- Added solutions by Ulrich Rieke.

2 files changed, 73 insertions, 0 deletions

diff --git a/challenge-135/ulrich-rieke/cpp/ch-1.cpp b/challenge-135/ulrich-rieke/cpp/ch-1.cpp
new file mode 100644
index 0000000000..098d1b7fee
--- /dev/null
+++ b/challenge-135/ulrich-rieke/cpp/ch-1.cpp
@@ -0,0 +1,28 @@
+#include <iostream>
+#include <string>
+#include <regex>
+
+int main( int argc, char * argv[] ) {
+  std::string input { argv[ 1 ] } ;
+  std::string checkRegex( "(^[+-]*\\d+$)" ) ;
+  std::regex checkReg( checkRegex ) ;
+  while ( ! std::regex_match( input , checkReg ) ) {
+      std::cout << "Input should consist of possible signs and digits only!\n" ;
+      std::getline( std::cin , input ) ;
+  }
+  int len = input.length( ) ;
+  if ( ( len == 4 ) ) {
+      std::string start { input.substr( 0 , 1 ) } ;
+      if ( (start == "+") || ( start == "-" ) )
+    std::cout << input.substr( 1 ) << std::endl ;
+  }
+  else {
+      if ( len % 2 == 0 )
+    std::cout << "even number of digits" << std::endl ;
+      if ( ( len < 3 ) && (  len % 2 != 0 ))
+    std::cout << "too short" << std::endl ;
+      if ( ( len % 2 != 0 ) && ( len > 3 ) )
+    std::cout << input.substr( ( len - 3 ) / 2 , 3 ) << std::endl ;
+  }
+  return 0 ;
+}
diff --git a/challenge-135/ulrich-rieke/cpp/ch-2.cpp b/challenge-135/ulrich-rieke/cpp/ch-2.cpp
new file mode 100644
index 0000000000..03be87e9a2
--- /dev/null
+++ b/challenge-135/ulrich-rieke/cpp/ch-2.cpp
@@ -0,0 +1,45 @@
+#include <iostream>
+#include <string>
+#include <regex>
+#include <cctype>
+#include <algorithm>
+#include <array>
+
+int main( int argc , char * argv[ ] ) {
+  std::string sedol { argv[ 1 ] } ;
+  bool valid = false ;
+  if ( sedol.length( ) != 7 ) {
+      std::cout << 0 << std::endl ;
+      return 1 ;
+  }
+  std::transform( sedol.begin( ) , sedol.end( ) , sedol.begin( ) ,
+    toupper ) ;
+  std::string checkReg ("(^\\w+$)" ) ;
+  std::regex checkRegex( checkReg ) ;
+  std::string anotherCheck ("([AEIOU])") ;
+  std::regex vowelCheck( anotherCheck ) ;
+  if ( (! ( std::regex_match( sedol , checkRegex ))) ||
+    ( std::regex_match( sedol , vowelCheck ) ) ) {
+      std::cout << 0 << std::endl ;
+      return 2  ;
+  }
+  std::array<int, 7> weights {{ 1, 3 , 1 , 7 , 3 , 9 , 1 }} ;
+  int sum = 0 ;
+  for ( int i = 0 ; i < 6 ; i++ ) {
+      int value = static_cast<int>( sedol[ i ] ) ;
+      if ( isupper( value )) {
+    sum += (value - 55) * weights[ i ]  ;
+      }
+      else {
+    int value = std::stoi( sedol.substr( i , 1 ) ) ;
+    sum += value * weights[ i ] ;
+      }
+  }
+  std::string letterStr {sedol.substr( 6 , 1 )} ;
+  if ( std::stoi( letterStr ) == ( (10 - ( sum % 10 )) % 10 )) {
+      std::cout << 1 << std::endl ;
+  }
+  else
+      std::cout << 0 << std::endl ;
+  return 0 ;
+}