Array indices, change the element order?

[Bulldog]

If I have a function that accepts an array as a parameter, e.g.

double DoStuff(int arr[])

Are there any ways of specifiying the indices of that array to effect a change in the array element order?

So doing something like...

double DoStuff(int arr[3,1,0,2])
or
double DoStuff(int arr[3], arr[1], arr[0], arr[2])
or
something similar?

I can of course create a new array with the elements in the revised order and pass that, but just wondered if there is a shortcut for this?

[passel]

Not that I'm aware of.
If I really needed that type of access to an array (and I have as part of a MasterMind game), I would use a second array that would pass the indexes in the order needed.
That gives you a level of indirection, essentially replicating the functionality of pointers into the array.
double DoStuff(int arr[], int idx[])

Loop (example. by i) and access the array in idx order
arr[idx[i]]

[2kaud]

If you are using c++11 then another possibility could be an initializer list. See http://www.cplusplus.com/reference/i...tializer_list/

[AceInfinity]

How big is your array? Why don't you just pass a container to the function which contains the order of the read?