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100 lines
2.1 KiB
Markdown
100 lines
2.1 KiB
Markdown
---
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id: 69a890af247de743333bd4cd
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title: "Challenge 224: Coffee Roast Detector"
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challengeType: 28
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dashedName: challenge-224
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---
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# --description--
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Given a string representing the beans used to make a cup of coffee, determine the roast of the cup.
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- The given string will contain the following characters, each representing a type of bean:
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- An apostrophe (`'`) is a light roast bean worth 1 point each.
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- A dash (`-`) is a medium roast bean worth 2 points each.
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- A period (`.`) is a dark roast bean worth 3 points each.
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- The roast level is determined by the average of all the beans.
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Return:
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- `"Light"` if the average is less than 1.75.
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- `"Medium"` if the average is 1.75 to 2.5.
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- `"Dark"` if the average is greater than 2.5.
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# --hints--
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`detectRoast("''-''''''-'-''--''''")` should return `"Light"`.
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```js
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assert.equal(detectRoast("''-''''''-'-''--''''"), "Light");
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```
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`detectRoast(".'-''-''..'''.-.-''-")` should return `"Medium"`.
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```js
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assert.equal(detectRoast(".'-''-''..'''.-.-''-"), "Medium");
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```
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`detectRoast("--.''--'-''.--..-.--")` should return `"Medium"`.
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```js
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assert.equal(detectRoast("--.''--'-''.--..-.--"), "Medium");
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```
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`detectRoast("-...'-......-..-...-")` should return `"Dark"`.
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```js
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assert.equal(detectRoast("-...'-......-..-...-"), "Dark");
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```
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`detectRoast(".--.-..-......----.'")` should return `"Medium"`.
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```js
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assert.equal(detectRoast(".--.-..-......----.'"), "Medium");
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```
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`detectRoast("..-..-..-..-....-.-.")` should return `"Dark"`.
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```js
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assert.equal(detectRoast("..-..-..-..-....-.-."), "Dark");
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```
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`detectRoast("-'-''''''..-'.''-'.'")` should return `"Light"`.
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```js
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assert.equal(detectRoast("-'-''''''..-'.''-'.'"), "Light");
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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 detectRoast(beans) {
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return beans;
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}
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```
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# --solutions--
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```js
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function detectRoast(beans) {
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let total = 0;
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for (const bean of beans) {
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if (bean === "'") total += 1;
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else if (bean === "-") total += 2;
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else if (bean === ".") total += 3;
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}
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const avg = total / beans.length;
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if (avg < 1.75) return "Light";
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if (avg <= 2.5) return "Medium";
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return "Dark";
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}
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```
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