回答編集履歴
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1行で
answer
CHANGED
@@ -17,4 +17,10 @@
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a (list, ary);
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```
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なんなら1行で
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```js
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[[1,2,3,4], [5,6,7,8], [9,10,11,12], [13,14,15,16]]
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.reduce((a,b)=>(b.reduce((c,d)=>(c.insertCell().textContent=d,c),a.insertRow()),a),list);
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```
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