- Added solutions by Eric Cheung.

- Added solutions by Ulrich Rieke.
- Added solutions by Mark Anderson.
- Added solutions by David Ferrone.
- Added solutions by Ali Moradi.
- Added solutions by Niels van Dijke.
- Added solutions by Peter Pentchev.
- Added solutions by E. Choroba.
- Added solutions by Peter Meszaros.
- Added solutions by Thomas Kohler.
- Added solutions by W. Luis Mochan.
- Added solutions by BarrOff.

1 files changed, 42 insertions, 0 deletions

diff --git a/challenge-308/ulrich-rieke/cpp/ch-2.cpp b/challenge-308/ulrich-rieke/cpp/ch-2.cpp
new file mode 100755
index 0000000000..8a80cf6fc5
--- /dev/null
+++ b/challenge-308/ulrich-rieke/cpp/ch-2.cpp
@@ -0,0 +1,42 @@
+#include <iostream>

+#include <string>

+#include <sstream>

+#include <vector>

+

+std::vector<std::string> split( const std::string & text , char delimiter ) {

+   std::vector<std::string> tokens ;

+   std::istringstream istr { text } ;

+   std::string word ;

+   while ( std::getline( istr , word , delimiter ) ) {

+      tokens.push_back( word ) ;

+   }

+   return tokens ;

+}

+

+int main( ) {

+   std::cout << "Enter some numbers separated by whitespace!\n" ;

+   std::string line ;

+   std::getline( std::cin , line ) ;

+   auto tokens { split( line , ' ' ) } ;

+   std::vector<int> encoded ;

+   for ( auto s : tokens ) 

+      encoded.push_back( std::stoi( s ) ) ;

+   std::cout << "Enter an initial integer!\n" ;

+   int initial ;

+   std::cin >> initial ;

+   std::vector<int> decoded ;

+   decoded.push_back( initial ) ;

+   //to find x in a xor x = b you can do a xor b since xor is its own 

+   //inverse function!

+   for ( auto it = encoded.begin( ) ; it != encoded.end( ) ; ++it ) {

+      int last = decoded[decoded.size( ) - 1] ;

+      decoded.push_back( last ^ *it ) ;

+   }

+   std::cout << "( " ;

+   for ( int i : decoded ) {

+      std::cout << i << ' ' ;

+   }

+   std::cout << ")\n" ;

+   return 0 ;

+}

+