Another Method To Reference The Array And The Member Of The Structure To Get The Data?

I have problems with array of structures.my structures are like this

structure order
xxxxxxxxxxx
yyyyyyyyyy
zzzzzzzzzzz
end structure

and then I created many array of structures, like this private arrayorder (100) as order

now i need to sort the entire xxxxxx member of the array of the structure with a function, but I dont want to use loops with arrays indexes to access the information. I want to know if there is another method to reference the array and the member of the structure to get the data.