Between numbers

Find values betwee original values in a vector

Calculate the values between two values in any vector.
Use: v2 = intAB(v)
When v have n elements, v2 will have n-1 elements.
Example:
v = [1,2,3,4,5]
v2 = intAB(v)
v2 = [1.5,2.5,3.5,4.5]