i am facing problem in arraylist handling .

Question

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i have a string mstr. i store its unicode values in an arraylist called (arr).
i want to check if the next element in the array list is a unicode of some defined category.(0942,0943)etc then there should be no insertion of zero, but if
the category is not found i want to insert a zero in the array but am not able to iterate the loop correctly.
example:
input arraylist as (arr) =[0915, 092C,0942, 0924,0930] ; output arraylist as =[0915;0000, 092C,0942, 0924;0000,0930;0000]

VB

For Each myCh As Char In mStr
                 he = Hex((System.Convert.ToInt32(myCh)))
                 arr.Add(he)
                 CharPos.X += 15
             Next
             Dim k As Integer = arr.Count
             For i1 = 0 To k

                 If arr(i1) = &quot;93E&quot; Or arr(i1) = &quot;93F&quot; Or arr(i1) = &quot;940&quot; Or arr(i1) = &quot;941&quot; Or arr(i1) = &quot;942&quot; Or arr(i1) = &quot;947&quot; Or arr(i1) = &quot;948&quot; Or arr(i1) = &quot;94B&quot; Or arr(i1) = &quot;94C&quot; Or arr(i1) = &quot;902&quot; Or arr(i1) = &quot;903&quot; Or arr(i1) = 0 Then
                     arr(i1) = arr(i1)

                 Else
                     arr.Insert(i1 + 1, 0)
                     k = k + 1
                 End If
                 i1 = i1 + 1

             Next

[edit]Code block fixed - OriginalGriff[/edit]

Posted 5-Feb-12 22:30pm

zoyakhan

Updated 5-Feb-12 22:35pm

OriginalGriff

v2

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CPallini 6-Feb-12 5:06am

Why don't you work directly with Chars?

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Sergey Alexandrovich Kryukov · Accepted Answer · 2012-02-05T22:54:00

I see three problems so far:

You iterate 0 to k but you cannot, because the element #k does not exist. You are trying to repeat the loop k+1 times while you have only k elements. 1) Don't use such should variable names; 2) count 0 to k-1; 3) don't do it at all; use foreach.

Don't use ArrayList; it is rendered obsolete by introduction of generics in .NET Framework v. 2.0. For new development, use System.Collections.Generic.List and other generic collections. Non-generic classes are bad; you will need a type cast, which is a bad thing. Please see:
http://msdn.microsoft.com/en-us/library/6sh2ey19.aspx[^],
http://msdn.microsoft.com/en-us/library/system.collections.generic.aspx[^].

Finally, I don't see where do you iterate through character of each string.

—SA