2215.js

/** ------------------------------------------------------------------------------
 * 
 * 2023-05-03
 * 2215. Find the Diffrence of Two Arrays
 * https://leetcode.com/problems/find-the-difference-of-two-arrays/submissions/943795871/
 * 
 ------------------------------------------------------------------------------ */
/**
 * @param {number[]} nums1
 * @param {number[]} nums2
 * @return {number[][]}
 */
var findDifference = function (nums1, nums2) {
  const array = nums1.filter((v) => {
    for (const s of nums2) {
      if (s === v) return false;
    }
    return true;
  });

  const array2 = nums2.filter((v) => {
    for (const s of nums1) {
      if (s === v) return false;
    }
    return true;
  });

  return [Array.from(new Set(array)), Array.from(new Set(array2))];
};

var findDifference = function (nums1, nums2) {
  let nums1Set = new Set(nums1);
  let nums2Set = new Set(nums2);

  let result = [[], []];
  for (num of nums1Set) {
    if (!nums2Set.has(num)) result[0].push(num);
  }

  for (num of nums2Set) {
    if (!nums1Set.has(num)) result[1].push(num);
  }

  return result;
};

console.log();