indexing array in matlab code example

Example 1: matlab matrix indexing

v = [16 5 9 4 2 11 7 14];
v(3)     % Extract the third element  (ans = 9)

Example 2: matlab array indexing

Indicating indexes between ([]) retrieves corresponding values in Matlab. 
array_borders=array([1 end])
As end defines size of the array, retrieve first and last border values of array
even_values=array(2:2:end)
Retrieve only second elements of array, from secon with 2 step iteration 
increase until end of array.
first_3_values=array(1:3)
Retrieve only first 3 elements of array.