LeetCode: Sort Array By Parity Solution

Approach

Filter even elements

Filter odd elements

Concat 2 of them

Implementation

1/**
2 * @param {number[]} nums
3 * @return {number[]}
4 */
5var sortArrayByParity = function (nums) {
6  const isOdd = x => x % 2 !== 0
7  const isEven = x => x % 2 === 0
8  return [...nums.filter(isEven), ...nums.filter(isOdd)]
9}