81 lines
3.0 KiB
Markdown
81 lines
3.0 KiB
Markdown
---
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title: I before E except after C
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id: 5a23c84252665b21eecc7eb0
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challengeType: 5
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---
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## Description
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<section id='description'>
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The phrase <a href="https://en.wikipedia.org/wiki/I before E except after C"> "I before E, except after C"</a> is a widely known mnemonic which is supposed to help when spelling English words.
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Using the words provided, check if the two sub-clauses of the phrase are plausible individually:
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<ol><li style='margin-bottom: 5px;'><i>"I before E when not preceded by C".</i></li><li><i>"E before I when preceded by C".</i></li></ol>
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If both sub-phrases are plausible then the original phrase can be said to be plausible.
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Write a function that accepts a word and check if the word follows this rule. The function should return true if it follows the rule otherwise false.
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</section>
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## Instructions
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<section id='instructions'>
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</section>
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## Tests
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<section id='tests'>
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```yml
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tests:
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- text: <code>IBeforeExceptC</code> should be a function.
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testString: assert(typeof IBeforeExceptC=='function','<code>IBeforeExceptC</code> should be a function.');
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- text: <code>IBeforeExceptC("receive")</code> should return a boolean.
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testString: assert(typeof IBeforeExceptC("receive")=='boolean','<code>IBeforeExceptC("receive")</code> should return a boolean.');
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- text: <code>IBeforeExceptC("receive")</code> should return <code>true</code>.
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testString: assert.equal(IBeforeExceptC("receive"),true,'<code>IBeforeExceptC("receive")</code> should return <code>true</code>.');
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- text: <code>IBeforeExceptC("science")</code> should return <code>false</code>.
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testString: assert.equal(IBeforeExceptC("science"),false,'<code>IBeforeExceptC("science")</code> should return <code>false</code>.');
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- text: <code>IBeforeExceptC("imperceivable")</code> should return <code>true</code>.
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testString: assert.equal(IBeforeExceptC("imperceivable"),true,'<code>IBeforeExceptC("imperceivable")</code> should return <code>true</code>.');
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- text: <code>IBeforeExceptC("inconceivable")</code> should return <code>true</code>.
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testString: assert.equal(IBeforeExceptC("inconceivable"),true,'<code>IBeforeExceptC("inconceivable")</code> should return <code>true</code>.');
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- text: <code>IBeforeExceptC("insufficient")</code> should return <code>false</code>.
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testString: assert.equal(IBeforeExceptC("insufficient"),false,'<code>IBeforeExceptC("insufficient")</code> should return <code>false</code>.');
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- text: <code>IBeforeExceptC("omniscient")</code> should return <code>false</code>.
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testString: assert.equal(IBeforeExceptC("omniscient"),false,'<code>IBeforeExceptC("omniscient")</code> should return <code>false</code>.');
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```
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</section>
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## Challenge Seed
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<section id='challengeSeed'>
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<div id='js-seed'>
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```js
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function IBeforeExceptC (word) {
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// Good luck!
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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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```js
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function IBeforeExceptC (word)
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{
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if(word.indexOf("c")==-1 && word.indexOf("ie")!=-1)
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return true;
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else if(word.indexOf("cei")!=-1)
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return true;
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return false;
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}
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```
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</section>
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