RosettaCodeData/Task/Non-continuous-subsequences/VBScript/non-continuous-subsequences.vb

34 lines
946 B
VB.net

'Non-continuous subsequences - VBScript - 03/02/2021
Function noncontsubseq(l)
Dim i, j, g, n, r, s, w, m
Dim a, b, c
n = Ubound(l)
For s = 0 To n-2
For g = s+1 To n-1
a = "["
For i = s To g-1
a = a & l(i) & ", "
Next 'i
For w = 1 To n-g
r = n+1-g-w
For i = 1 To 2^r-1 Step 2
b = a
For j = 0 To r-1
If i And 2^j Then b=b & l(g+w+j) & ", "
Next 'j
c = (Left(b, Len(b)-1))
WScript.Echo Left(c, Len(c)-1) & "]"
m = m+1
Next 'i
Next 'w
Next 'g
Next 's
noncontsubseq = m
End Function 'noncontsubseq
list = Array("1", "2", "3", "4")
WScript.Echo "List: [" & Join(list, ", ") & "]"
nn = noncontsubseq(list)
WScript.Echo nn & " non-continuous subsequences"