How to automate the sequence of code?

Hi I am planning to automate this piece of code which is below:

A=[1 2 3 4 5 6 7 8 9 10]

len_A=length(A)=10

if (A(3)>A(2))

   Num_mean=   mean(A(1):A(3))

   if (A(5)>A(4))

        Num_mean=   mean(A(3):A(5))

      if (A(7)>A(6))

        Num_mean=   mean(A(5):A(7))

        if (A(9)>A(8))

        Num_mean=   mean(A(7):A(9))

        Num_mean= mean(A(9):A(10))

        else
            Num_mean= mean(A(7):A(8))

        end
      end

   end
  end

The length of A is always greater than 2 and it is always even.

Here is another example

A=[1 2 3 4 5 6]

len_A=length(A)=6

if (A(3)>A(2))

   Num_mean=   mean(A(1):A(3))

   if (A(5)>A(4))

        Num_mean=   mean(A(3):A(5))

        Num_mean= mean(A(5):A(6))

        else
            Num_mean= mean(A(3):A(4))

        end
  end

Any help in automating it for any numbers in array A and for any length? All the values should be stored in Num_mean

Answer 1

[Walter Roberson]

If all of the answers are to be stored in Num_mean then why do you bother calculating the means until you know they will be used?

if A > B
  x = calculation
  if C > D
    x = calculation2
  end
end

is faster as

if A > B
  if C > D
    x = calculation2
  else
    x = calculation1
  end
end