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  1. #include <bits/stdc++.h>
  2. using namespace std;
  3.  
  4. class Solution {
  5. public:
  6.     vector<int> getConcatenation(vector<int>& nums) {
  7.         size_t n = nums.size();
  8.         vector<int>res(2*n);
  9.  
  10.         copy(nums.begin(), nums.end() , res.begin());
  11.         copy(nums.begin(), nums.end(), res.begin() + n);
  12.         return res;
  13.     }
  14. };
  15.  
  16. int main() {
  17. 	// your code goes here
  18. 	return 0;
  19. }
Success #stdin #stdout 0.01s 5308KB
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https://ideone.com/MKk9iv
language:
C++14 (gcc 8.3)
created:
3 days ago
visibility:
public

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