How do i initialize int[][]?

In C# how do i initialize

int[][] test;

I don't want to use int[,] i开发者_如何学编程nstead. I am asking specifically how to initialize the above. The obvious = int[1][1] does not work. I tried a few different ways with no luck and [][] is not really google-able unfortunately (unless its possible!?)

It's called jagged arrays if you want to Google it.

Basically you can initialize the first dimension in the traditional way :

int[][] test = new int[23][];

And you manually initialize the others :

for (int i = 0; i < test.Length; ++i)
    test[i] = new int[42];

You need a for-loop to initialize an array of array.

int[][] test = new int[N][];

for (int i = 0; i < test.Length; i ++)
   test[i] = new int [M];

int[][] scores = new int[5][];

This is called a Jagged Array. So basically you have initialize the "first dimension" first and then each element:

int[][] foo = new int[3][];

foo[0] = new int[2];
...