1 files changed, 62 insertions, 0 deletions
diff --git a/challenge-242/ulrich-rieke/cpp/ch-2.cpp b/challenge-242/ulrich-rieke/cpp/ch-2.cpp
new file mode 100755
index 0000000000..d40538699d
--- /dev/null
+++ b/challenge-242/ulrich-rieke/cpp/ch-2.cpp
@@ -0,0 +1,62 @@
+#include <vector>
+#include <iostream>
+#include <algorithm>
+#include <string>
+
+std::vector<std::string> split( const std::string & startline ,
+      const std::string & sep ) {
+   std::vector<std::string> separated ;
+   std::string::size_type start { 0 } ;
+   std::string::size_type pos ;
+   do {
+      pos = startline.find_first_of( sep , start ) ;
+      separated.push_back( startline.substr(start , pos - start )) ;
+      start = pos + 1 ;
+   } while ( pos != std::string::npos ) ;
+   return separated ;
+}
+
+int myFlip( int num ) {
+   if (num == 0 ) 
+      return 1 ;
+   else
+      return 0 ;
+}
+
+int main( ) {
+   std::cout << "Enter some 0 or 1 , separated by blanks!\n" ;
+   std::string line ;
+   std::getline( std::cin , line ) ;
+   std::vector<std::vector<int>> matrix ;
+   std::vector<std::string> numberstrings( split( line , " " ) ) ;
+   int len = numberstrings.size( ) ;
+   std::vector<int> numbers ;
+   for ( auto s : numberstrings )
+      numbers.push_back( std::stoi( s ) ) ;
+   matrix.push_back( numbers ) ;
+   for ( int i = 0 ; i < len - 1 ; i++ ) {
+      std::cout << "Please enter " << len << " numbers of 0 or 1 , " 
+	 << "separated by blanks!\n" ;
+      std::getline( std::cin , line ) ;
+      numberstrings = split( line , " " ) ;
+      numbers.clear( ) ;
+      for ( auto s : numberstrings ) 
+	 numbers.push_back( std::stoi( s ) ) ;
+      matrix.push_back( numbers ) ;
+   }
+   std::transform( matrix.begin( ) , matrix.end( ) , matrix.begin( ) ,
+	 []( auto & vec ) { std::reverse( vec.begin( ) , vec.end( ) ) ;
+	 return vec ; } ) ;
+   std::transform( matrix.begin( ) , matrix.end( ) , matrix.begin( ) ,
+	 []( auto & vec ) { std::transform( vec.begin( ) , vec.end( ) , 
+	    vec.begin( ) , myFlip ) ; return vec ; } ) ;
+   std::cout << "(" ;
+   for ( auto & vec : matrix ) {
+      std::cout << "( " ;
+      for ( int i : vec ) 
+	 std::cout << i << " " ;
+      std::cout << ")" ;
+   }
+   std::cout << ")\n" ;
+   return 0 ;
+}