urgent..creating loops in output xml based on input xml values..

Hi all,
I am new to the whole xsl world and I have trouble
creating an xsl. This is urgent and I have less time
to do research. so plz help me with this asap.
This is my requirement,
 
the input xml will be in this format,
 
<root>
    <name>1</name>
    <name>2</name>
    <name>3</name>
    <name>1</name>
    <name>2</name>
    <name>1</name>
</root>
 
The possible values for name are only 1,2 and 3. I
should supply an xsl which will be used to transform
this xml into another xml in the following format,
 
<root>
  <Loop>
        <name>1</name>
        <Loop>
            <name>2</name>
            <Loop>
                <name>3</name>
            </Loop>
        </Loop>
    </Loop>
    <Loop>
        <name>1</name>
        <Loop>
            <name>2<name>
        </Loop>
    </Loop>
    <Loop>
        <name>1</name>
  </Loop>  
</root>
 
In the input xml, there will not be a 2 without 1
preceding it. similarly there wont be a 3 without a 2
preceding it. But there could be more than one 1 or 2
or 3, one after the other. Here's another example,
 
<root>
    <name>1</name>
    <name>2</name>
    <name>2</name>
</root>
 
Here the output will be
<root>
    <Loop>
        <name>1</name>
        <Loop>
            <name>2</name>
        </Loop>
        <Loop>
            <name>2</name>
        </Loop>
    </Loop>
</root>
 
I thought of using the following algorithm to
determine when to open a loop element and when to
close a loop,
 
declare variables L1 = no, L2 = no and L3 = no
For each <root> in output xml
{
    If (name = 1)
    {
        If (L3 = yes) then in output xml, close loop
"</Loop>
        If (L2 = yes) then in output xml, close loop
"</Loop>
        If (L1 = yes) then in output xml, close loop
"</Loop>
        Open Loop in output xml "<Loop>"
    }
    If (name = 2)
    {
        If (L3 = yes) then in output xml, close loop
"</Loop>
        If (L2 = yes) then in output xml, close loop
"</Loop>
        Open Loop in output xml "<Loop>"
    }
    If (name = 3)
    {
        If (L3 = yes) then in output xml, close loop
"</Loop>
        Open Loop in output xml "<Loop>"
    }
}
 
But here, since variable values once assigned cannot
be reassigned, I am not able to implement this algo.
in xsl. Help me with some other logic  that will be
able to achieve the same. (all I want here is to do
the following, there will be an input xml file where
all elements are in the same level. In the output
file, I want these elements nested one inside another,
based on their values.). Thanks in advance for ur
help.
-mahe


                
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