回答編集履歴
2
'00'+ の削除
answer
CHANGED
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@@ -1,8 +1,10 @@
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1
1
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```python
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2
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-
def comma(n): return str(n) if n < 1000 else comma(n//1000)+','+
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2
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+
def comma(n): return str(n) if n < 1000 else comma(n//1000)+','+str(n)[-3:]
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3
3
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4
4
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print(comma(1000))
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5
5
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print(comma(10000))
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6
6
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print(comma(1234567))
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7
7
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print(comma(123456789))
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8
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-
```
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8
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+
```
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9
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+
**追記**
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10
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+
`('00'+str(n))[-3:]` を `str(n)[-3:]` に修正しました。
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1
``` を付けた
answer
CHANGED
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@@ -1,6 +1,8 @@
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1
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+
```python
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1
2
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def comma(n): return str(n) if n < 1000 else comma(n//1000)+','+('00'+str(n))[-3:]
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2
3
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3
4
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print(comma(1000))
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4
5
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print(comma(10000))
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5
6
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print(comma(1234567))
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6
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-
print(comma(123456789))
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7
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+
print(comma(123456789))
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8
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+
```
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