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  1. #include <iostream>
  2. #include <map>
  3. #include <algorithm>
  4. using namespace std;
  5.  
  6. int main()
  7.   {
  8.    int data[]={1, 2, 3, 4, 1, 2, 3, 4, 1, 1, 2, 5, 12, 5};
  9.    map<int,unsigned> tb;
  10.    for(size_t i=0;i<sizeof(data)/sizeof(*data);++i) ++tb[data[i]];
  11.    for(map<int,unsigned>::iterator i=tb.begin();i!=tb.end();++i) if(i->second==2) cout<<i->first<<endl;
  12.    return 0;
  13.   }
Success #stdin #stdout 0s 3432KB
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https://ideone.com/majmfL
language:
C++14 (gcc 8.3)
created:
9 years ago
visibility:
public

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