12.4 Conditional and Repetitive Processing

<?xml version="1.0" encoding="UTF-8" ?>
    <xsl:stylesheet version="1.0"
       xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
>

  <xsl:template match="list" >
     <even-odd>
        <xsl:apply-templates />
     </even-odd>
  </xsl:template>

  <xsl:template match="num" >
     <xsl:choose>
        <xsl:when test=" (number() mod 2) = 0">
           <even>
             <xsl:apply-templates />
           </even>
        </xsl:when>
        <xsl:otherwise>
           <odd>
              <xsl:apply-templates />
           </odd>
        </xsl:otherwise>
     </xsl:choose>
  </xsl:template>

</xsl:stylesheet>

<?xml version="1.0" encoding="UTF-8"?>
<even-odd>
   <odd>11</odd>
   <even>32</even>
   <even>14</even>
   <odd>23</odd>
</even-odd>