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  1. #include <iostream>
  2. #include <list>
  3. using namespace std;
  4.  
  5. template <typename T>
  6. class Hybrid
  7. {
  8. public:
  9.     Hybrid() : m_activeStackSize(0) {}
  10.  
  11. private:
  12.     std::list<T> data;
  13.  
  14.     size_t m_activeStackSize;
  15.  
  16.     auto internal_peek() -> typename decltype(data)::iterator
  17.     {
  18.         if (m_activeStackSize) // peek from stack
  19.         {
  20.             typename decltype(data)::iterator itr = data.end();
  21.             std::advance(itr, -1);
  22.             return itr;
  23.         }
  24.         else //peek from queue
  25.         {
  26.             typename decltype(data)::iterator itr = data.begin();
  27.             return itr;
  28.         }
  29.     }
  30. };
  31.  
  32. int main() {
  33. 	// your code goes here
  34. 	return 0;
  35. }
Success #stdin #stdout 0s 3408KB
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https://ideone.com/3dj4Hl
language:
C++14 (gcc 8.3)
created:
8 years ago
visibility:
public

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