回答編集履歴
1
割り算し忘れ
answer
CHANGED
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@@ -2,6 +2,6 @@
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2
2
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3
3
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```javascript
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4
4
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let str = '0123456789';
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5
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-
let sum = parseInt(str, 10);
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5
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+
let sum = parseInt(str, 10) % 9;
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6
6
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if(sum === 0 && str > 0) sum = 9;
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7
7
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```
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