freeCodeCamp/curriculum/challenges/chinese/10-coding-interview-prep/project-euler/problem-30-digit-n-powers.md

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---
id: 5900f38a1000cf542c50fe9d
title: 问题30数字n次方
challengeType: 5
videoUrl: ''
---
# --description--
令人惊讶的是,只有三个数字可以写为它们的数字的四次幂之和:
1634 = 1 <sup>4</sup> + 6 <sup>4</sup> + 3 <sup>4</sup> + 4 <sup>4</sup>
8208 = 8 <sup>4</sup> + 2 <sup>4</sup> + 0 <sup>4</sup> + 8 <sup>4</sup>
9474 = 9 <sup>4</sup> + 4 <sup>4</sup> + 7 <sup>4</sup> + 4 <sup>4</sup>
由于1 = 1 <sup>4</sup>不是总和,因此不包括在内。
这些数字的总和为1634 + 8208 + 9474 = 19316。
找出所有可以写为数字n次幂的数字之和。
# --hints--
`digitnPowers(2)`应该返回0。
```js
assert(digitnPowers(2) == 0);
```
`digitnPowers(3)`应该返回1301。
```js
assert(digitnPowers(3) == 1301);
```
`digitnPowers(4)`应该返回19316。
```js
assert(digitnPowers(4) == 19316);
```
`digitnPowers(5)`应该返回443839。
```js
assert(digitnPowers(5) == 443839);
```
# --solutions--