lz78.frm

解压后可以在vb中运行

VERSION 5.00
Begin VB.Form Form1 
   Caption         =   "Form1"
   ClientHeight    =   7140
   ClientLeft      =   3600
   ClientTop       =   3180
   ClientWidth     =   6945
   LinkTopic       =   "Form1"
   ScaleHeight     =   7140
   ScaleWidth      =   6945
   Begin VB.TextBox Text3 
      Height          =   375
      Left            =   2040
      TabIndex        =   11
      Text            =   "Text3"
      Top             =   5040
      Width           =   3255
   End
   Begin VB.ListBox List3 
      Height          =   2400
      ItemData        =   "lz78.frx":0000
      Left            =   4440
      List            =   "lz78.frx":0002
      TabIndex        =   8
      Top             =   1680
      Width           =   855
   End
   Begin VB.ListBox List2 
      Height          =   2400
      ItemData        =   "lz78.frx":0004
      Left            =   3000
      List            =   "lz78.frx":0006
      TabIndex        =   7
      Top             =   1680
      Width           =   1215
   End
   Begin VB.ListBox List1 
      Height          =   2400
      ItemData        =   "lz78.frx":0008
      Left            =   1680
      List            =   "lz78.frx":000A
      TabIndex        =   6
      Top             =   1680
      Width           =   1095
   End
   Begin VB.CommandButton Command4 
      Caption         =   "清空字典"
      Height          =   375
      Left            =   3480
      TabIndex        =   5
      Top             =   6000
      Width           =   1095
   End
   Begin VB.CommandButton Command3 
      Caption         =   "重   构"
      Height          =   375
      Left            =   1800
      TabIndex        =   4
      Top             =   6000
      Width           =   1215
   End
   Begin VB.TextBox Text2 
      Height          =   375
      Left            =   2040
      MaxLength       =   500
      TabIndex        =   3
      Text            =   "Text2"
      Top             =   4440
      Width           =   3255
   End
   Begin VB.CommandButton Command2 
      Caption         =   "退   出"
      Height          =   375
      Left            =   5160
      TabIndex        =   2
      Top             =   6000
      Width           =   1095
   End
   Begin VB.CommandButton Command1 
      Caption         =   "编   码"
      Height          =   375
      Left            =   360
      TabIndex        =   1
      Top             =   6000
      Width           =   1095
   End
   Begin VB.TextBox Text1 
      Height          =   375
      Left            =   1920
      MaxLength       =   500
      TabIndex        =   0
      Text            =   "Text1"
      Top             =   600
      Width           =   3255
   End
   Begin VB.Label Label3 
      Caption         =   "压缩比"
      BeginProperty Font 
         Name            =   "宋体"
         Size            =   12
         Charset         =   134
         Weight          =   400
         Underline       =   0   'False
         Italic          =   0   'False
         Strikethrough   =   0   'False
      EndProperty
      Height          =   255
      Left            =   840
      TabIndex        =   12
      Top             =   5040
      Width           =   735
   End
   Begin VB.Label Label2 
      Caption         =   "重构显示"
      BeginProperty Font 
         Name            =   "宋体"
         Size            =   12
         Charset         =   134
         Weight          =   400
         Underline       =   0   'False
         Italic          =   0   'False
         Strikethrough   =   0   'False
      EndProperty
      Height          =   255
      Left            =   840
      TabIndex        =   10
      Top             =   4440
      Width           =   975
   End
   Begin VB.Label Label1 
      Caption         =   " 原 码"
      BeginProperty Font 
         Name            =   "宋体"
         Size            =   12
         Charset         =   134
         Weight          =   400
         Underline       =   0   'False
         Italic          =   0   'False
         Strikethrough   =   0   'False
      EndProperty
      Height          =   255
      Left            =   960
      TabIndex        =   9
      Top             =   720
      Width           =   735
   End
End
Attribute VB_Name = "Form1"
Attribute VB_GlobalNameSpace = False
Attribute VB_Creatable = False
Attribute VB_PredeclaredId = True
Attribute VB_Exposed = False
Dim num As Integer
Dim d(30, 4) As String
Dim p As String

Private Sub Command1_Click()
Dim a As Integer, b As Integer, k As Integer, output As Integer
Dim code As String
Dim c As String

output = 0
p = ""
num = 1
code = Trim(Text1.Text)
a = Len(code)
If a > 0 Then
For i = 1 To 30
       c = Mid(code, i, 1)
       p = p + c
       k = 0
    For j = 1 To 30
        If StrComp(p, d(j, 2)) = 0 Then
          k = 1
          output = j
        End If
    Next j
     If k <> 1 Then
        d(num, 1) = num
        d(num, 2) = p
        d(num, 3) = output
        d(num, 4) = c
        p = ""
        output = 0
        num = num + 1
     End If
 Next i
 For i = 1 To num
    List1.AddItem d(i, 1)
   List2.AddItem d(i, 2)
   List3.AddItem d(i, 3) & d(i, 4)
 Next i
 Text3.Text = (a * 2) / ((num - 1) * 3) & "：1"
 Else
 MsgBox "请输入原码", 48, "请确认"
 End If
End Sub
Private Sub Command2_Click()
Unload Form1
Unload Form2
End Sub
Private Sub Command3_Click()
Dim h(30, 4) As String
Dim cd As String
cd = ""
For i = 1 To num
   For j = 1 To 4
   h(i, j) = d(i, j)
Next j
Next i
For k = 1 To 30
cd = cd & h(Val(d(k, 3)), 2) & h(k, 4)
Next k
cd = cd & p
Text2.Text = cd
End Sub

Private Sub Command4_Click()
List1.Clear
List2.Clear
List3.Clear
For i = 1 To num
   For j = 1 To 4
  d(i, j) = ""
Next j
Next i
Text1.Text = ""
Text2.Text = ""
Text3.Text = ""
List1.AddItem "位置"
List2.AddItem "字典"
List3.AddItem "输出"
End Sub

Private Sub Form_Load()
List1.AddItem "位置"
List2.AddItem "字典"
List3.AddItem "输出"
Text1.Text = ""
Text2.Text = ""
Text3.Text = ""
End Sub