Dimensioning an array

Question

For a string array of 2 elements should the dimension at the design time be -

Dimensionless /
Two /
More than two

to limit the use of memory

Answer 1

Now see why would you keep the size more than 2 if you have only 2 elements to occupy the array.

Keeping the size 2 or giving no size and initializing the array with only 2 elements are both the same thing and will occupy equal memory space.