显示来自 API 的随机问题

Question

我有一个问题。我正在做一些测验，我需要你的帮助。我们需要显示不重复的随机问题。我不知道怎么做。我是 JavaScript 的初学者。下面是我的代码。 import { State } from "../../../framework/StateBase";import { Conversation } from "../../../framework/ConversationBase";import { getLanguage } from "../../../gateways/GigaaaGateway";import { RatherGameGateway } from "../gateway/RatherGameGateway";export class GetUserQuestionState extends State {    constructor(conversation: Conversation, name: string) {        super(conversation, name);    }    public configure(convo: any, bot: any) {        convo.beforeThread(this.name, async convo => {            let gateway = new RatherGameGateway();            let age = this.conversation.payload.userAges;            let ageCategory: number;            try {                let lang = await getLanguage(this.conversation.languageId, bot);                if (age > 11) {                    ageCategory = 0;                    let result = await gateway.findLangCodeAndAge(lang.code, ageCategory);                    if (this.conversation.payload.counter === 0) {                        this.conversation.payload.params.question = result[0].questions[Math.floor(Math.random())];                    } else if (this.conversation.payload.counter > 0) {                        this.conversation.payload.params.next_question = result[0].questions[this.conversation.payload.counter];                    }                    this.conversation.payload.counter++;        });    }}看看if循环。非常感谢！

Answer 1

从高层次的角度来看，我会做如下：

1. 有 2 个问题列表（针对 2 个年龄组）。

2. 随机播放相应的一组问题

3. 从问题集中弹出最后一个元素以显示用户。

4. 重复。

好的，假设您有两个问题列表或数组：

let smallQuestions = ['how many fingers do you have', 'what does the dog say', 'what color is a sheep', 'how old are you'];

let bigQuestions = ['how many kids do you have', 'did you do your taxes', 'do you own a car', 'do you drink alcohol'];

现在让我们编写一个小函数来打乱一个数组：

const shuffleArray = arr => arr

  .map(a => [Math.random(), a])

  .sort((a, b) => a[0] - b[0])

  .map(a => a[1]);

现在一些伪代码来显示场景：

let smallQuestions = ['how many fingers do you have', 'what does the dog say', 'what color is a sheep', 'how old are you'];

let bigQuestions = ['how many kids do you have', 'did you do your taxes', 'do you own a car', 'do you drink alcohol'];

const shuffleArray = arr => arr

  .map(a => [Math.random(), a])

  .sort((a, b) => a[0] - b[0])

  .map(a => a[1]);

const askMeSomething = (age) => {

  if (age > 11) {

    bigQuestions = shuffleArray(bigQuestions);

    return bigQuestions.pop();

  } else if (age >= 4) {

    smallQuestions = shuffleArray(smallQuestions);

    return smallQuestions.pop() || 'out of questions';

  } else return 'too young';

}

console.log(askMeSomething(3));

console.log(askMeSomething(4));

console.log(askMeSomething(5));

console.log(askMeSomething(6));

console.log(askMeSomething(7));

console.log(askMeSomething(8));

Answer 2

该命令let order = [...Array(numberOfItems).keys()].map(x => ({val:x,rand:Math.random()})).sort((a,b) => a.rand - b.rand).map(x => x.val);将创建一个长度numberOfItems很长的列表，但项目随机排序。（项目将被 0 索引）。

例如，如果 numberOfItems = 10，这将给出一个类似的列表：[9, 5, 4, 1, 8, 3, 7, 6, 0, 2]。

然后，您可以简单地浏览此列表，以确定要问哪个问题而无需重复。