- Added solutions by Ali Moradi.

- Added solutions by Ulrich Rieke.

1 files changed, 70 insertions, 0 deletions

diff --git a/challenge-347/ulrich-rieke/cpp/ch-2.cpp b/challenge-347/ulrich-rieke/cpp/ch-2.cpp
new file mode 100755
index 0000000000..af3c310c05
--- /dev/null
+++ b/challenge-347/ulrich-rieke/cpp/ch-2.cpp
@@ -0,0 +1,70 @@
+#include <string>

+#include <iostream>

+#include <regex>

+#include <vector>

+using namespace std::string_literals ;

+

+std::string handleRest( const std::string & rest ) {

+    std::string result ;

+    char dash = '-' ;

+    int len = static_cast<int>( rest.length( ) ) ;

+    if ( len == 2 || len == 3 ) {

+         result = rest ;

+    }

+    else {

+        result = rest.substr(0 , 2 ) ;

+        result.append(1, dash ) ;

+        result += rest.substr( 2 ) ;

+    }

+    return result ;

+}

+

+void printParts( const std::vector<std::string> & parts ) {

+    if ( parts.size( ) == 1 ) 

+        std::cout << *parts.begin( ) << '\n' ;

+    else {

+        char dash { '-' } ;

+        std::string result ;

+        for ( auto s : parts ) {

+            result += s ;

+            result.append(1, dash ) ;

+        }

+        result.pop_back( ) ;

+        std::cout << result << '\n' ;

+    }

+}

+

+int main( ) {

+    std::cout << "Enter a phone number consisting of digits , spaces and dashes only!\n" ;

+    std::string phonenumber ;

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

+    auto rx = std::regex{ R"(\s|\-)"s} ;

+    std::string reduced = std::regex_replace( phonenumber , rx , ""s ) ;

+    int len = static_cast<int>( reduced.length( ) ) ;

+    if ( len <= 4 ) {

+        std::cout << handleRest( reduced ) << '\n' ;

+    }

+    else {

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

+        int partnumber = len / 3 ;

+        int lengthrest = len % 3 ;

+        if ( lengthrest != 0 && lengthrest < 2 ) 

+            partnumber-- ;

+        int pos = 0 ;

+        int i = 0 ;

+        while ( i < partnumber ) {

+            parts.push_back( reduced.substr( pos , 3 ) ) ;

+            pos += 3 ;

+            i++ ;

+        }

+        int restlen = len - partnumber * 3 ;

+        if ( restlen == 0 ) 

+            printParts( parts ) ;

+        else {

+            std::string rest { reduced.substr( partnumber * 3 ) } ;

+            parts.push_back( handleRest( rest )) ;

+            printParts( parts ) ;

+        }

+    }

+    return 0 ;

+}