How to create a jagged array that consists of two 2d array? please help. Thank you.
int[][] jaggedArray = new int[3][];
the above code creates a single-dimensional array that has three elements, each of which is a single-dimensional array of integers. Can any one help me in creating a two 2d array.
I think you want something like this,
var jaggedArray = new[]
{
new[] { 1 },
new[] { 1, 2 ,3 },
new[] { 1, 2 }
};
this creates a "jagged" array, with two dimensions where each "row" has a different length.
All of the following assertions would be True.
jaggedArray.Length == 3
jaggedArray[0].Length == 1
jaggedArray[1].Length == 3
jaggedArray[2].Length == 2
If you knew the lengths were fixed but, didn't know the data, you could do,
var jaggedArray = new[] { new int[1], new int[3], new int[2] };
Following on from you comment, maybe you want something like this,
var jaggedArray1 = new[]
{
new[] { 1, 2, 3, 4 },
new[] { 1, 2, 3 },
new[] { 1, 2 }
};
var jaggedArray2 = new[]
{
new[] { 1, 2, 3 },
new[] { 1, 2, 3, 4 }
};
int[][][] jaggedArray = new[]
{
jaggedArray1,
jaggedArray2
};
you could just do,
var jaggedArray = new[]
{
new[]
{
new[] { 1, 2, 3, 4 },
new[] { 1, 2, 3 },
new[] { 1, 2 }
},
new[]
{
new[] { 1, 2, 3 },
new[] { 1, 2, 3, 4 }
}
};
var jaggedArray1 = new[] { new[] { 1,2,3,4}, new[] { 1, 2 ,3 }, new[] { 1, 2 } }; var jaggedArray2 = new[] { new[] { 1,2,3}, new[] { 1, 2 ,3,4 }, }; int[] jaggedArray = new int[2][]; jaggedArray[0] = jaggedArray1; jaggedArray[1] = jaggedArray2;
What about this:
int[][,] jaggedArray = new int[3][,];
The , creates the 2D array in the jagged array. Read more on Multi-dimensional arrays on MSDN.
Next, you have to initialize every 2D array inside that array:
int[,] 2dArray1 = new int[2,3];
jaggedArray[0] = 2dArray1;
int[,] 2dArray2 = new int[4,5];
jaggedArray[1] = 2dArray2;
And so on.
int[3][][]
The second pair of brackets indicates the dimensions. So it's like you are declaring a multi-dimensional array except you don't need to specify dimensions in the definition.You can initialize each array with different dimensions.
int[][,] jaggedArray = new int[3][,];
int[3][][]