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23,007 Pointshelp!! jagged arrays
Steven Parker this one is a real toughy
where im i going wrong
namespace Treehouse.CodeChallenges
{
public static class MathHelpers
{
public static int[][] BuildMultiplicationTable(int maxFactor)
{
int[][] arr = new int[maxFactor][];// creating array of arrays.number of rows depend on maxfactor
for (int rowindex = 0; rowindex < arr.Length; rowindex++)
{
arr[rowindex] = new int[maxFactor];//creating colums in each row using maxfactor
for (int colIndex = 0; colIndex < arr[rowindex].Length; colIndex++)
{
arr[rowindex][colIndex] = rowindex * colIndex;//initialising values for each num
}
}
return arr;
}
}
}
1 Answer
Florian Stegemann
Full Stack JavaScript Techdegree Student 22,660 PointsHey, you're almost there with your code but take another look at the example in the challenge. For a maxFactor of 3 an array with a size of 4 by 4 is returned, because you want all the products from 0 up to and including 3. By just supplying maxFactor as the size for the arrays, you're only getting the products from 0 up to but excluding maxFactor, which means your Arrays are currently always to small by one element.
Steven Parker
231,198 PointsSteven Parker
231,198 PointsHi, I was alerted by your tag. But it looks like Florian beat me to it, and I agree with his analysis.
Just expand your array sizes by one and you'll pass the challenge.