回答編集履歴
4
修正
answer
CHANGED
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@@ -8,4 +8,16 @@
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8
8
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}
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9
9
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var list = [["aaa",100],["bbb",10],["ccc",""],["ddd",30],["eee",40]].sort(comp);
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10
10
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console.log(list);
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11
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-
```
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11
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+
```
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12
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+
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13
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+
追記
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14
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+
すみません、-Infinityから-Infinityを引くとNaNになっちゃいますね…
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15
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+
やはり
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16
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+
```javascript
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17
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+
var comp = function(a, b) {
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18
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+
if (a[1] === "") return 1;
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19
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+
if (b[1] === "") return -1;
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20
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+
return (b[1] - a[1]);
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21
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+
}
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22
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+
```
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23
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+
が妥当でしょうか
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3
修正
answer
CHANGED
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@@ -6,7 +6,6 @@
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6
6
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var _b = (b[1] === "") ? -Infinity : b[1];
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7
7
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return (_b - _a);
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8
8
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}
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9
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-
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10
9
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var list = [["aaa",100],["bbb",10],["ccc",""],["ddd",30],["eee",40]].sort(comp);
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11
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-
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10
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+
console.log(list);
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12
11
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```
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2
修正
answer
CHANGED
|
@@ -8,4 +8,5 @@
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|
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8
8
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}
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9
9
|
|
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10
10
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var list = [["aaa",100],["bbb",10],["ccc",""],["ddd",30],["eee",40]].sort(comp);
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11
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+
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11
12
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```
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1
修正
answer
CHANGED
|
@@ -1,12 +1,11 @@
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1
1
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比較時に""を-Infinityに置き換えたらどうでしょうか．
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2
2
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3
3
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```javascript
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|
4
|
-
function testSort(list) {
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|
5
|
-
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|
4
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+
var comp = function(a, b) {
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|
6
|
-
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|
5
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+
var _a = (a[1] === "") ? -Infinity : a[1];
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7
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-
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|
6
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+
var _b = (b[1] === "") ? -Infinity : b[1];
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8
|
-
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|
7
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+
return (_b - _a);
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|
9
|
-
});
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10
|
-
return list;
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11
8
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}
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|
9
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+
|
|
10
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+
var list = [["aaa",100],["bbb",10],["ccc",""],["ddd",30],["eee",40]].sort(comp);
|
|
12
11
|
```
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