std::unique_copy is an STL algorithm similar to std::copy except that it copies identical adjacent values once.

Download the Qt Creator project 'CppUnique_copy' (zip)


#include <cassert>

#include <algorithm>

#include <vector>



int main()

{

  std::vector<int> v;

  v.push_back(0);

  v.push_back(1);

  v.push_back(1);

  v.push_back(2);

  v.push_back(2);

  v.push_back(2);

  v.push_back(3);

  v.push_back(3);

  v.push_back(3);

  v.push_back(3);

  std::vector<int> w;

  std::unique_copy(v.begin(),v.end(),std::back_inserter(w));

  assert(w[0]==0);

  assert(w[1]==1);

  assert(w[2]==2);

  assert(w[3]==3);

}

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(C++) std::unique_copy