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Start your free trialLoïc Brach
239 PointsI do not understand why the function return is null
Can someone give me more informations ?
namespace Treehouse.CodeChallenges
{
public static class MathHelpers
{
public static int[][] BuildMultiplicationTable(int maxFactor)
{
int[][] MultiplicationTable = new int[maxFactor+1][];
for (int i=0;i<maxFactor;i++){
MultiplicationTable[i] = new int[maxFactor+1];
for (int j=0;j<maxFactor;j++){
MultiplicationTable[i][j]=i*j;
}
}
return(MultiplicationTable);
}
}
}
1 Answer
Steven Parker
231,198 PointsIt's some of your cells that are null.
You sized your table correctly by adding one to maxFactor, but when you iterate through the cells to fill them, you stop short of the last row and column. The condition expressions should compare with "less than or equal" ("<=
") instead of "less than" ("<
").
Loïc Brach
239 PointsLoïc Brach
239 PointsThanks a lot Steven