flip an array with the use of vectors

I would like to flip specific cells in an array, not the whole array, with the use of vectors. For example a=[1 7 5 9 3 2 4 1] and i want to flip it from 5 to 2 and make it a=[1 7 2 3 9 5 4 1]. Any suggestions? Thank you in advance.

Answer 1

[Stephen Cobeldick]

"Any suggestions?"

Use indexing (which in MATLAB starts from 1):

>> a = [1,7,5,9,3,2,4,1]
a =
   1   7   5   9   3   2   4   1
>> a(3:6) = a(6:-1:3)
a =
   1   7   2   3   9   5   4   1

[Zenia Askar]

Hello again. Eventually, I choose from the array two numbers (not vectors) and I want to flip these cells instead. For example instead of 3rd and 6th cell, I have mumbers 5 and 2. How can i flip the array in this case? Thank you again.

[Stephen Cobeldick]

>> a = [1,7,5,9,3,2,4,1]
a =
   1   7   5   9   3   2   4   1
>> a([3,6]) = a([6,3])
a =
   1   7   2   9   3   5   4   1

Answer 2

[Meg Noah]

a=[1 7 5 9 3 2 4 1];
a(3:6) = fliplr(a(3:6));