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77 lines
2.1 KiB
Markdown
77 lines
2.1 KiB
Markdown
---
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id: 68cae5b538ff798bbd4da00a
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title: "Challenge 72: Thermostat Adjuster 2"
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challengeType: 28
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dashedName: challenge-72
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---
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# --description--
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Given the current temperature of a room in Fahrenheit and a target temperature in Celsius, return a string indicating how to adjust the room temperature based on these constraints:
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- Return `"Heat: X degrees Fahrenheit"` if the current temperature is below the target. With `X` being the number of degrees in Fahrenheit to heat the room to reach the target, rounded to 1 decimal place.
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- Return `"Cool: X degrees Fahrenheit"` if the current temperature is above the target. With `X` being the number of degrees in Fahrenheit to cool the room to reach the target, rounded to 1 decimal place.
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- Return `"Hold"` if the current temperature is equal to the target.
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To convert Celsius to Fahrenheit, multiply the Celsius temperature by 1.8 and add 32 to the result (`F = (C * 1.8) + 32`).
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# --hints--
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`adjustThermostat(32, 0)` should return `"Hold"`.
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```js
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assert.equal(adjustThermostat(32, 0), "Hold");
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```
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`adjustThermostat(70, 25)` should return `"Heat: 7.0 degrees Fahrenheit"`.
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```js
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assert.equal(adjustThermostat(70, 25), "Heat: 7.0 degrees Fahrenheit");
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```
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`adjustThermostat(72, 18)` should return `"Cool: 7.6 degrees Fahrenheit"`.
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```js
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assert.equal(adjustThermostat(72, 18), "Cool: 7.6 degrees Fahrenheit");
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```
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`adjustThermostat(212, 100)` should return `"Hold"`.
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```js
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assert.equal(adjustThermostat(212, 100), "Hold");
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```
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`adjustThermostat(59, 22)` should return `"Heat: 12.6 degrees Fahrenheit"`.
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```js
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assert.equal(adjustThermostat(59, 22), "Heat: 12.6 degrees Fahrenheit");
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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 adjustThermostat(currentF, targetC) {
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return currentF;
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}
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```
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# --solutions--
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```js
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function adjustThermostat(currentF, targetC) {
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const targetF = targetC * 1.8 + 32;
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const diff = Math.abs(targetF - currentF).toFixed(1);
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if (currentF < targetF) {
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return `Heat: ${diff} degrees Fahrenheit`;
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} else if (currentF > targetF) {
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return `Cool: ${diff} degrees Fahrenheit`;
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} else {
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return "Hold"
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}
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}
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```
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