Six Glasses in a Row

There are six glasses in a row. The first three are full of orange juice, and the next three are empty. By moving only one glass how can you make them alternate between full and empty?

Make it alternate!

Here is solution!

Alternate Glasses in a Row

What was the riddle? 

All you need to do is pour 2nd glass into 5th one! It is as simple as that

one! See Below!

To make it alternate!