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gezelter | 
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#include <iostream> | 
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#include <stdlib.h> | 
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#include "SkipList.hpp" | 
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SkipList* SkipList::_instance = 0; | 
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SkipList* SkipList::Instance() { | 
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  if (_instance == 0) { | 
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    _instance = new SkipList; | 
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  } | 
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  return _instance; | 
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} | 
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SkipList::SkipList(){    | 
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} | 
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SkipList::~SkipList() { | 
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  delete _instance; | 
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} | 
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void SkipList::addAtom(int i) { | 
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  if (!hasAtom(i))  | 
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    skipSet.insert(i); | 
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} | 
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void SkipList::printMe( void ){ | 
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  set<int>::iterator  i; | 
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  int index; | 
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  index = 0; | 
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  for(i = skipSet.begin(); i != skipSet.end(); ++i) {    | 
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    std::cerr << "SkipList[" << index << "] i: " << *i << "\n"; | 
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    index++;   | 
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  }   | 
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} | 
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int SkipList::hasAtom(int i) { | 
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  set<int>::iterator  position; | 
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  position = skipSet.find(i); | 
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  if (position != skipSet.end())  | 
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    return 1; | 
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  else | 
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    return 0; | 
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} | 
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int SkipList::getSize() { | 
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  return skipSet.size(); | 
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} |