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Shuffle the Array

Tags : leetcode, array, cpp, easy

Problem Statement - link #

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].

Examples #

Example 1:

Input: nums = [2,5,1,3,4,7], n = 3
Output: [2,3,5,4,1,7] 
Explanation: Since x1=2, x2=5, x3=1, y1=3, y2=4, y3=7 then the answer is [2,3,5,4,1,7].

Example 2:

Input: nums = [1,2,3,4,4,3,2,1], n = 4
Output: [1,4,2,3,3,2,4,1]

Example 3:

Input: nums = [1,1,2,2], n = 2
Output: [1,2,1,2]

Constraints #

Solutions #


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[n+i]);
        }
        return res;
    }
};