Feat: add new Markdown parser (#39800)
and change all the challenges to new `md` format.
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Oliver Eyton-Williams
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@ -5,10 +5,9 @@ challengeType: 5
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forumTopicId: 385322
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---
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## Description
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# --description--
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<section id='description'>
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All real numbers form the uncountable set ℝ. Among its subsets, relatively simple are the convex sets, each expressed as a range between two real numbers <i>a</i> and <i>b</i> where <i>a</i> ≤ <i>b</i>. There are actually four cases for the meaning of "between", depending on open or closed boundary:
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All real numbers form the uncountable set ℝ. Among its subsets, relatively simple are the convex sets, each expressed as a range between two real numbers *a* and *b* where *a* ≤ *b*. There are actually four cases for the meaning of "between", depending on open or closed boundary:
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<ul>
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<li>[<i>a</i>, <i>b</i>]: {<i>x</i> | <i>a</i> ≤ <i>x</i> and <i>x</i> ≤ <i>b</i> }</li>
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@ -17,9 +16,9 @@ All real numbers form the uncountable set ℝ. Among its subsets, relatively si
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<li>(<i>a</i>, <i>b</i>]: {<i>x</i> | <i>a</i> < <i>x</i> and <i>x</i> ≤ <i>b</i> }</li>
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</ul>
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Note that if <i>a</i> = <i>b</i>, of the four only [<i>a</i>, <i>a</i>] would be non-empty.
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Note that if *a* = *b*, of the four only \[*a*, *a*] would be non-empty.
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<strong>Task</strong>
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**Task**
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<ul>
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<li>Devise a way to represent any set of real numbers, for the definition of "any" in the implementation notes below.</li>
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@ -43,50 +42,113 @@ Note that if <i>a</i> = <i>b</i>, of the four only [<i>a</i>, <i>a</i>] would be
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</li>
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</ul>
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</ul>
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</section>
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## Instructions
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# --instructions--
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<section id='instructions'>
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Write a function that takes 2 objects, a string and an array as parameters. The objects represents the set and have attributes: `low`, `high` and `rangeType`.
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Write a function that takes 2 objects, a string and an array as parameters. The objects represents the set and have attributes: `low`, `high` and `rangeType`.
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The `rangeType` can have values 0, 1, 2 and 3 for `CLOSED`, `BOTH_OPEN`, `LEFT_OPEN` and `RIGHT_OPEN`, respectively. The function should implement a set using this information.
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The `rangeType` can have values 0, 1, 2 and 3 for `CLOSED`, `BOTH_OPEN`, `LEFT_OPEN` and `RIGHT_OPEN`, respectively. The function should implement a set using this information.
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The string represents the operation to be performed on the sets. It can be: `"union"`, `"intersect"` and `"subtract"` (difference).
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The string represents the operation to be performed on the sets. It can be: `"union"`, `"intersect"` and `"subtract"` (difference).
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After performing the operation, the function should check if the values in the array are present in the resultant set and store a corresponding boolean value to an array. The function should return this array.
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</section>
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# --hints--
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## Tests
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`realSet` should be a function.
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<section id='tests'>
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```yml
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tests:
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- text: <code>realSet</code> should be a function.
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testString: assert(typeof realSet=='function');
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- text: <code>realSet({"low":0, "high":1, "rangeType":2}, {"low":0, "high":2, "rangeType":3}, "union", [1, 2, 3])</code> should return a array.
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testString: assert(Array.isArray(realSet({"low":0, "high":1, "rangeType":2}, {"low":0, "high":2, "rangeType":3}, "union", [1, 2, 3])));
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- text: <code>realSet({"low":0, "high":1, "rangeType":2}, {"low":0, "high":2, "rangeType":3}, "union", [1, 2, 3])</code> should return <code>[true, false, false]</code>.
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testString: assert.deepEqual(realSet({"low":0, "high":1, "rangeType":2}, {"low":0, "high":2, "rangeType":3}, "union", [1, 2, 3]), [true, false, false]);
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- text: <code>realSet({"low":0, "high":2, "rangeType":3}, {"low":1, "high":2, "rangeType":2}, "intersect", [0, 1, 2])</code> should return <code>[false, false, false]</code>.
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testString: assert.deepEqual(realSet({"low":0, "high":2, "rangeType":3}, {"low":1, "high":2, "rangeType":2}, "intersect", [0, 1, 2]), [false, false, false]);
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- text: <code>realSet({"low":0, "high":3, "rangeType":3}, {"low":0, "high":1, "rangeType":1}, "subtract", [0, 1, 2])</code> should return <code>[true, true, true]</code>.
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testString: assert.deepEqual(realSet({"low":0, "high":3, "rangeType":3}, {"low":0, "high":1, "rangeType":1}, "subtract", [0, 1, 2]), [true, true, true]);
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- text: <code>realSet({"low":0, "high":3, "rangeType":3}, {"low":0, "high":1, "rangeType":0}, "subtract", [0, 1, 2])</code> should return <code>[false, false, true]</code>.
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testString: assert.deepEqual(realSet({"low":0, "high":3, "rangeType":3}, {"low":0, "high":1, "rangeType":0}, "subtract", [0, 1, 2]), [false, false, true]);
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- text: <code>realSet({"low":0, "high":33, "rangeType":1}, {"low":30, "high":31, "rangeType":0}, "intersect", [30, 31, 32])</code> should return <code>[true, true, false]</code>.
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testString: assert.deepEqual(realSet({"low":0, "high":33, "rangeType":1}, {"low":30, "high":31, "rangeType":0}, "intersect", [30, 31, 32]), [true, true, false]);
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```js
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assert(typeof realSet == 'function');
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```
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</section>
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`realSet({"low":0, "high":1, "rangeType":2}, {"low":0, "high":2, "rangeType":3}, "union", [1, 2, 3])` should return a array.
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## Challenge Seed
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```js
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assert(
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Array.isArray(
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realSet(
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{ low: 0, high: 1, rangeType: 2 },
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{ low: 0, high: 2, rangeType: 3 },
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'union',
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[1, 2, 3]
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)
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)
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);
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```
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<section id='challengeSeed'>
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<div id='js-seed'>
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`realSet({"low":0, "high":1, "rangeType":2}, {"low":0, "high":2, "rangeType":3}, "union", [1, 2, 3])` should return `[true, false, false]`.
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```js
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assert.deepEqual(
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realSet(
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{ low: 0, high: 1, rangeType: 2 },
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{ low: 0, high: 2, rangeType: 3 },
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'union',
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[1, 2, 3]
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),
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[true, false, false]
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);
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```
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`realSet({"low":0, "high":2, "rangeType":3}, {"low":1, "high":2, "rangeType":2}, "intersect", [0, 1, 2])` should return `[false, false, false]`.
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```js
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assert.deepEqual(
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realSet(
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{ low: 0, high: 2, rangeType: 3 },
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{ low: 1, high: 2, rangeType: 2 },
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'intersect',
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[0, 1, 2]
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),
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[false, false, false]
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);
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```
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`realSet({"low":0, "high":3, "rangeType":3}, {"low":0, "high":1, "rangeType":1}, "subtract", [0, 1, 2])` should return `[true, true, true]`.
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```js
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assert.deepEqual(
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realSet(
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{ low: 0, high: 3, rangeType: 3 },
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{ low: 0, high: 1, rangeType: 1 },
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'subtract',
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[0, 1, 2]
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),
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[true, true, true]
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);
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```
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`realSet({"low":0, "high":3, "rangeType":3}, {"low":0, "high":1, "rangeType":0}, "subtract", [0, 1, 2])` should return `[false, false, true]`.
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```js
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assert.deepEqual(
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realSet(
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{ low: 0, high: 3, rangeType: 3 },
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{ low: 0, high: 1, rangeType: 0 },
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'subtract',
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[0, 1, 2]
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),
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[false, false, true]
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);
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```
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`realSet({"low":0, "high":33, "rangeType":1}, {"low":30, "high":31, "rangeType":0}, "intersect", [30, 31, 32])` should return `[true, true, false]`.
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```js
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assert.deepEqual(
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realSet(
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{ low: 0, high: 33, rangeType: 1 },
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{ low: 30, high: 31, rangeType: 0 },
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'intersect',
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[30, 31, 32]
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),
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[true, true, false]
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);
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```
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# --seed--
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## --seed-contents--
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```js
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function realSet(set1, set2, operation, values) {
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@ -94,12 +156,7 @@ function realSet(set1, set2, operation, values) {
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}
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```
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</div>
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</section>
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## Solution
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<section id='solution'>
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# --solutions--
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```js
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function realSet(set1, set2, operation, values) {
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@ -179,5 +236,3 @@ function realSet(set1, set2, operation, values) {
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return result;
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}
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```
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</section>
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