suffle-array.js

/*

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


*/

var shuffle = function(nums, n) {
    let x =  nums.slice(0 , n)
    let y = nums.slice(n)

    let arr = []

    for(let i = 0 ; i < x.length; i++){
        arr.push(x[i])
        arr.push(y[i])
    }

    return arr

};