XSL for Xml to table transformation

Following up on my xslt question from yesterday, link found below.

first last element 2nd variation

I have to output the the first and last page number of each section into a table.

I'm puzzled on where to start. The XSLT 1.0 Solution and XSLT 2.0 Solution would be much appreciated. I would really appreciate any given help.

Regards JJ.

INPUT:

<root>
  <page number="1" section="Arsenal">Arsenal</page> 
  <page number="2" section="Arsenal">Arsenal</page> 
  <page number="3" section="Arsenal">Arsenal</page> 
  <page number="4" section="Arsenal">Arsenal</page> 
  <page number="5" section="Arsenal">Arsenal</page> 
  <page number="6" section="Arsenal">Arsenal</page> 
  <page number="7" section="Chelsea">Chelsea</page> 
  <page number="8" section="Chelsea">Chelsea</page> 
  <page number="9" section="Chelsea">Chelsea</page> 
  <page number="10" section="Chelsea">Chelsea</page> 
  <page number="11" section="Chelsea">Chelsea</page> 
  <page number="12" section="Chelsea">Chelsea</page> 
  <page number="13" section="ManUnited">ManUnited</page> 
  <page number="14" section="ManUnited">ManUnited</page> 
  <page number="15" section="ManUnited">ManUnited</page> 
  <page number="16" section="ManUnited">ManUnited</page> 
  <page number="17" section="ManUnited">ManUnited</page> 
  <page number="18" section="ManUnited">ManUnited</page> 
  <page number="19" section="ManCity">ManCity</page> 
  <page number="20" section="ManCity">ManCity</page> 
  <page number="21" section="ManCity">ManCity</page> 
  <page number="22" section="ManCity">ManCity</page> 
  <page number="23" section="ManCity">ManCity</page> 
  <page number="24" section="ManCity">ManCity</page> 
 </root>

OUTPUT:

<tr><td>1</td><td>Arsenal</td><td>6</td></tr>
<tr><td>7</td><td>Chelsea</td><td>12</td></tr>
<tr><td>13</td><td>ManU</td><td>18</td></tr>
<tr><td>19</td><td>Mancity</td><td>24</td></tr>

Use:

<xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
  <xsl:output method="xml" omit-xml-declaration="yes" indent="yes"/>

  <xsl:key name="k" match="page" use="@section"/>

  <xsl:template match="/root">
    <table>
      <xsl:apply-templates select="page[generate-id() = generate-id(key('k', @section))]"/>
    </table>
  </xsl:template>

  <xsl:template match="page">
    <tr>
      <td>
        <xsl:value-of select="@number"/>
      </td>
      <td>
        <xsl:value-of select="."/>
      </td>
      <td>
        <xsl:value-of select="key('k', @section)[last()]/@number"/>
      </td>
    </tr>
  </xsl:template>
</xsl:stylesheet>

Output:

<table>
  <tr>
    <td>1</td>
    <td>Arsenal</td>
    <td>6</td>
  </tr>
  <tr>
    <td>7</td>
    <td>Chelsea</td>
    <td>12</td>
  </tr>
  <tr>
    <td>13</td>
    <td>ManUnited</td>
    <td>18</td>
  </tr>
  <tr>
    <td>19</td>
    <td>ManCity</td>
    <td>24</td>
  </tr>
</table>