Hai
I have an xml which of this format
<?xml version="1.0" encoding="UTF-8"?>
<group>
<article-ref rid="doi-ANTI_1995-63-2_001-1"/>
<group>
<title>America</title>
<group>
<title>Pakistan</title>
<group>
<title>India</title>
<article-ref rid="doi-ANTI_1995-63-2_001-2"/>
</group>
</group>
</group>
<article-ref rid="doi-ANTI_1995-63-2_001-3"/>
<group>
<title>SYMPOSIUM: POST-CHICAGO ECONOMICS</title>
<article-ref rid="doi-ANTI_1995-63-2_001-4"/>
<article-ref rid="doi-ANTI_1995-63-2_001-5"/>
<article-ref rid="doi-ANTI_1995-63-2_001-6"/>
<article-ref rid="doi-ANTI_1995-63-2_001-7"/>
<article-ref rid="doi-ANTI_1995-63-2_001-8"/>
<article-ref rid="doi-ANTI_1995-63-2_001-9"/>
<article-ref rid="doi-ANTI_1995-63-2_001-10"/>
<article-ref rid="doi-ANTI_1995-63-2_001-11"/>
<article-ref rid="doi-ANTI_1995-63-2_001-12"/>
<article-ref rid="doi-ANTI_1995-63-2_001-13"/>
</group>
<article-ref rid="doi-ANTI_1995-63-2_001-14"/>
</group>
This xml need be converted to the following output format
</group>
<group>
<group>
<title><![CDATA[America]]></title><group>
<title><![CDATA[Pakistan]]></title><group>
<title><![CDATA[India]]></title>
<article-ref rid="001-2"/>
</group>
</group>
</group>
</group>
<group>
<article-ref rid="001-3"/>
</group>
<group>
<group>
<title><![CDATA[SYMPOSIUM: POST-CHICAGO ECONOMICS]]></title>
<article-ref rid="001-4"/>
<article-ref rid="001-5"/>
<article-ref rid="001-6"/>
<article-ref rid="001-7"/>
<article-ref rid="001-8"/>
<article-ref rid="001-9"/>
<article-ref rid="001-10"/>
<article-ref rid="001-11"/>
<article-ref rid="001-12"/>
<article-ref rid="001-13"/>
</group>
</group>
<group>
<article-ref rid="001-14"/>
</group>
I could not able to get an idea where to start from. so can any one kindly suggest me what to do on this.