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  1. #include <iostream>
  2. #include <vector>
  3. using namespace std;
  4.  
  5. typedef pair<vector<int>, vector<int>> pvivi;
  6.  
  7. pvivi findMissingAndDup(int a[], int len) {
  8. 	vector<int> missing, dup;
  9. 	for (int i = 0; i < len; i++) {
  10. 		while (a[a[i]] != a[i])
  11. 			swap(a[i], a[a[i]]);
  12. 	}
  13.  
  14. 	for (int i = 0; i < len; i++) {
  15. 		if (a[i] != i) {
  16. 			missing.push_back(i);
  17. 			dup.push_back(a[i]);
  18. 		}
  19. 	}
  20. 	return make_pair(missing, dup);
  21. }
  22.  
  23. int main() {
  24. 	int a[] = {0, 5, 3, 3, 4, 5};
  25. 	pvivi p = findMissingAndDup(a, sizeof(a)/sizeof(a[0]));
  26. 	vector<int> vm = p.first;
  27. 	vector<int> vd = p.second;
  28. 	cout << "Missing: ";
  29. 	for (int i:vm) cout<<i<<" ";
  30. 	cout << "\nDup: ";
  31. 	for (int i:vd) cout<<i<<" ";
  32. 	// your code goes here
  33. 	return 0;
  34. }
Success #stdin #stdout 0s 3480KB
comments (?)
stdin 
Standard input is empty
stdout 
Missing: 1 2 
Dup: 5 3
https://ideone.com/jYyCVt
language:
C++14 (gcc 8.3)
created:
10 years ago
visibility:
public

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