https://swexpertacademy.com/main/code/problem/problemDetail.do?problemLevel=3&contestProbId=AW37UDPKCgQDFATy&categoryId=AW37UDPKCgQDFATy&categoryType=CODE&problemTitle=&orderBy=FIRST_REG_DATETIME&selectCodeLang=ALL&select-1=3&pageSize=10&pageIndex=5 SW Expert Academy SW 프로그래밍 역량 강화에 도움이 되는 다양한 학습 컨텐츠를 확인하세요! swexpertacademy.com //set 삭제 set.remove(); //set 안에 값 확인 set.contains(); import java.uti..