Array.diff

发表于 2023-10-18 分类于技术阅读次数：本文字数： 81 阅读时长 ≈ 1 分钟

DESCRIPTION

Your goal in this kata is to implement a difference function, which subtracts one list from another and returns the result.

It should remove all values from list a, which are present in list b keeping their order.

arrayDiff([1,2],[1]) == [2]

If a value is present in b, all of its occurrences must be removed from the other:

arrayDiff([1,2,2,2,3],[2]) == [1,3]

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function arrDiff(a, b) {
  return a.filter((item) => !b.includes(item));
}