1470. Shuffle the Array

https://leetcode.com/problems/shuffle-the-array

Description

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].

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:

• 1 <= n <= 500

• nums.length == 2n

• 1 <= nums[i] <= 10^3

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