質問編集履歴
1
実行環境の追加
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File without changes
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body
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@@ -3,6 +3,8 @@
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3
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[コード参考記事](https://qiita.com/pebblip/items/cf8d3230969b2f6b3132)
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実行環境：node.js v10.5.0
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+
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```js
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const factrial = n => {
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if(n === 0) return 1;
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