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  1. #include <bits/stdc++.h>
  2. using namespace std;
  3.  
  4. int main() {
  5. 	// your code goes here
  6. 	int n;
  7. 	cin>>n;
  8. 	int t[n];
  9. 	vector <int> a,b;
  10. 	for (int i=0;i<n;i++){
  11. 		cin>>t[i];
  12. 	}
  13. 	sort(t,t+n);
  14. 	for (int i=0;i<n;i++){
  15. 		if (i%2==0){
  16. 			a.push_back(t[i]);
  17. 		}
  18. 		else {
  19. 			b.push_back(t[i]);
  20. 		}
  21. 	}
  22. 	int na=a.size(),nb=b.size();
  23. 	reverse(b.begin(),b.end());
  24. 	for (int i=0;i<na;i++){
  25. 		cout<<a[i]<<' ';
  26. 	}
  27. 	for (int i=0;i<nb;i++){
  28. 		cout<<b[i]<<' ';
  29. 	}
  30. 	return 0;
  31. }
Success #stdin #stdout 0s 4296KB
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stdin
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3
30 10 20
stdout
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10 30 20
https://ideone.com/fLLehD
language:
C++14 (gcc 8.3)
created:
4 years ago
visibility:
public

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