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shawn khah
15,082 Pointshelp plz
Challenge Task 1 of 1
Change SequenceDetector.Scan to an abstract method. Bummer! Your code could not be compiled. Please click on "Preview" to view the compiler errors. Restart Preview Get Help Recheck work RepeatDetector.cs SequenceDetector.cs
; 1 namespace Treehouse.CodeChallenges 2 { 3 public abstract class SequenceDetector 4 { 5 public virtual string Description => ""; 6 ā 7 public int[] LastScannedSequence { get; protected set; } 8 ā 9 public abstract bool Scan(int[] sequence); 10 { 11 LastScannedSequence = sequence; 12 return true; 13 } 14 } 15 } 16 ā
namespace Treehouse.CodeChallenges
{
public class RepeatDetector : SequenceDetector
{
public override string Description => "Detects repetitions";
public override bool Scan(int[] sequence)
{
LastScannedSequence = 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;
}
}
}
namespace Treehouse.CodeChallenges
{
public abstract class SequenceDetector
{
public virtual string Description => "";
public int[] LastScannedSequence { get; protected set; }
public abstract bool Scan(int[] sequence);
{
LastScannedSequence = sequence;
return true;
}
}
}
2 Answers
Seth Kroger
56,414 PointsAbstract methods can't have a method body. If you remove the old method body it will pass the challenge.
Geovanie Alvarez
21,500 PointsIn the SequenceDetector class in the scan method just remove the method body.
{
LastScannedSequence = sequence;
return true;
}