回答編集履歴
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コード追加
answer
CHANGED
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@@ -1,4 +1,10 @@
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1
1
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```JavaScript
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2
2
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const replaced = (a=>[a[1],"hoge",a[2],"fuga",a[3]].join(""))("000000000".match(/(.{3})(.{3})(.*)/));
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3
3
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//000hoge000fuga000
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4
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```
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5
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+
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6
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```JavaScript
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7
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(a => a.map((val, i) => val+"円万億兆京垓".substr(i,1)).reverse().join(""))
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8
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("123456781234567".split(/(?=(?:\d{4})+$)/).reverse());
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9
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//123兆4567億8123万4567円
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4
10
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```
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