Oliver Eyton-Williams ee1e8abd87
feat(curriculum): restore seed + solution to Chinese (#40683)
* feat(tools): add seed/solution restore script

* chore(curriculum): remove empty sections' markers

* chore(curriculum): add seed + solution to Chinese

* chore: remove old formatter

* fix: update getChallenges

parse translated challenges separately, without reference to the source

* chore(curriculum): add dashedName to English

* chore(curriculum): add dashedName to Chinese

* refactor: remove unused challenge property 'name'

* fix: relax dashedName requirement

* fix: stray tag

Remove stray `pre` tag from challenge file.

Signed-off-by: nhcarrigan <nhcarrigan@gmail.com>

Co-authored-by: nhcarrigan <nhcarrigan@gmail.com>
2021-01-12 19:31:00 -07:00

2.0 KiB
Raw Blame History

id, title, challengeType, videoUrl, forumTopicId, dashedName
id title challengeType videoUrl forumTopicId dashedName
cf1111c1c12feddfaeb2bdef 生成某个范围内的随机整数 1 https://scrimba.com/c/cm83yu6 18187 generate-random-whole-numbers-within-a-range

--description--

我们之前生成的随机数是在0到某个数之间现在我们要生成的随机数是在两个指定的数之间。

我们需要定义一个最小值和一个最大值。

下面是我们将要使用的方法,仔细看看并尝试理解这行代码到底在干嘛:

Math.floor(Math.random() * (max - min + 1)) + min

--instructions--

创建一个叫randomRange的函数,参数为 myMin 和 myMax返回一个在myMin(包括 myMinmyMax(包括 myMax之间的随机数。

--hints--

randomRange返回的随机数应该大于或等于myMin

assert(calcMin === 5);

randomRange返回的随机数应该小于或等于myMax

assert(calcMax === 15);

randomRange应该返回一个随机整数, 而不是小数。

assert(randomRange(0, 1) % 1 === 0);

randomRange应该使用myMaxmyMin, 并且返回两者之间的随机数。

assert(
  (function () {
    if (
      code.match(/myMax/g).length > 1 &&
      code.match(/myMin/g).length > 2 &&
      code.match(/Math.floor/g) &&
      code.match(/Math.random/g)
    ) {
      return true;
    } else {
      return false;
    }
  })()
);

--seed--

--after-user-code--

var calcMin = 100;
var calcMax = -100;
for(var i = 0; i < 100; i++) {
  var result = randomRange(5,15);
  calcMin = Math.min(calcMin, result);
  calcMax = Math.max(calcMax, result);
}
(function(){
  if(typeof myRandom === 'number') {
    return "myRandom = " + myRandom;
  } else {
    return "myRandom undefined";
  }
})()

--seed-contents--

function randomRange(myMin, myMax) {
  // Only change code below this line
  return 0;
  // Only change code above this line
}

--solutions--

function randomRange(myMin, myMax) {
  return Math.floor(Math.random() * (myMax - myMin + 1)) + myMin;
}