집합
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[Java] Google Sets 클래스를 이용한 집합 구하기Programming/Java 2020. 5. 12. 10:48
HashSet savedList = getSavedList(); HashSet currentList = getCurrentList(); //대칭차 SetView setView = Sets.symmetricDifference(savedList, currentList); //교집합 Set retainList = Sets.intersection(currentList, setView); //차집합 Set difference = Sets.difference(currentList, setView); //합집합 Set union = Sets.union(currentList, setView); for(String item : union) { System.out.println(item); }