回答編集履歴
1
chousei
test
CHANGED
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@@ -4,7 +4,7 @@
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4
4
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5
5
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const array = [[1,2,3], [4,5,6], [7,8,9]]
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6
6
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7
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-
const result=array.reduce((x,y)=>
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7
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+
const result=array.reduce((x,y)=>x.map((i,j)=>i+y[j]));
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8
8
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9
9
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console.log(result);
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10
10
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