Ϸ ! Խϴ.
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6 ڸ û ̱淡 Ʈ 鿣 ̽ iosȰ ־µ
÷̶...javaΰ ...;;;
ڵƮ Ϸ pdf input log ΰ ְ Ǯ Ǿֳ
ڸ...
logϿ ° url Ʈ © output log °ų
1. apikey
2. ̵ top3
3.
Ǯ̴...α Ŭ 系ְ
α Ŭ Ʈ Ƽ...̶° ִ~ sql Լ
Map<String, Long> = Ʈͱٰ.stream()
.collect(Collectors.groupingBy(Log::getApiKey, Collectors.counting()));
װɷ θŰ ٽ ͷذ Ʈ
ϸ Ǵµ....ϴٰ...ħ
....java 8 Ǯ ٰؼ lamda ӽñ map.stream().foreach
ų system.out.println() foreachȿٰ ߵdz!
Ʈ ־?!ϴµ...ȵ ФФФФФФФ
.foreach µ....ٱ Ф finalȵ ;;;
ƿ...ִ°ž ̰... final Ǹ Ⱦ Ӹ Ф
ᱹ ͷ...
ƾ java map sortϳ Ҷ...
map->set->linked list -> sort -> iterator ...
ؼ ?Ф
Ǯ鼭......̷ key value ־ߵǴµ...ʹۿ ? ...sort
ư Ǯ ϰ?
ȸ ÷ֿ ϱ ...kcc̴...
Կ ȸ ~
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