Size of array1 = {size1}
$array1[0] = {array1[0]
$array1[1] = {array1[1]
$array1[2] = {array1[2]

Size of array2 = {size2}
$array2[0] = {array2[0]
$array2[1] = {array2[1]
$array2[2] = {array2[2]