回答編集履歴
1
answer
CHANGED
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@@ -39,7 +39,7 @@
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39
39
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.values().stream().filter(e->e.size()==1)
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40
40
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.flatMap(List::stream).collect(Collectors.toList());
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41
41
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42
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-
staffList3.
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42
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+
staffList3.forEach(System.out::println);
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43
43
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}
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44
44
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}
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45
45
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