回答編集履歴
1
インデント修正
answer
CHANGED
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@@ -7,13 +7,13 @@
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7
7
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int idx = 13;
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8
8
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boolean minus = false;
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9
9
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if (val < 0) {
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10
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-
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10
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+
minus = true;
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11
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-
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11
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+
val = -val;
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12
12
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}
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13
13
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do {
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14
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-
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14
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+
if (idx % 4 == 2) chars[idx--] = ',';
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15
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-
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15
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+
chars[idx--] = (char)('0' + (val % 10));
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16
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-
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16
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+
val /= 10;
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17
17
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} while(val != 0);
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18
18
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if (minus) chars[idx--] = '-';
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19
19
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if (idx == -1) return chars;
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