freeCodeCamp/curriculum/challenges/chinese/02-javascript-algorithms-and-data-structures/intermediate-algorithm-scripting/diff-two-arrays.chinese.md

id	title	isRequired	challengeType	videoUrl	localeTitle
a5de63ebea8dbee56860f4f2	Diff Two Arrays	true	5		差分两个阵列

Description

比较两个数组并返回一个新数组，其中只有在两个给定数组中的一个中找到的任何项，但不能同时返回两个数组。换句话说，返回两个数组的对称差异。如果卡住，请记得使用Read-Search-Ask 。尝试配对程序。编写自己的代码。 注意
您可以按任何顺序返回包含其元素的数组。

Instructions

Tests

tests:
  - text: '<code>diffArray([1, 2, 3, 5], [1, 2, 3, 4, 5])</code>应该返回一个数组。'
    testString: 'assert(typeof diffArray([1, 2, 3, 5], [1, 2, 3, 4, 5]) === "object", "<code>diffArray([1, 2, 3, 5], [1, 2, 3, 4, 5])</code> should return an array.");'
  - text: '<code>[&quot;diorite&quot;, &quot;andesite&quot;, &quot;grass&quot;, &quot;dirt&quot;, &quot;pink wool&quot;, &quot;dead shrub&quot;], [&quot;diorite&quot;, &quot;andesite&quot;, &quot;grass&quot;, &quot;dirt&quot;, &quot;dead shrub&quot;]</code>应该返回<code>[&quot;pink wool&quot;]</code> 。'
    testString: 'assert.sameMembers(diffArray(["diorite", "andesite", "grass", "dirt", "pink wool", "dead shrub"], ["diorite", "andesite", "grass", "dirt", "dead shrub"]), ["pink wool"], "<code>["diorite", "andesite", "grass", "dirt", "pink wool", "dead shrub"], ["diorite", "andesite", "grass", "dirt", "dead shrub"]</code> should return <code>["pink wool"]</code>.");'
  - text: '<code>[&quot;diorite&quot;, &quot;andesite&quot;, &quot;grass&quot;, &quot;dirt&quot;, &quot;pink wool&quot;, &quot;dead shrub&quot;], [&quot;diorite&quot;, &quot;andesite&quot;, &quot;grass&quot;, &quot;dirt&quot;, &quot;dead shrub&quot;]</code>应该返回一个包含一个项目的数组。'
    testString: 'assert(diffArray(["diorite", "andesite", "grass", "dirt", "pink wool", "dead shrub"], ["diorite", "andesite", "grass", "dirt", "dead shrub"]).length === 1, "<code>["diorite", "andesite", "grass", "dirt", "pink wool", "dead shrub"], ["diorite", "andesite", "grass", "dirt", "dead shrub"]</code> should return an array with one item.");'
  - text: '<code>[&quot;andesite&quot;, &quot;grass&quot;, &quot;dirt&quot;, &quot;pink wool&quot;, &quot;dead shrub&quot;], [&quot;diorite&quot;, &quot;andesite&quot;, &quot;grass&quot;, &quot;dirt&quot;, &quot;dead shrub&quot;]</code>应该返回<code>[&quot;diorite&quot;, &quot;pink wool&quot;]</code> 。'
    testString: 'assert.sameMembers(diffArray(["andesite", "grass", "dirt", "pink wool", "dead shrub"], ["diorite", "andesite", "grass", "dirt", "dead shrub"]), ["diorite", "pink wool"], "<code>["andesite", "grass", "dirt", "pink wool", "dead shrub"], ["diorite", "andesite", "grass", "dirt", "dead shrub"]</code> should return <code>["diorite", "pink wool"]</code>.");'
  - text: '<code>[&quot;andesite&quot;, &quot;grass&quot;, &quot;dirt&quot;, &quot;pink wool&quot;, &quot;dead shrub&quot;], [&quot;diorite&quot;, &quot;andesite&quot;, &quot;grass&quot;, &quot;dirt&quot;, &quot;dead shrub&quot;]</code>应该返回一个数组有两个项目。'
    testString: 'assert(diffArray(["andesite", "grass", "dirt", "pink wool", "dead shrub"], ["diorite", "andesite", "grass", "dirt", "dead shrub"]).length === 2, "<code>["andesite", "grass", "dirt", "pink wool", "dead shrub"], ["diorite", "andesite", "grass", "dirt", "dead shrub"]</code> should return an array with two items.");'
  - text: '<code>[&quot;andesite&quot;, &quot;grass&quot;, &quot;dirt&quot;, &quot;dead shrub&quot;], [&quot;andesite&quot;, &quot;grass&quot;, &quot;dirt&quot;, &quot;dead shrub&quot;]</code>应该返回<code>[]</code> 。'
    testString: 'assert.sameMembers(diffArray(["andesite", "grass", "dirt", "dead shrub"], ["andesite", "grass", "dirt", "dead shrub"]), [], "<code>["andesite", "grass", "dirt", "dead shrub"], ["andesite", "grass", "dirt", "dead shrub"]</code> should return <code>[]</code>.");'
  - text: '<code>[&quot;andesite&quot;, &quot;grass&quot;, &quot;dirt&quot;, &quot;dead shrub&quot;], [&quot;andesite&quot;, &quot;grass&quot;, &quot;dirt&quot;, &quot;dead shrub&quot;]</code>应返回一个空数组。'
    testString: 'assert(diffArray(["andesite", "grass", "dirt", "dead shrub"], ["andesite", "grass", "dirt", "dead shrub"]).length === 0, "<code>["andesite", "grass", "dirt", "dead shrub"], ["andesite", "grass", "dirt", "dead shrub"]</code> should return an empty array.");'
  - text: '<code>[1, 2, 3, 5], [1, 2, 3, 4, 5]</code>应该返回<code>[4]</code> 。'
    testString: 'assert.sameMembers(diffArray([1, 2, 3, 5], [1, 2, 3, 4, 5]), [4], "<code>[1, 2, 3, 5], [1, 2, 3, 4, 5]</code> should return <code>[4]</code>.");'
  - text: '<code>[1, 2, 3, 5], [1, 2, 3, 4, 5]</code>应该返回一个带有一个项目的数组。'
    testString: 'assert(diffArray([1, 2, 3, 5], [1, 2, 3, 4, 5]).length  === 1, "<code>[1, 2, 3, 5], [1, 2, 3, 4, 5]</code> should return an array with one item.");'
  - text: '<code>[1, &quot;calf&quot;, 3, &quot;piglet&quot;], [1, &quot;calf&quot;, 3, 4]</code>应返回<code>[&quot;piglet&quot;, 4]</code> 。'
    testString: 'assert.sameMembers(diffArray([1, "calf", 3, "piglet"], [1, "calf", 3, 4]), ["piglet", 4], "<code>[1, "calf", 3, "piglet"], [1, "calf", 3, 4]</code> should return <code>["piglet", 4]</code>.");'
  - text: '<code>[1, &quot;calf&quot;, 3, &quot;piglet&quot;], [1, &quot;calf&quot;, 3, 4]</code>应该返回一个包含两个项目的数组。'
    testString: 'assert(diffArray([1, "calf", 3, "piglet"], [1, "calf", 3, 4]).length === 2, "<code>[1, "calf", 3, "piglet"], [1, "calf", 3, 4]</code> should return an array with two items.");'
  - text: '<code>[], [&quot;snuffleupagus&quot;, &quot;cookie monster&quot;, &quot;elmo&quot;]</code>应该返回<code>[&quot;snuffleupagus&quot;, &quot;cookie monster&quot;, &quot;elmo&quot;]</code> 。'
    testString: 'assert.sameMembers(diffArray([], ["snuffleupagus", "cookie monster", "elmo"]), ["snuffleupagus", "cookie monster", "elmo"], "<code>[], ["snuffleupagus", "cookie monster", "elmo"]</code> should return <code>["snuffleupagus", "cookie monster", "elmo"]</code>.");'
  - text: '<code>[], [&quot;snuffleupagus&quot;, &quot;cookie monster&quot;, &quot;elmo&quot;]</code>应该返回一个包含三个项目的数组。'
    testString: 'assert(diffArray([], ["snuffleupagus", "cookie monster", "elmo"]).length === 3, "<code>[], ["snuffleupagus", "cookie monster", "elmo"]</code> should return an array with three items.");'
  - text: '<code>[1, &quot;calf&quot;, 3, &quot;piglet&quot;], [7, &quot;filly&quot;]</code> <code>[1, &quot;calf&quot;, 3, &quot;piglet&quot;, 7, &quot;filly&quot;]</code> <code>[1, &quot;calf&quot;, 3, &quot;piglet&quot;], [7, &quot;filly&quot;]</code>应该返回<code>[1, &quot;calf&quot;, 3, &quot;piglet&quot;, 7, &quot;filly&quot;]</code> 。'
    testString: 'assert.sameMembers(diffArray([1, "calf", 3, "piglet"], [7, "filly"]), [1, "calf", 3, "piglet", 7, "filly"], "<code>[1, "calf", 3, "piglet"], [7, "filly"]</code> should return <code>[1, "calf", 3, "piglet", 7, "filly"]</code>.");'
  - text: '<code>[1, &quot;calf&quot;, 3, &quot;piglet&quot;], [7, &quot;filly&quot;]</code>应该返回一个包含六个项目的数组。'
    testString: 'assert(diffArray([1, "calf", 3, "piglet"], [7, "filly"]).length === 6, "<code>[1, "calf", 3, "piglet"], [7, "filly"]</code> should return an array with six items.");'

Challenge Seed

function diffArray(arr1, arr2) {
  var newArr = [];
  // Same, same; but different.
  return newArr;
}

diffArray([1, 2, 3, 5], [1, 2, 3, 4, 5]);

Solution

// solution required