freeCodeCamp/curriculum/challenges/chinese/10-coding-interview-prep/project-euler/problem-16-power-digit-sum.md

---
id: 5900f37d1000cf542c50fe8f
challengeType: 5
videoUrl: ''
title: 问题16：电源数字总和
---

## Description
<section id="description">
2 <sup> 15 </ sup> = 32768，其位数之和为3 + 2 + 7 + 6 + 8 = 26。
2 <sup> <code>指数</ code> </ sup>的数字总和是多少？
</section>

## Instructions
<section id="instructions">
</section>

## Tests
<section id='tests'>

```yml
tests:
  - text: <code>powerDigitSum(15)</code>应该返回26。
    testString: assert.strictEqual(powerDigitSum(15), 26);
  - text: <code>powerDigitSum(128)</code>应该返回166。
    testString: assert.strictEqual(powerDigitSum(128), 166);
  - text: <code>powerDigitSum(1000)</code>应返回1366。
    testString: assert.strictEqual(powerDigitSum(1000), 1366);

```

</section>

## Challenge Seed
<section id='challengeSeed'>

<div id='js-seed'>

```js
function powerDigitSum(exponent) {
  // Good luck!
  return true;
}

powerDigitSum(15);

```

</div>



</section>

## Solution
<section id='solution'>

```js
// solution required
```

/section>