Original interval in .NET framework

Generate QR Code ISO/IEC18004 in .NET framework Original interval

Original interval
QR Code Scanner In VS .NET
Using Barcode Control SDK for .NET Control to generate, create, read, scan barcode image in .NET framework applications.
QR-Code Generator In VS .NET
Using Barcode printer for .NET framework Control to generate, create QR-Code image in .NET applications.
Left subinterval
Quick Response Code Recognizer In .NET Framework
Using Barcode decoder for VS .NET Control to read, scan read, scan image in VS .NET applications.
Bar Code Creator In .NET Framework
Using Barcode drawer for .NET Control to generate, create bar code image in VS .NET applications.
Right subinterval
Barcode Recognizer In Visual Studio .NET
Using Barcode decoder for .NET Control to read, scan read, scan image in Visual Studio .NET applications.
Create QR In Visual C#.NET
Using Barcode printer for Visual Studio .NET Control to generate, create QR Code 2d barcode image in VS .NET applications.
Fig. 9.46
Create QR-Code In Visual Studio .NET
Using Barcode drawer for ASP.NET Control to generate, create QR-Code image in ASP.NET applications.
Make Denso QR Bar Code In VB.NET
Using Barcode maker for .NET framework Control to generate, create QR Code image in .NET framework applications.
Because the computational strategy is somewhat complicated, we present a detailed program outline. First, however, let us define the following variables.
Drawing EAN 13 In Visual Studio .NET
Using Barcode generator for Visual Studio .NET Control to generate, create EAN13 image in .NET applications.
Making Barcode In Visual Studio .NET
Using Barcode printer for .NET framework Control to generate, create barcode image in VS .NET applications.
OldFile = the name of the random access data file (States.dat) State.Name = the name of the state contained in the record State. State.Capital = the name of the state capital contained in the record State. Target = the uppercase equivalent of the desired state (or the first few letters of the state) Current = the uppercase equivalent of the state in the current record (or the first few letters of the state) RecordNumber = the current record number First = pointer to the first record in the current search interval Last = pointer to the last record in the current search interval
Bar Code Generation In .NET Framework
Using Barcode generator for .NET framework Control to generate, create bar code image in Visual Studio .NET applications.
Drawing International Standard Serial Number In Visual Studio .NET
Using Barcode generator for .NET framework Control to generate, create International Standard Serial Number image in Visual Studio .NET applications.
The computation will proceed as follows. 1. 2. Type the name of the desired state into a text box. The uppercase equivalent of the state name will be assigned to Target. Prior to the first search, select and open the random access data file containing the list of state names and state capitals. (This should only be done once.)
Universal Product Code Version A Printer In None
Using Barcode creator for Online Control to generate, create UPC-A Supplement 2 image in Online applications.
Generating Barcode In Objective-C
Using Barcode generation for iPhone Control to generate, create barcode image in iPhone applications.
CHAP. 9]
Making UPCA In None
Using Barcode printer for Software Control to generate, create UPC-A image in Software applications.
EAN 13 Maker In Visual Basic .NET
Using Barcode maker for VS .NET Control to generate, create GTIN - 13 image in Visual Studio .NET applications.
DATA FILES
Printing Code 128C In None
Using Barcode maker for Online Control to generate, create USS Code 128 image in Online applications.
UPC Code Encoder In Visual C#
Using Barcode printer for .NET framework Control to generate, create UPC-A Supplement 2 image in .NET framework applications.
3. 4.
EAN 128 Drawer In None
Using Barcode generator for Software Control to generate, create UCC-128 image in Software applications.
Code-39 Recognizer In VS .NET
Using Barcode decoder for .NET Control to read, scan read, scan image in VS .NET applications.
Assign 1 to First and the quantity LOF(1) / Len(State) to Last. These assignments define the initial search interval. (Note that LOF(1) / Len(State) represents the number of the last record.) Carry out the binary search as follows. (a) Determine the record at the middle of the search interval and assign its record number to RecordNumber. (b) Locate the middle record and read the values of the state name and the state capital. Then assign the uppercase equivalent of the leftmost characters of the state name to Current. (c) If Current = Target, the desired state has been located. Hence, display the state capital and end the binary search routine. (d) If Current > Target, the desired state will be located in the first half of the search interval. Hence, define a new subinterval by assigning RecordNumber 1 to Last and repeat this step. (e) Otherwise (i.e., if Current > Target), the desired state will be located in the last half of the search interval. Hence, define a new subinterval by assigning RecordNumber + 1 to First and repeat this step. (f) If the search interval has been narrowed down to one remaining record (First = Last), then read the state name and the state capital from this record and assign the uppercase equivalent of the leftmost characters of the state name to Current. (i) If Current = Target, the desired state has been located. Hence, display the state capital and end the binary search routine.
(ii) Otherwise, display an error message indicating that the desired state cannot be found. Then end the binary search routine. To implement this strategy in Visual Basic, we will utilize two text boxes (one for the name of the state, the other for the capital) and three command buttons (to initiate the search, clear the text boxes, and end the computation). Fig. 9.47 shows the initial control layout. We will assign appropriate properties to the controls so that the form appears as in Fig. 9.48 when the program is executed.
Fig. 9.47
AM FL Y
Team-Fly
Fig. 9.48
Here is the complete Visual Basic code listing, including the property assignments.
Private Type StateRecord Name As String * 15 Capital As String * 15 End Type
(Continues on next page)
DATA FILES
[CHAP. 9
Private Sub Form_Load() Form1.Caption = "State Capitals" Label1.Caption = "Finding a State Capital" Label1.FontSize = 12 Label1.Alignment = 2 'center text Label1.Tag = 0 'Set up data file selection Label2.Caption = "State:" Label2.FontSize = 10 Label3.Caption = "Capital:" Label3.FontSize = 10 Label3.Enabled = False Text1.Text = "" Text1.FontSize = 10 Text2.Text = "" Text2.FontSize = 10 Text2.Enabled = False Command1.Caption = "Find" Command1.FontSize = 10 Command2.Caption = "Clear" Command2.FontSize = 10 Command3.Caption = "Quit" Command3.FontSize = 10 End Sub
Private Sub Command1_Click() Dim State As StateRecord Dim OldFile As String, Target As String If Label1.Tag = 0 Then CommonDialog1.CancelError = True On Error GoTo CancelButton CommonDialog1.Filter = "Data file (*.dat) |*.dat" CommonDialog1.ShowOpen OldFile = CommonDialog1.FileName Open OldFile For Random As #1 Len = Len(State) Label1.Tag = 1 'disable data file selection End If Target = UCase(Text1.Text) Call Search(Target) CancelButton: Exit Sub End Sub
Private Sub Command2_Click() Text1.Text = "" Text2.Text = "" Text2.Enabled = False Label3.Enabled = False End Sub
(Continues on next page)
CHAP. 9]
Copyright © OnBarcode.com . All rights reserved.