 Points
Posted by Syed Abbas
Syed Abbas
4,762 Points

Scan Method in Polymorphism - overriding methods

Hi I am new to c# so not sure how to develop this scan method. Any help will be appreciated. Thanks.

SequenceDetector.cs 
namespace Treehouse.CodeChallenges
{
    class  SequenceDetector
    {
        public virtual bool Scan(int[] sequence)
        {
            return true;
        }
    }
}
RepeatDetector.cs 
namespace Treehouse.CodeChallenges
{
    class RepeatDetector:SequenceDetector
    {
        public override bool Scan(int[] sequence)
        {   
            int previous = 0;
            for(int i=0;i<=sequence.Length;i++)
            {

             int current = sequence[i];
             if(previous==current)
             {
             return true;
             }   
             previous = sequence[i];
             }
        }
    }
}

1 Answer

Simon Owerien
Simon Owerien
12,829 Points
Simon Owerien
Simon Owerien
12,829 Points

You are currently checking in the first iteration of the loop if (0==sequence[0]). You should modify your loop and the previous variable in a way so you either skip the first iteration or you check the right variables. A good hint would be to start your loop not at index 0 but at index 1.