回答編集履歴
2
文字列比較はequals
answer
CHANGED
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@@ -21,4 +21,27 @@
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21
21
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}
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22
22
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return ret;
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23
23
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}
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24
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+
```
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25
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+
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26
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+
---
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27
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+
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28
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+
Stringの比較にはequalsを使います。今のままs.equals()を使うとNullPointerExceptionになるので、処理手順を変えます。
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29
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+
```java
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30
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+
public static void main(String[] arg) {
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31
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Scanner sc = new Scanner(System.in);
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32
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List<Figure> l = new ArrayList<Figure>();
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33
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String s;
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34
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+
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35
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while ((s = sc.next()).equals("end")) {
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36
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if (s.equals("c")) {
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37
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double r = sc.nextDouble();
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38
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l.add(new Circle(r));
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39
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} else if (s.equals("r")) {
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40
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double width = sc.nextDouble();
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41
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double height = sc.nextDouble();
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42
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l.add(new Rectangle(width, height));
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43
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}
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44
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}
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45
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System.out.println(max(l));
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46
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}
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24
47
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```
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1
return間違い
answer
CHANGED
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@@ -19,6 +19,6 @@
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19
19
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ret = f;
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20
20
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}
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21
21
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}
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22
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-
return
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22
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+
return ret;
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23
23
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}
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24
24
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```
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