Balanced brackets: Difference between revisions
Content added Content deleted
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[[][[[[[]] is Not Balanced.</pre> |
[[][[[[[]] is Not Balanced.</pre> |
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Antother version not using libraries. The generator works as intended |
Antother version not using libraries. The generator works as intended (more difficult to do than the checking) |
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<lang vb> |
<lang vb> |
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option explicit |
option explicit |
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if bal then s="[":cnt=1 else s="":cnt=0 |
if bal then s="[":cnt=1 else s="":cnt=0 |
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for i=1 to 20 |
for i=1 to 20 |
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if (rnd>0.7) then r=not r |
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if not r then |
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s=s+"[" :cnt=cnt+1 |
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else |
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if not bal or (bal and cnt>0) then s=s+"]":cnt=cnt-1 |
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end if |
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next |
next |
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if bal and cnt<>0 then s=s&string(cnt,"]") |
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if not bal and cnt=0 then s=s&"]" |
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do_brackets=s |
do_brackets=s |
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end function |
end function |
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dim s1,i,cnt: cnt=0 |
dim s1,i,cnt: cnt=0 |
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for i=1 to len(s) |
for i=1 to len(s) |
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s1=mid(s,i,1) |
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if s1="[" then cnt=cnt+1 |
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if s1="]" then cnt=cnt-1 |
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if cnt<0 then isbalanced=false:exit function |
if cnt<0 then isbalanced=false:exit function |
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next |
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isbalanced=(cnt=0) |
isbalanced=(cnt=0) |
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end function |
end function |
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for i=1 to 10 |
for i=1 to 10 |
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bal=(rnd>.5) |
bal=(rnd>.5) |
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s=do_brackets(bal) |
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bb=isbalanced(s) |
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wscript.echo iif (bal,"","un")& "balanced string " &vbtab _ |
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& s & vbtab & " Checks as " & iif(bb,"","un")&"balanced" |
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next |
next |
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</lang> |
</lang> |
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