From ed251006b89063380df4e9ed19bee441bfb9c36c Mon Sep 17 00:00:00 2001
From: Mohammad Sajid Anwar <mohammad.anwar@yahoo.com>
Date: Wed, 12 Nov 2025 15:06:20 +0000
Subject: - Added solutions by Ali Moradi. - Added solutions by Ulrich Rieke.

---
 challenge-347/ulrich-rieke/cpp/ch-2.cpp | 70 +++++++++++++++++++++++++++++++++
 1 file changed, 70 insertions(+)
 create mode 100755 challenge-347/ulrich-rieke/cpp/ch-2.cpp

(limited to 'challenge-347/ulrich-rieke/cpp/ch-2.cpp')

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 ;
+}
-- 
cgit