qq级别计算（查找算法）.frm

Visual Basic课程举例1 有很好的例题

VERSION 5.00
Begin VB.Form Form1 
   Caption         =   "查表应用之QQ级别计算"
   ClientHeight    =   3285
   ClientLeft      =   60
   ClientTop       =   345
   ClientWidth     =   6840
   LinkTopic       =   "Form1"
   ScaleHeight     =   3285
   ScaleWidth      =   6840
   StartUpPosition =   3  '窗口缺省
   Begin VB.CommandButton Command2 
      Caption         =   "输入时间算级别"
      BeginProperty Font 
         Name            =   "宋体"
         Size            =   12
         Charset         =   134
         Weight          =   400
         Underline       =   0   'False
         Italic          =   0   'False
         Strikethrough   =   0   'False
      EndProperty
      Height          =   435
      Left            =   120
      TabIndex        =   4
      Top             =   2400
      Width           =   1875
   End
   Begin VB.TextBox Text2 
      BeginProperty Font 
         Name            =   "宋体"
         Size            =   12
         Charset         =   134
         Weight          =   400
         Underline       =   0   'False
         Italic          =   0   'False
         Strikethrough   =   0   'False
      EndProperty
      Height          =   375
      Left            =   360
      TabIndex        =   3
      Top             =   1800
      Width           =   1035
   End
   Begin VB.CommandButton Command1 
      Caption         =   "输入级别算时间"
      BeginProperty Font 
         Name            =   "宋体"
         Size            =   12
         Charset         =   134
         Weight          =   400
         Underline       =   0   'False
         Italic          =   0   'False
         Strikethrough   =   0   'False
      EndProperty
      Height          =   435
      Left            =   120
      TabIndex        =   1
      Top             =   840
      Width           =   1935
   End
   Begin VB.TextBox Text1 
      BeginProperty Font 
         Name            =   "宋体"
         Size            =   12
         Charset         =   134
         Weight          =   400
         Underline       =   0   'False
         Italic          =   0   'False
         Strikethrough   =   0   'False
      EndProperty
      Height          =   435
      Left            =   300
      TabIndex        =   0
      Top             =   240
      Width           =   975
   End
   Begin VB.Line Line1 
      X1              =   0
      X2              =   6840
      Y1              =   1440
      Y2              =   1440
   End
   Begin VB.Label Label4 
      Appearance      =   0  'Flat
      BackColor       =   &H80000005&
      BeginProperty Font 
         Name            =   "宋体"
         Size            =   12
         Charset         =   134
         Weight          =   400
         Underline       =   0   'False
         Italic          =   0   'False
         Strikethrough   =   0   'False
      EndProperty
      ForeColor       =   &H80000008&
      Height          =   375
      Left            =   2280
      TabIndex        =   7
      Top             =   2580
      Width           =   4395
   End
   Begin VB.Label Label3 
      Appearance      =   0  'Flat
      BackColor       =   &H80000005&
      BeginProperty Font 
         Name            =   "宋体"
         Size            =   12
         Charset         =   134
         Weight          =   400
         Underline       =   0   'False
         Italic          =   0   'False
         Strikethrough   =   0   'False
      EndProperty
      ForeColor       =   &H80000008&
      Height          =   375
      Left            =   2280
      TabIndex        =   6
      Top             =   2100
      Width           =   4395
   End
   Begin VB.Label Label2 
      Appearance      =   0  'Flat
      BackColor       =   &H80000005&
      BeginProperty Font 
         Name            =   "宋体"
         Size            =   12
         Charset         =   134
         Weight          =   400
         Underline       =   0   'False
         Italic          =   0   'False
         Strikethrough   =   0   'False
      EndProperty
      ForeColor       =   &H80000008&
      Height          =   375
      Left            =   2280
      TabIndex        =   5
      Top             =   1620
      Width           =   4395
   End
   Begin VB.Label Label1 
      Appearance      =   0  'Flat
      BackColor       =   &H80000005&
      BeginProperty Font 
         Name            =   "宋体"
         Size            =   12
         Charset         =   134
         Weight          =   400
         Underline       =   0   'False
         Italic          =   0   'False
         Strikethrough   =   0   'False
      EndProperty
      ForeColor       =   &H80000008&
      Height          =   375
      Left            =   2220
      TabIndex        =   2
      Top             =   900
      Width           =   4455
   End
End
Attribute VB_Name = "Form1"
Attribute VB_GlobalNameSpace = False
Attribute VB_Creatable = False
Attribute VB_PredeclaredId = True
Attribute VB_Exposed = False
'查找算法运用实例：QQ级别计算
'Tencent公司自2005年8月15日起改为按活跃天计算级别
'具体规则为: 1级5天，2级5+7天，3级，5+7+9天，4级,...
'编制：曹新国，2005-8-20

Private Sub Command1_Click()
Dim level As Integer, I As Integer, Hours As Long, H As Long

level = Val(Text1.Text)

If level < 0 Or level > 255 Then
    Label1.Caption = "无效级别！请输入1到255间的整数"
    Exit Sub
End If

Hours = 0
H = 5
For I = 1 To level
    Hours = Hours + H
    H = H + 2
Next I
Label1.Caption = "升级到" & level & "级需要" & Hours & "天"
End Sub

Private Sub Command2_Click()
Dim Hours(0 To 255) As Long, H As Long, I As Integer
Dim level As Integer

H1 = 0
H = 5
For I = 0 To 255
    Hours(I) = H1
    H1 = H1 + H
    H = H + 2
Next I


level = 0
H = Val(Text2.Text)
If H < 0 Or H > Hours(255) Then Label2.Caption = "所给天数超出范围": Exit Sub

Do While Hours(level + 1) <= H
    level = level + 1
Loop

Label2.Caption = "经过" & H & "天可以达到" & level & "级"
Label3.Caption = String(level \ 16, "¤") + _
                 String((level Mod 16) \ 4, "◎") + _
                 String((level Mod 4), "☆")
Label4.Caption = "剩余升级时间为" & Hours(level + 1) - H & "天"

End Sub