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Attribute VB_Name = "ModTask_02"
Option Explicit
Function GetMatrixPath(RngFill As Range, ByRef nMinCost As Integer)
Dim nMatrixSize As Integer, nCntLoop As Integer
Dim nSubLoop As Integer, nCheckLoop As Integer
Dim nArrCnt() As Integer, nArrPath() As Integer
Dim bArrTempUsed() As Boolean, bArrCheck() As Boolean
Dim nCost As Integer
Dim bPathValid As Boolean, bFirstPath As Boolean
Dim nLastPos As Integer
nMatrixSize = RngFill.Rows.Count
ReDim nArrCnt(1 To nMatrixSize)
ReDim nArrPath(1 To nMatrixSize)
ReDim bArrTempUsed(1 To nMatrixSize)
ReDim bArrCheck(1 To nMatrixSize)
'Initialize
nArrCnt(1) = 1
bFirstPath = True
nMinCost = 0
'''Loop
nCntLoop = 1
Do
Do While nArrCnt(nCntLoop) <= nMatrixSize
Do While nCntLoop < nMatrixSize
nCntLoop = nCntLoop + 1
nArrCnt(nCntLoop) = 1
Loop
'' ===== Check Path Is Valid =====
bPathValid = True
For nSubLoop = 1 To nMatrixSize
bArrTempUsed(nSubLoop) = False
Next nSubLoop
For nSubLoop = 1 To nMatrixSize
If bArrTempUsed(nArrCnt(nSubLoop)) Then
bPathValid = False
Exit For
Else
bArrTempUsed(nArrCnt(nSubLoop)) = True
End If
Next nSubLoop
'' ===== Check Path Is Valid =====
If bPathValid Then
nCost = 0
nLastPos = nArrCnt(1)
For nSubLoop = 1 To nMatrixSize
If nSubLoop = nMatrixSize Then
nCost = nCost + RngFill(nLastPos, nArrCnt(1))
Else
nCost = nCost + RngFill(nLastPos, nArrCnt(nSubLoop + 1))
nLastPos = nArrCnt(nSubLoop + 1)
End If
Next nSubLoop
If bFirstPath Or nCost < nMinCost Then
For nSubLoop = 1 To nMatrixSize
nArrPath(nSubLoop) = nArrCnt(nSubLoop)
Next nSubLoop
nMinCost = nCost
bFirstPath = False
End If
End If
nArrCnt(nCntLoop) = nArrCnt(nCntLoop) + 1
Loop
nCntLoop = nCntLoop - 1
nArrCnt(nCntLoop) = nArrCnt(nCntLoop) + 1
Loop Until nArrCnt(1) > nMatrixSize
GetMatrixPath = nArrPath
End Function
Private Sub Task_02_Func(rngToCheck As Range)
Dim arrResult
Dim nPathCost As Integer, nLoop As Integer
Dim strTourPath As String
If rngToCheck.Rows.Count <> rngToCheck.Columns.Count Then
Exit Sub
End If
arrResult = GetMatrixPath(rngToCheck, nPathCost)
For nLoop = LBound(arrResult) To UBound(arrResult)
If strTourPath <> "" Then
strTourPath = strTourPath & ", "
End If
strTourPath = strTourPath & Format(arrResult(nLoop) - 1, "0")
Next nLoop
strTourPath = strTourPath & ", " & Format(arrResult(1) - 1, "0")
strTourPath = "Min Cost: " & nPathCost & ", " & "Tour: " & strTourPath
MsgBox strTourPath
End Sub
Private Sub Task_02_GenTable(nNum)
Dim nLoop_01 As Integer, nLoop_02 As Integer
Dim rngPos As Range
Set rngPos = Range("B9")
For nLoop_01 = 1 To nNum
With rngPos.Offset(nLoop_01, 0)
.Value = nLoop_01 - 1
.HorizontalAlignment = xlCenter
End With
With rngPos.Offset(0, nLoop_01)
.Value = nLoop_01 - 1
.HorizontalAlignment = xlCenter
End With
For nLoop_02 = 1 To nNum
With rngPos.Offset(nLoop_01, nLoop_02)
.Value = Int((8 - 1 + 1) * Rnd + 1)
.HorizontalAlignment = xlCenter
End With
Next nLoop_02
Next nLoop_01
Task_02_Func Range(rngPos.Offset(1, 1), rngPos.Offset(nNum, nNum))
End Sub
Sub Task_02()
Task_02_Func Range("Rng_Task02")
End Sub
Sub Task_02_Bonus_1()
Dim varInputNum
Do
varInputNum = InputBox("Please enter a number", strMyTitle, 5)
If varInputNum = "" Then Exit Sub
Loop Until varInputNum > 1
Task_02_GenTable varInputNum
End Sub
Sub Task_02_Bonus_2()
Dim varInputNum
Do
varInputNum = InputBox("Please enter either 12 or 15", strMyTitle, 12)
If varInputNum = "" Then Exit Sub
Loop Until varInputNum = 12 Or varInputNum = 15
Task_02_GenTable varInputNum
End Sub
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