Size of multi-dimensional array

[tim]

How do you determine the size of a multi-dimensional array? I have a
2Xn array and I want to determine what n is so I can load the array
into a hash table.

 

[Mike Schilling]

How do you determine the size of a multi-dimensional array? I have a
2Xn array and I want to determine what n is so I can load the array
into a hash table.

If you know it's a square array (i.e. that all the elements of the outer
array are the same length), try

arr.length * arr[0].length;

If not, a precise answer would require

int sum = 0;
for (int i = 0; i < arr.length; i++)
sum += arr.length;

 

[Knute Johnson]

How do you determine the size of a multi-dimensional array? I have a
2Xn array and I want to determine what n is so I can load the array
into a hash table.

array[0].length;