by N. K. Velu (2 Submissions)
Category: Math/Dates
Compatability: VB 6.0
Difficulty: Unknown Difficulty
Originally Published: Wed 4th October 2000
Date Added: Mon 8th February 2021
Rating: 
(1 Votes)
Generates unique non repeating random numbers within a range
VBcoders
button. Unique random numbers between 1 and 15 will be displayed.
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Private Sub cmdDisplay_Click()
Static count As Integer
Dim intNum As Integer
ReDim Preserve arrNum15(1 To 15) As Integer
count = count + 1
Randomize
intNum = Int((15 * Rnd) + 1) ' a random number between 1
' and 15 is generated
If count <> 1 Then
'This loop compares all the previous random numbers to the currently
'generated one to see whether it already exists. if so a new one is generated.
For i = 1 To count - 1
Do Until arrNum15(i) <> intNum
If arrNum15(i) = intNum Then
intNum = Int((15 * Rnd) + 1)
i = 1 'to start checking from array element 1
End If
Loop
Next i
End If
arrNum15(count) = intNum ' assign value to the appropriate array element
If count = 15 Then
count = 0
Print "*************"
Exit Sub
End If
Print intNum ' to print the numbers on the form
End Sub
