---
id: 5900f37d1000cf542c50fe8f
challengeType: 5
title: 'Problem 16: Power digit sum'
videoUrl: ''
localeTitle: 问题16：电源数字总和
---

## Description
undefined

## 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, "<code>powerDigitSum(15)</code> should return 26.");'
  - text: <code>powerDigitSum(128)</code>应该返回166。
    testString: 'assert.strictEqual(powerDigitSum(128), 166, "<code>powerDigitSum(128)</code> should return 166.");'
  - text: <code>powerDigitSum(1000)</code>应返回1366。
    testString: 'assert.strictEqual(powerDigitSum(1000), 1366, "<code>powerDigitSum(1000)</code> should return 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>