How to remove duplicate XML nodes using XSLT

Question

I've got an extremely long XML file, like context1 test1 context1 context2 test2 context2 ........... Now I want to remove all the second in each using xslt, is it possible? The result would be like this: context1 test1 context2 test2 ........... Thank u, BR Allen JavaScript questions and answers, JavaScript questions pdf, JavaScript question bank, JavaScript questions and answers pdf, mcq on JavaScript pdf, JavaScript questions and solutions, JavaScript mcq Test , Interview JavaScript questions, JavaScript Questions for Interview, JavaScript MCQ (Multiple Choice Questions)

Answer 1

This question requires a little bit more detailed answer than just pointing to a good Muenchian Grouping source. The reason is that the needed grouping requires to identify both the names of all children of an "ele[SomeString]" element and their parent. Such grouping requires to define a key that is uniquely defined by both unique sources, usually via concatenation. This transformation: when applied on this XML document: context1 test1 context1 context2 test2 context2 context2 test2 context1 produces the wanted result: context1 test1 context2 test2 context2 context1