Merge branch 'master' of https://github.com/manwar/perlweeklychallenge-club

1 files changed, 48 insertions, 0 deletions

diff --git a/challenge-226/ulrich-rieke/cpp/ch-2.cpp b/challenge-226/ulrich-rieke/cpp/ch-2.cpp
new file mode 100755
index 0000000000..d80e8da2a5
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+++ b/challenge-226/ulrich-rieke/cpp/ch-2.cpp
@@ -0,0 +1,48 @@
+#include <iostream>

+#include <string>

+#include <vector>

+#include <algorithm>

+

+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 mySubtr( int n , int min ) {

+   n -= min ;

+   if ( n < 0 ) 

+      n = 0 ;

+   return n ;

+}

+

+int main( ) {

+   std::cout << "Enter some positive integers, separated by blanks!\n" ;

+   std::string line ;

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

+   std::vector<std::string> numberstrings ( split ( line , " " ) ) ;

+   std::vector<int> numbers ;

+   for ( auto s : numberstrings ) {

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

+   }

+   int rounds = 0 ;

+   while ( ! std::all_of( numbers.begin( ) , numbers.end( ) , []( int n ) {

+	    return n == 0 ; } ) ) {

+      std::vector<int> positives ;

+      std::copy_if( numbers.begin( ) , numbers.end( ) , std::back_inserter(

+	       positives ) , []( int i ) { return i > 0 ; } ) ;

+      int mini = *std::min_element( positives.begin( ) , positives.end( ) ) ;

+      rounds++ ;

+      std::transform( numbers.begin( ) , numbers.end( ) , numbers.begin( ) , 

+	    [mini]( int i ) { return mySubtr( i , mini ) ; } ) ;

+   }

+   std::cout << rounds << std::endl ;

+   return 0 ;

+}