xslt move attributes in child as element to parent node - xslt

Question

I want to move my child nodes attributes as element to parent.
for ex.
Change the below xml
<Parent>
<Children>
<Child key="Name">ABC</Child>
<Child key="Age">8</Child>
<Child key="Height">140</Child>
<Child key="Class">6</Child>
</Children>
</Parent>
to
<Parent>
<Name>ABC</Name>
<Age>8</Age>
<Height>140</Height>
<Class>6</Class>
</Parent>
Hope my question is clear..

Answer 1

<xsl:template match="Parent">
<xsl:copy>
<xsl:apply-templates select="Children/Child"/>
</xsl:copy>
</xsl:template>
<xsl:template match="Children/Child[#key]">
<xsl:element name="{#key}">
<xsl:value-of select="."/>
</xsl:element>
</xsl:template>
<xsl:output indent="yes"/>
should suffice.

Answer 2

This compete and short transformation:
<xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
<xsl:output omit-xml-declaration="yes" indent="yes"/>
<xsl:strip-space elements="*"/>
<xsl:template match="/*">
<Parent>
<xsl:apply-templates/>
</Parent>
</xsl:template>
<xsl:template match="Child">
<xsl:element name="{#key}"><xsl:apply-templates/></xsl:element>
</xsl:template>
</xsl:stylesheet>
when applied on the provided XML document:
<Parent>
<Children>
<Child key="Name">ABC</Child>
<Child key="Age">8</Child>
<Child key="Height">140</Child>
<Child key="Class">6</Child>
</Children>
</Parent>
produces the wanted, correct result:
<Parent>
<Name>ABC</Name>
<Age>8</Age>
<Height>140</Height>
<Class>6</Class>
</Parent>