That print line isn't printing the size; I didn't think that was what the OP wanted, from the code he/she demonstrated. It looked like he/she just wanted to find the "length" of the array (actually the last index) in order to loop over the inner arrays, then print out each element. So that's what my code does: the print line is printing the element with index $k in the array at $i in the original array @array.