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class Solution {
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 public:
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  vector<int> shuffle(vector<int> &nums, int n) {
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    vector<int> ans;
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    int size = nums.size();
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    int i = 0, j = 0;
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    for (i = 0, j = n; i < n && j < size; i++, j++) {
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      ans.push_back(nums[i]);
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      ans.push_back(nums[j]);
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    }
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    return ans;
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  }
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};