Solved

create a common array

Posted on 2002-04-22
4
249 Views
Last Modified: 2010-05-02
Hi,

I have 2 arrays : arr1(5) , arr2(3) . How can I create a third array which contains only the common items in arr1 & arr2
Important: arr2() may becomes one time longer than arr1() , I mean that their long are not fixed
I look forward the code which can do that.

Thanx
0
Comment
Question by:ray14
  • 2
4 Comments
 
LVL 3

Expert Comment

by:jjmartin
ID: 6961397
Are the array's sorted in any particular order?
0
 
LVL 15

Accepted Solution

by:
ameba earned 100 total points
ID: 6961438
' Form1 code
Option Explicit

Private Sub Form_Click()
    Print Join(GetCommon(Split("a b cc dd", " "), Split("cc dd e f", " ")), " ")
End Sub

' returns items which are in a1 and a2
Private Function GetCommon(a1 As Variant, a2 As Variant) As Variant
    Dim col1 As New Collection, colBoth As New Collection, arrBoth() As String
    Dim i As Long, tmp As String
    On Error Resume Next
   
    ' build collection of unique values
    For i = 0 To UBound(a1)
        col1.Add a1(i), "k" & a1(i)
    Next
   
    ' test all values in a2
    For i = 0 To UBound(a2)
        Err.Clear
        tmp = col1.Item("k" & a2(i)) ' if Item does not exist, we'll get error
        If (Err = 0) Then colBoth.Add a2(i), "k" & a2(i) 'Item exists
    Next
   
    ' fill array
    ReDim arrBoth(0 To colBoth.Count - 1)
    For i = 1 To colBoth.Count
        arrBoth(i - 1) = colBoth.Item(i)
    Next
    GetCommon = arrBoth    ' return array
End Function
0
 

Author Comment

by:ray14
ID: 6963434
Hi ameba,

Thanks for your answer and it is  nice to receive your help again. As I promised in my last question I’ll increase the points by +50 then it will be 100  thanks again.

 Ray14
0
 
LVL 15

Expert Comment

by:ameba
ID: 6963463
Thank you  :-)
0

Featured Post

Free Tool: IP Lookup

Get more info about an IP address or domain name, such as organization, abuse contacts and geolocation.

One of a set of tools we are providing to everyone as a way of saying thank you for being a part of the community.

Question has a verified solution.

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

Suggested Solutions

Title # Comments Views Activity
Windows 10 start screen issues 9 55
Put text in a picture ASP.NET C# 2 61
Error when passing an argument to a vb6 that contains  '/' 7 40
Set WorkSheet  not Working 9 44
Introduction While answering a recent question about filtering a custom class collection, I realized that this could be accomplished with very little code by using the ScriptControl (SC) library.  This article will introduce you to the SC library a…
If you need to start windows update installation remotely or as a scheduled task you will find this very helpful.
Get people started with the process of using Access VBA to control Excel using automation, Microsoft Access can control other applications. An example is the ability to programmatically talk to Excel. Using automation, an Access application can laun…
Get people started with the utilization of class modules. Class modules can be a powerful tool in Microsoft Access. They allow you to create self-contained objects that encapsulate functionality. They can easily hide the complexity of a process from…

828 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