delete value in array of byte

[kirubagari]

How about the deletion function.i just modify the insert function to delete function.is it correct.actualy i would like to delete if 04 FF 04 FF (got repeating value) i would like to delete one of the 04 FF.So can i use the function that i modify .The same thing i wana do as insert function but i wana delete this time the condition is if there is repeating value as i mentioned just now.

Public Function DeleteByte(pmArray() As Byte, pmPosition As Long, ByVal pmNewValue As Byte)
' Function to delete a new byte value into a byte array.
Dim ArrayStart As Long, ArrayEnd As Long
Dim I As Long
ArrayStart = LBound(pmArray)
ArrayEnd = UBound(pmArray) -1
' Expand array to make room for the new value.
ReDim Preserve pmArray(ArrayStart To ArrayEnd)
' If requested position is outside the array, just stick it
' at the start or end as appropriate.
If pmPosition < ArrayStart Then
pmPosition = ArrayStart
End If
If pmPosition > ArrayEnd Then
pmPosition = ArrayEnd
End If
' Unless adding to the end of the array,
' push everything across to make room.
If pmPosition < ArrayEnd Then
For I = ArrayEnd To pmPosition -1 Step -1
pmArray(I) = pmArray(I - 1)
Next
End If
pmArray(pmPosition) = pmNewValue
End Function

[Killer42]

I don't think the code is quite right. But before we get into the code, I'd like you to try and state fairly simply, the method to be used. In other words, can you describe to me, in a fairly simple overview, how you would go about removing a value from the middle of an array?

Turning it into code is quite simple, and we'll get that done quite quickly. But first you have to understand what you're trying to code.

I'll give you a hint. It's not the same sort of process as inserting. If you start by shortening the array, you've just thrown away whatever was at the end of it.

[kirubagari]

Actualy are u saying that it is not possible to delete the byte in the middle of array.My problem is now

 04 FF 89 67 87 90 89 04 FF 04 FF 
89 65 67 78 93 78 78 89 84 67 04
 

i wana delete one of the repeating 04 FF in the array of byte.is it possible in vb?

[kirubagari]

Actualy when i insert one i have delete one of the 04 FF value in my program

The arrangement of array sometime like 04 FF 04 FF.So when i insert one 04 FF,i should delete one 04 FF.so i have to find the position where should i delete,sowhen there is repeating value like 04 FF 04 FF ,so i wana delete 1 of the 04 FF.So i have to check until EOF to find out the location to be deleted.So i think it will be explain problem more clear.

[Killer42]

Certainly it's possible to remove a value from the middle of an array. I'd just like you to think about how you would go about removing one from somewhere in the middle.

You might try thinking of the array as a row of boxes, or something similar. What would be the steps involved in taking one out of the middle and not leaving a gap? If you can explain that in detail, you will be very close to writing the code for it.

(Note, here I'm just talking about the actual removal of a byte. This has nothing to do with deciding what byte to remove.)

[kirubagari]

 
 
04 FF F2 03 37 04 04 FF- F1 03 37 04 04 FF F0 03
37 04 04 FF EF 03 37 04 - 04 FF 04 FF EE 03 37 04
04 FF ED 03 37 04 04 FF- EC 03 37 04 04 FF EB 03
 
 

For eg i wana find out where the repeating value of 04 FF 04 FF occur,then i wana delete one of the 04 FF
then i wana merge the array.

 
 
04 FF F2 03 37 04 04 FF - F1 03 37 04 04 FF F0 03
37 04 04 FF EF 03 37 04 - 04 FF EE 03 37 04 04 FF
ED 03 37 04 04 FF EC 03 - 37 04 04 FF EB 03 89 67
 
 
 

This is i wana do after the insertion and do deletion also.How to start?Wana check until EOF and do deletion as the location where there is repeating structure

[Killer42]

You keep jumping ahead. I'm still trying to get you to spell out how you would go about removing a byte from an array. Let's get working tools before we try to use them, huh?

[kirubagari]

sir so how if u give a function that delete byte from array as u give me as insertion function.Like delete a value from array of byte as starting so that i can understand more[/font]

[kirubagari]

how to delete a value from a byte of array.like HELLO.i wana delete the 2nd value.How i can do in vb

[Killer42]

how to delete a value from a byte of array.like HELLO.i wana delete the 2nd value.How i can do in vb

Now that I think about if further, if you are just looking to replace duplicated strings, I think it will be much simpler to work with a string. You probably won't need the "delete a byte" routine.

Let's assume, for the sake of argument, that you have read your file into string variable strText, instead of a byte array. I think the Replace() function might do the fix for you, all in one go, like so...

Dim strLookFor As String, strChangeTo As String
strChangeTo = Chr$(&H04) & Chr$(&HFF)
strLookFor = strChangeTo & strChangeTo
strFile = Replace(strFile, strLookFor, strChangeTo)