1 files changed, 35 insertions, 0 deletions
diff --git a/challenge-329/ulrich-rieke/cpp/ch-1.cpp b/challenge-329/ulrich-rieke/cpp/ch-1.cpp
new file mode 100755
index 0000000000..6a275089ea
--- /dev/null
+++ b/challenge-329/ulrich-rieke/cpp/ch-1.cpp
@@ -0,0 +1,35 @@
+#include <string>
+#include <vector>
+#include <regex>
+#include <iostream>
+#include <set>
+using namespace std::string_literals ;
+
+int main( ) {
+   std::cout << "Enter a word with lowercase English letters and digits!\n" ;
+   std::string word ;
+   std::cin >> word ;
+   auto rx = std::regex( R"((\d+))"s ) ;
+   std::vector<std::string> numberstrings ;
+   auto end = std::sregex_token_iterator {} ;
+   for ( auto it = std::sregex_token_iterator(std::begin( word ) , 
+	    std::end( word ) , rx ) ; it != end ; ++it ) {
+      numberstrings.push_back( *it ) ;
+   }
+   std::vector<int> numbers ;
+   for ( auto s : numberstrings ) 
+      numbers.push_back( std::stoi( s ) ) ;
+   std::set<int> uniques { numbers.begin( ) , numbers.end( ) } ;
+   std::vector<int> solution ;
+   for ( int n : numbers ) {
+      if ( uniques.contains( n ) ) {
+	 solution.push_back( n ) ;
+	 uniques.erase( uniques.find( n ) ) ;
+      }
+   }
+   for ( int n : solution ) {
+      std::cout << n << ' ' ;
+   }
+   std::cout << '\n' ;
+   return 0 ;
+}