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  1. #include <iostream>
  2. #include <vector>
  3. #include <set>
  4. #include <algorithm>
  5.  
  6. std::vector<int> split( int v )
  7. {
  8.     std::vector<int> r;
  9.     while( v ) {
  10.         r.push_back( v % 10 );
  11.         v /= 10;
  12.     }
  13.     return r;
  14. }
  15.  
  16. int main()
  17. {
  18.     int target = 1234;
  19.     int guess = 1783;
  20.  
  21.     auto targetv = split( target );
  22.     auto guessv = split( guess );
  23.  
  24.     auto bulls = std::count_if( guessv.begin(), guessv.end(),
  25.             [it = targetv.begin()]( int i ) mutable 
  26.         { return i == *it++; }  );
  27.  
  28.     auto cows  = std::count_if( guessv.begin(), guessv.end(),
  29.             [s = std::set<int>{ targetv.begin(), targetv.end() }]( int i ) 
  30. 	    { return s.count( i ); }  );
  31.  
  32.     cows -= bulls;
  33.  
  34.     std::cout << "bulls:" << bulls << " cows:" << cows << std::endl;
  35.     return 0;
  36. }
Success #stdin #stdout 0s 4188KB
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Standard input is empty
stdout
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bulls:1 cows:1
https://ideone.com/4BCKwO
language:
C++14 (clang 8.0)
created:
8 years ago
visibility:
public

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