深圳易高科技有限公司面试题目

RecruitmentQuiz

PaperA

PrepareBy

2GoTradeLtd.

Version: 1.0

6 Jan 2006

Pleasecompletethefollowing 8 questionswithin 2 hours.

Question 1

TheVB function ,GetCurrencyCodedemonstratesthetranslationbetweenthecurrencycode and currencynumber.However,theperformanceofthis function is not goodenough;thehigherorderof input numbertakesmuchmoretimes to calculate.Pleasesuggestaway to improvetheprogramperformance:

Function GetCurrencyCode( ByVal input As String ) As String

If input = " 01 " Then

return = " AFA "

ElseIf input = " 02 " Then

return = " ALL "

ElseIf input = " 03 " Then

return = " DZD "

ElseIf input = " 04 " Then

return = " USD "

ElseIf input = " 05 " Then

return = " HKD "

ElseIf input = " 75 " Then

return = " EUR "

ElseIf input = " 76 " Then

return = " XCD "

ElseIf input = " 77 " Then

return = " AMD "

End If

EndFunction

Answer:

Function GetCurrencyCode( ByVal input As String ) As String Select Case input Case " 01 " :

return = " AFA " Case " 02 " :

return = " ALL " Case " 03 " :

return = " DZD " Case " 04 " :

return = " USD " Case " 05 " :

return = " HKD "

Case " 75 " :

return = " EUR "

Case " 76 " :

return = " XCD "

Case " 77 " :

return = " AMD "

Case Else :

return = " unknown " End Select EndFunction

Question 2

Write a function thatreversestheorderofthewords in a string . For instance,your function shouldtransformthe string “ Do or do not ,there is no try .” To “ try .No is there not , do or Do ”.Assumethatallwordsare space delimited and treatpunctuationthesame as letters.

Useyourmosthands - on programminglanguage.

Answer:

JavaScriptVersion:

function ReversesOrder()

{

varOldStr = " Doordonot,thereisnotry. "

varNewStr = "" ;

varArrayStr = OldStr.split( " " );

for (vari = ArrayStr.length - 1 ;i >= 0 ;i -- )

{

NewStr += ArrayStr[i] + " " ;

}

return NewStr;

}

Question 3

StudythefollowingVBprogram:

Imports System

Imports System.IO

Module Module1

Public ArtList As ArrayList

EndModule

Public Class Form1

Inherits System.Windows.Forms.Form

WindowsFormDesignergeneratedcode

< [Serializable]() > Public Class Art

Public Title As String

Public Des As String

Public Value As Integer

Public Price As Double

Public Picture As String

EndClass

Private Sub Button1_Click_1( ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click

Dim myArt As New Object

Dim hashtable As New Collections.Hashtable

Dim key As String

Try

myArt = New Art

With myArt

.Title = " Title "

.Des = " Desc "

.Value = 123

.Price = 321.05

End With

key = myArt.Title & myArt.Des & CStr (myArt.Value) & CStr (myArt.Price)

hashtable.Add(key,myArt)

ArtList.Add(myArt)

Catch ex As Exception ' Thisistheline94’

MsgBox (ex.Message & vbCrLf & ex.StackTrace)

End Try

EndSub

EndClass

Aform is created on whichabuttoncontrol is placed.WhentheButton1_Click is fired,amessagebox is popup:

What is theproblem and how to fix it?

Answer:

Question 4

In thefollowingVBprogram,pleasestatesanypotentialproblem(s) and how to correct.

Private Sub btnCalc_Click()

Dim result As Integer

Try

Me .Cursor = Windows.Forms.Cursors.WaitCursor

result = Convert.ToInt32(txtInput1.Text) / Convert.ToInt32(txtInput2.Text)

txtResult.Text = result

Me .Cursor = Windows.Forms.Cursors.Default

Catch ex As Exception

MsgBox (ex.StackTrace)

Catch ex As ArgumentNullException

MsgBox ( " InputTestboxcannotbenull. " )

Catch ex As OverflowException

MsgBox ( " InputTestbox2cannotbezero! " )

Catch ex As FormatException

MsgBox ( " InputTestboxshouldbenumericformat! " )

End Try

EndSub

Answer:

Question 5

GetRecordset() is aVB function thatreturnsaADODB.Recordset object :

Ref_IDQtyPrice

Row 0 00123 1000 60.50

Row 1 00123 2000 60.00

Row 2 00123 3500 59.50

Row 3 00124 3000 60.50

Row 4 00125 2000 59.50

Row 5 00125 1000 58.00

(Thisrecordset is sortedbyRef_ID)

Thefollowingprogram

Dim rst as ADODB.Recordset

Rst = GetRecordset

Do While Not rst.EOF

Console.writeline(rst.Fields( " Ref_ID " ) & vbcrlf & rst.Fields( " Qty " ) & vbcrlf & rst.Fields( " Price " ))

rst.MoveNext()

Loop

Cangeneratethefollowingoutput:

Output:

00123 1000 60.50

00123 2000 60.00

00123 3500 59.50

00124 3000 60.50

00125 2000 59.50

00125 1000 58.00

Pleasesuggesthow to modifytheaboveprogram to generatethefollowingoutput:

Output:

00123

1000 60.50

2000 60.00

3500 59.50

---- -----

6500 60.00

00124

3000 60.50

---- -----

3000 60.50

00125

2000 59.50

1000 58.00

---- --

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