Procedure problem

Posted on 1997-11-20
Last Modified: 2010-05-18
How do i write a procedure which takes an array of ten integer account codes and sorts them into ascending order. The only info i have been givenis:-
TYPE  numbers=array[1..10] of integer
Var   accounts : numbers

i = a var used to index the array  
j = a var used to index the array
figures = an array used to hold integers to be sorted
temp = used as a temporary store when elements of the array
       are to be interchanged
lowest = this holds the index of the current of the current
         lowest element of the array,figures

Top down
  for ten times
    initialize variables
  for the unsorted accounts
     if this account<lowest in unsorted part
       set index of lowest to index of this account
     end if
    end for
set temp var to lowest account number
set lowest to value of first in unsorted part
set first in unsorted part to value of temp var
end for

I know that you will probably find this incredably easy but it is the first procedure i have come up against as i have only been doing this for a month.
any help you can give me will be much appreciated.
Question by:Scarhand
1 Comment

Accepted Solution

mitchell042997 earned 100 total points
ID: 1216917
OK, if you have the globally defined type numbers as the array you are passing, then you will setup your procedure like so:

procedure SortAccounts(var someArray:numbers);

you will call this procedure as follows:


Of course, if accounts is global you don't need to do all this hoopla, (although globally defined variables are trouble waiting to happen).  Now, for the sort, if you know that the accounts is an array of ten, just use a bubble sort.  It's not the fastest, but it will run good enough for an array of size 10.

so, here is what your code will look like (I have not tested this, so some syntactical errors may exist:

  procedure SortAccounts(var AccountArray:numbers);
  var done:boolean;
     for loop:=1 to 9 do   {9 => 10 - 1}
        if AccountArray[loop]<AccountArray[loop+1] then begin
          { This swaps the values in the array }

    until done;

If this produces the variables in the wrong order (for example, ascending instead of descending), just change the less than sign in the if statement to a greater than sign.  Basically, this sort algorithm does the following:

start at the beginning of an indexed list (an array)
go from 1 to n-1 (9 in our case, since size of array = 10)
so... i = 1 .. n-1
if Array[i]<Array[i+1] Swap Array[i] with Array[i+1]
if you do swap, set the done flag to false, because we know we're not done until we traverse through the entire list without making any changes.
Exit the sort procedure once we go through the entire array without making any changes.

Now the array will be returned sorted.  So, if you were to do:

procedure SomeProc;
var A:numbers;
  A[1]=5; A[2]=3; A[3]=7;
  A[1]=1; A[2]=9; A[3]=13;
  A[1]=8; A[2]=33; A[3]=4;

  for loop:=1 to 10 do
    write(A[loop],'  ');


  writeln; writeln;

  for loop:=1 to 10 do
    write(A[loop],'  ');

your output would be:

5  3  7  1  9  13  8  33  4  11

1  3  4  5  7  8  9  11  13  33

Neat, eh?  If you have anymore questions, or if this doesn't help solve your problem, let me know, and I will explain further!  Thanks!!  :)

Featured Post

Windows Server 2016: All you need to know

Learn about Hyper-V features that increase functionality and usability of Microsoft Windows Server 2016. Also, throughout this eBook, you’ll find some basic PowerShell examples that will help you leverage the scripts in your environments!

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Suggested Solutions

Title # Comments Views Activity
Delphi & Indy 10 Whois over Web Proxy 3 1,198
How to resolve an IP Address to a host name 6 1,689
Delphi need modify hand cursor windows 4 561
Conversion ? 15 91
Does your audience prefer people in photos or no people? How can you best highlight what you’re selling? What are your competitors doing, and what can you do that is different and unique from them?  Continue reading to learn how to make your images …
As a business owner, there are many things that keep you up at night. Profit margins, employee retention, human resource protocols, whether your product or service will remain competitive. When you own or manage a technology company that operates la…
Along with being a a promotional video for my three-day Annielytics Dashboard Seminor, this Micro Tutorial is an intro to Google Analytics API data.
Microsoft Active Directory, the widely used IT infrastructure, is known for its high risk of credential theft. The best way to test your Active Directory’s vulnerabilities to pass-the-ticket, pass-the-hash, privilege escalation, and malware attacks …

803 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question