Initial data commit

Task/XML-Input/Ruby/xml-input.rb

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+require 'rexml/document'
+include REXML
+
+doc = Document.new(File.new("sample.xml"))
+# or
+# doc = Document.new(xml_string)
+
+# without using xpath
+doc.each_recursive do |node|
+  puts node.attributes["Name"] if node.name == "Student"
+end
+
+# using xpath
+doc.each_element("*/Student") {|node| puts node.attributes["Name"]}