How can i create a twodimentional NSMutableArray an how can i access it?

[yelssorc]

Hi,

in C i create an array: int a[10][10] = { ... };
and access it using a[1][5]=...;

How can i create a two- or moredimentional NSMutableArray in objective-c and how can i access it?

Thanks

[skochan]

Simply make an array with each element in the array another array:

Code: (Objective-C)

NSMutableArray  *matrix = [NSMutableArray arrayWithCapacity: 10];

// Add an array as each element of matrix

for ( int i = 0; i < 10; ++i )
    [matrix addObject: [NSMutableArray arrayWithCapacity: 10]];

...
// get 2nd row, 3rd column element from matrix

foo = [[matrix objectAtIndex: 1] objectAtIndex: 2];