If I have a jagged array set out like this:
[0][0]{128}
[0][1]{512}
[1][0]{64}
How would I get both the indexes of the number. So if I tried to get 64 I would get something like 0,1 indicating the index of the item. I tried using the Array.IndexOf() method but I get -1 as it isn't built for jagged arrays. Format of the output isn't important. It can be a string, two intergers, a byte array, anything.
Try this:
public static Tuple<int, int> IndexOf<T>(this T[][] jaggedArray, T value)
{
for (int i = 0; i < jaggedArray.Length; i++)
{
T[] array = jaggedArray[i];
for (int j = 0; j < array.Length; j++)
if (array[j].Equals(value))
return Tuple.Create(i, j);
}
return Tuple.Create(-1, -1);
}
You can use it as:
int[][] myArray = ...
Tupple<int, int> position = myArray.IndexOf(64);
Or for matrixes:
public static Tuple<int, int> IndexOf<T>(this T[,] matrix, T value)
{
int width = matrix.GetLength(0);
int height = matrix.GetLength(1);
for (int x = 0; x < width; ++x)
for (int y = 0; y < height; ++y)
if (matrix[x, y].Equals(value))
return Tuple.Create(x, y);
return Tuple.Create(-1, -1);
}
You might still want to check for NULL values or NULL arrays, but that is up to you.
