Need a little VB.Net help -2

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Random Number Generator
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Continues thread Need a little VB.Net help and previous lost thread

We need a VB programmer to turn my rough shot at a function into VB.Net and put it through it's paces to see how it works, code is below in discussion.

 .. earlier thread question Need a little VB.Net help. TheFinder was attempting to find a good solution to a lottery number picking problem. He needed to pick 6 numbers, each from 1 to 50 but no two duplicating. The six numbers had to total to a target value input by the user as the six digits of an earlier lottery ticket. I developed an algorithm (in GetSix below) that I believe will give a quick and simple solution to the problem. Unfortunately, I’m not VB.Net adept and I don’t have VB. If someone would like to fix up this code and give us a little idea of the performance (time and/or number of loops), that would be interesting.



Software/Hardware used:
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  • philpl1jb
    Public Function GetSix(ByVal I1 As Integer, ByVal I2 As Integer, ByVal I3 As Integer, _
                           ByVal I4 As Integer, ByVal I5 As Integer, ByVal I6 As Integer, _
                           ByRef N1 As Integer, ByRef N2 As Integer, ByRef N3 As Integer, _
                           ByRef N4 As Integer, ByRef N5 As Integer, ByRef N6 As Integer, _
                           ByRef CountLoop As Integer) As Boolean
    
    Dim Success As Boolean = True
    Dim rnd1 As New Random()
    Dim target As Integer 
    Dim maxTries As Integer= 25000
    Dim maxTriesRule5 As Integer = 15000
    Dim Rule1, Rule2, Rule3, Rule4, Rule5 as Boolean
    Dim Rule4N1, Rule4N2, Rule4N3, Rule5N4, Rule5N5, RuleN6 = 0
    
    CountLoop = 0
    target = I1 + I2 + I3 + I4 + I5 + I6
    
    If target < 21 ot target > 285 then
        return false
    endif
    
    
    
    Do Until CountLoop > maxTries or Success
    
      ‘Loop
      CountLoop += 1  
    
      N1 = rnd1.next(MAX( target - 240, 1), MIN( 50, target - 15) + 1 )
      N2 = rnd1.next(MAX( target - N1 - 194, 1), MIN(50, target - 10 - N1) + 1)
      N3 = rnd1.next(MAX( target - N1 - N2 - 147, 1), MIN(50, target - 6 - N1 - N2) + 1)
      N4 = rnd1.next(MAX( target - N1 - N2 - N3 - 99, 1), MIN(50, target - 3 - N1 - N2 - N3) +1)
      N5 = rnd1.next(MAX( target - N1 - N2 - N3 - N4 - 50, 1), MIN(50, target - 1 - N1 - N2 - N3 - N4) +1)
      N6 = MAX( target - (N1 + N2 + N3 + N4 + N5), 1)
    
      '----Rule 1, total of the inputs should equal the total of the outputs
      Rule1 = (I1 + I2 + I3 + I4 + I5 + I6) = (N1 + N2 + N3 + N4 + N5 + N6)
    
      '----Rule 2, N1, N2, N3, N4, N5, N6 must all be different
      If Rule1 then
      Rule2 =(N1 <> N2 And N1 <> N3 And N1 <> N4 And N1 <> N5 And _
              N1 <> N6 And N2 <> N3 And N2 <> N4 And N2 <> N5 And _
              N2 <> N6 And N3 <> N4 And N3 <> N5 And N3 <> N6 And _
              N4 <> N5 And N4 <> N6 And N5 <> N6)
      Endif
    
      '----  Rule 3, N1 - N6 must be between 1 and 50
      Rule3 = N6 > 0 and N6 <=50
    
      '---- Rule 4, any digit cannot appear in the same location on the output as on the input N1 not equal to I1, N2 not equal to I2 
      if Rule1 and Rule2 and Rule3 then
         Rule4 = (N1 <> I1 and N2 <> I2 and N3 <> I3 and N4 <> I4 and N5 <> I5 and N6 <> I6
      Endif
    
      '---- Rule 5, any digit cannot appear in the list if this is possible
      if Rule1 and Rule3 and Rule3 and Rule4 and CountLoop < maxTriesRule5 then
         
         Rule5 =(N1 <> I2 And N1 <> I3 And N1 <> I4 And N1 <> I5 And N1 <> I6 And_
                 N2 <> I1 And N2 <> I3 And N2 <> I4 And N2 <> I5 AND N2 <> I6 And_
                 N3 <> I1 And N3 <> I2 And N3 <> I4 And N3 <> I5 And N3 <> I6 And_
                 N4 <> I1 And N4 <> I2 And N4 <> I3 And N4 <> I5 And N4 <> I6 And_
                 N5 <> I1 And N5 <> I2 And N5 <> I3 And N5 <> I4 And N5 <> I6 And_
                 N6 <> I1 And N6 <> I2 And N6 <> I3 And N6 <> I4 And N6 <> I6 )
      Endif
    
      '---- test success
      If   (Rule1 and Rule2 and Rule3 and Rule4 and Rule5) then
        or (Rule1 and Rule2 and Rule3 and Rule4 and LoopCount> maxTriesRule5 )
        Success = True
      Else 
        Success = False then
        If (Rule1 and Rule2 and Rule3 and Rule4) then  '--- save good rule 4 answer
           Rule4N1 = N1
           Rule4N2 = N2
           Rule4N3 = N3
           Rule4N4 = N4
           Rule4N5 = N5
           Rule4N6 = N6
        Endif
      Endif
      If LoopCount > maxTriesRule5 and Rule4N1 <> 0 then '--- exhausted rule 5 use rule 4 answer
           N1 = Rule4N1
           N2 = Rule4N2
           N3 = Rule4N3
           N4 = Rule4N4
           N5 = Rule4N5
           N6 = Rule4N6
           Success = True    
      Endif
    Loop
    loop
    Return Success
    End Function
    
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  • philpl1jb
    no edit on discussion here is a change Rule4N1 .. N6 are of type Integer .. Dim Rule4N1, Rule4N2, Rule4N3, Rule5N4, Rule5N5, RuleN6 As Integer = 0
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