Im trying to compare arrayindex slots in a array. I have an arraylist
of size (n) and once all the arraylist slots are filled i would like
to compare each slot so that they are all unique number.
Example: (455,453,456,43 5,437,333) this a unique arraylist
(455,435,455,45 5,422,222) this has multiple values and
will not work.
However in the code below it will loop through each slot however how
can i write code that will compare each slot against the other. I dont
need to worry about the condition of multiple number between slot 1
and slot 2. My only worry is multiple number on the next seqnetial
slot....below is that code i have started.
Public Sub SortArraylist()
For Each intarrayindex In _ReadingArrayLi st3
If (intarrayindex <intarrayinde x) Then
Else
End If
Next
End Sub
7  1286 
cmdolcet69 wrote:
Im trying to compare arrayindex slots in a array. I have an arraylist
of size (n) and once all the arraylist slots are filled
*That's* the time to do the checking: when you're adding entries. If the
value already exists in the arraylist then don't add it.
i would like
to compare each slot so that they are all unique number.
Andrew
On Sep 6, 4:05 am, "Andrew Morton" <a...@in-press.co.uk.inv alid>
wrote:
cmdolcet69 wrote:
Im trying to compare arrayindex slots in a array. I have an arraylist
of size (n) and once all the arraylist slots are filled
*That's* the time to do the checking: when you're adding entries. If the
value already exists in the arraylist then don't add it.
i would like
to compare each slot so that they are all unique number.
Andrew
How would i do that check what code could i place in the existing code
would do that check for me.
cmdolcet69 wrote:
On Sep 6, 4:05 am, "Andrew Morton" <a...@in-press.co.uk.inv alid>
wrote:
>cmdolcet69 wrote:
>>Im trying to compare arrayindex slots in a array. I have an
arraylist of size (n) and once all the arraylist slots are filled
*That's* the time to do the checking: when you're adding entries. If
the value already exists in the arraylist then don't add it.
>>i would like
to compare each slot so that they are all unique number.
How would i do that check what code could i place in the existing code
would do that check for me.
Completely untested - check the syntax in the help:
' only add the new element if it is unique
If Not(myArrayList .Contains(newEl ement)) then
myArrayList.Add (newElement)
End If
Andrew
cmdolcet69 wrote:
Im trying to compare arrayindex slots in a array. I have an arraylist
of size (n) and once all the arraylist slots are filled i would like
to compare each slot so that they are all unique number.
No. Check for uniqueness as you /add/ each item - if it's already
present, don't add another one.
I can't recall if the ArrayList has a Contains() method; if not, you may
have to use a Dictionary-type class, say a HashTable or, if you have
VB'2005, use a List(Of Integer):
Dim aList as ArrayList ' or List(Of Integer)
If ( Not aList.Contains( value ) ) Then
aList.Add( value )
End If
HTH,
Phill W.
Phill W. wrote:
cmdolcet69 wrote:
>Im trying to compare arrayindex slots in a array. I have an arraylist
of size (n) and once all the arraylist slots are filled i would like
to compare each slot so that they are all unique number.
No. Check for uniqueness as you /add/ each item - if it's already
present, don't add another one.
I can't recall if the ArrayList has a Contains() method; if not, you
may have to use a Dictionary-type class, say a HashTable
Just a comment: if the OP used a HashTable, there would be no duplication
issue because
myHashTable(val ue)=value
adds it if it isn't there already, and overwrites it if it is there.
Andrew
Like this
Dim Ht As New Hashtable()
Dim dummyArr() As Integer = {100, 1, 2, 3, 4, 5, 6, 7, 8, 9, 0, 100,
100, 3, 0, 4, 5, 5}
For Each val As Integer In dummyArr
Ht(val) = val
Next
'proove that all items are filtered
For Each val As Integer In Ht.Values
Debug.WriteLine (val)
Next
regards
Michel
"Andrew Morton" wrote:
Phill W. wrote:
cmdolcet69 wrote:
Im trying to compare arrayindex slots in a array. I have an arraylist
of size (n) and once all the arraylist slots are filled i would like
to compare each slot so that they are all unique number.
No. Check for uniqueness as you /add/ each item - if it's already
present, don't add another one.
I can't recall if the ArrayList has a Contains() method; if not, you
may have to use a Dictionary-type class, say a HashTable
Just a comment: if the OP used a HashTable, there would be no duplication
issue because
myHashTable(val ue)=value
adds it if it isn't there already, and overwrites it if it is there.
Andrew
On Sep 6, 7:03 am, "Andrew Morton" <a...@in-press.co.uk.inv alid>
wrote:
cmdolcet69 wrote:
On Sep 6, 4:05 am, "Andrew Morton" <a...@in-press.co.uk.inv alid>
wrote:
cmdolcet69 wrote:
Im trying to compare arrayindex slots in a array. I have an
arraylist of size (n) and once all the arraylist slots are filled
*That's* the time to do the checking: when you're adding entries. If
the value already exists in the arraylist then don't add it.
>i would like
to compare each slot so that they are all unique number.
How would i do that check what code could i place in the existing code
would do that check for me.
Completely untested - check the syntax in the help:
' only add the new element if it is unique
If Not(myArrayList .Contains(newEl ement)) then
myArrayList.Add (newElement)
End If
Andrew
If there are a lot of items in the array list it might help to keep
them in a Dictionary as well to facilitate a quicker check. This thread has been closed and replies have been disabled. Please start a new discussion. Similar topics | |
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