1470. Shuffle the Array

Given the array nums consisting of 2n elements in the form [x1,x2,…,xn,y1,y2,…,yn].

Return the array in the form [x1,y1,x2,y2,…,xn,yn].

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