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Start your free trialCalvin Secrest
24,815 PointsGetting Past the C# List<T> for list of integers Challange
The code below works fine in the IDE, but will not let me pass the challenge.
Directions: "Create a static method named GetPowersOf2 that returns a list of powers of 2 from 0 to the value passed in. So if 4 was passed in, the function would return { 1, 2, 4, 8, 16 }. The System.Math.Pow method will come in handy."
Error: " Bummer! Does MathHelpers.GetPowersOf2 return List`1?"
Does anyone now what the Code Challenge is looking for (besides what its asking)
Thanks
using System.Collections.Generic;
using System;
namespace Treehouse.CodeChallenges
{
public static class MathHelpers
{
public static List<int> GetPowersOf2(int input)
{
var returnList = new List<double>();
for (int 1 = 0; i <= input; i++)
{
returnList.Add((int)Math.Pow(2, i));
}
}
}
}
2 Answers
Eduardo Parra San Jose
12,579 PointsHi,
I hope the following tips helps out to solve the challenge:
- The GetPowersOf2 method performs actions but it doesn't include a return statement to return the List
- Variable names cannot start with a number, so in the for loop the variable cannot be called 1, I guess what you wanted was to call it i
- In the signature of the method it says a list of int will be returned, but the returnList type is a list of double
Many thanks. Have a nice day, edu
Eduardo Parra San Jose
12,579 PointsYou're welcome :)
Calvin Secrest
24,815 PointsCalvin Secrest
24,815 PointsThank you for this assistance!