fork download
copy 
  1. #include <iostream>
  2. #include <vector>
  3. #include <algorithm>
  4. #include <iterator>
  5. #include <fstream>
  6.  
  7. using namespace std;
  8.  
  9. void readSet(vector<int>& v, istream_iterator<int>& input) {
  10.     int size = *input++;
  11.     while (size--) {
  12.         v.push_back(*input++);
  13.     }
  14. }
  15.  
  16. int main() {
  17.     ifstream file("plik.txt");
  18.     if (!file.is_open()) {
  19.         return 1;
  20.     }
  21.  
  22.     istream_iterator<int> input(file);
  23.     vector<int> a, b;
  24.     readSet(a, input);
  25.     readSet(b, input);
  26.  
  27.     sort(a.begin(), a.end());
  28.     sort(b.begin(), b.end());
  29.  
  30.     vector<int> intersection;
  31.     set_intersection(
  32.         a.begin(), a.end(),
  33.         b.begin(), b.end(),
  34.         back_inserter(intersection)
  35.     );
  36.  
  37.     cout << "Ilosc powtarzajacych sie: " << intersection.size() << "\n";
  38.     cout << "Liczby:\n";
  39.     copy(
  40.         intersection.begin(),
  41.         intersection.end(),
  42.         ostream_iterator<int>(cout, "\n")
  43.     );
  44.     return 0;
  45. }
Runtime error #stdin #stdout 0s 3028KB
comments (?)
stdin
copy 
4

11 22 33 44

3

11 222 22
stdout
copy 
Standard output is empty
https://ideone.com/EqEMsW
language:
C++14 (gcc 8.3)
created:
11 years ago
visibility:
public

Share or Embed source code

Discover > Sphere Engine API

The brand new service which powers Ideone!

Discover > IDE Widget

Widget for compiling and running the source code in a web browser!