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Feat: add new Markdown parser (#39800)

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and change all the challenges to new `md` format.
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Oliver Eyton-Williams
2020-11-27 19:02:05 +01:00
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commit 0bd52f8bd1
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curriculum/challenges/english/10-coding-interview-prep/project-euler/problem-209-circular-logic.md
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@ -1,46 +1,31 @@
---
id: 5900f43e1000cf542c50ff4f
challengeType: 5
title: 'Problem 209: Circular Logic'
challengeType: 5
forumTopicId: 301850
---
## Description
<section id='description'>
# --description--
A k-input binary truth table is a map from k input bits
(binary digits, 0 [false] or 1 [true]) to 1 output bit. For example, the 2-input binary truth tables for the logical AND and XOR functions are:
x
y
x AND y000010100111x
y
x XOR y000011101110How many 6-input binary truth tables, τ, satisfy the formula
(binary digits, 0 \[false] or 1 \[true]) to 1 output bit. For example, the 2-input binary truth tables for the logical AND and XOR functions are:
τ(a, b, c, d, e, f) AND τ(b, c, d, e, f, a XOR (b AND c)) = 0
for all 6-bit inputs (a, b, c, d, e, f)?
</section>
x y x AND y000010100111x y x XOR y000011101110How many 6-input binary truth tables, τ, satisfy the formula
## Instructions
<section id='instructions'>
τ(a, b, c, d, e, f) AND τ(b, c, d, e, f, a XOR (b AND c)) = 0 for all 6-bit inputs (a, b, c, d, e, f)?
</section>
# --hints--
## Tests
<section id='tests'>
```yml
tests:
- text: <code>euler209()</code> should return 15964587728784.
testString: assert.strictEqual(euler209(), 15964587728784);
`euler209()` should return 15964587728784.
```js
assert.strictEqual(euler209(), 15964587728784);
```
</section>
# --seed--
## Challenge Seed
<section id='challengeSeed'>
<div id='js-seed'>
## --seed-contents--
```js
function euler209() {
@ -51,17 +36,8 @@ function euler209() {
euler209();
```
</div>
</section>
## Solution
<section id='solution'>
# --solutions--
```js
// solution required
```
</section>