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public class MySingleton { private static MySingleton instance; private MySingleton(){} public static synchronized MySingleton getInstance(){ // 경합조건 해결을 위해 synchronized 추가 if(instance == null){ instance = new MySingleton(); } return...
안드로이드 Gradle 플러그인이 3.0.0 으로 업데이트되면서 마이그레이션 이슈가 생겼다. https://developer.android.com/studio/build/gradle-plugin-3-0-0-migration.html#variant_api gradle 빌드파일을 열어 아래와 같이 변경해준다. Use all() instead of each() Use outputFileName instead of output.outputFile if you change only file name (that is your case) 종속성...
Hello KyoBin, Ready for a change? Please meet IntelliJ IDEA 2018.1 – our first major update of this year! This new release brings with it significant improvements to supported languages, frameworks, version...
<!– https://mvnrepository.com/artifact/com.google.guava/guava –> <dependency> <groupId>com.google.guava</groupId> <artifactId>guava</artifactId> <version>24.0-jre</version> </dependency> List<OnlineMenuVO> selectMenu2List = this.uiMainService.selectMenu2List(this.custCoCd); Predicate<OnlineMenuVO> lvl1ListPredicate = new Predicate<OnlineMenuVO>() { @Override public boolean apply(@Nullable OnlineMenuVO onlineMenuVO) { if(onlineMenuVO.getClsLvl() == 1){ return true;...
바이너리 트리 레벨선회 구현하기 Given a binary tree, return the level order traversal of its nodes’ values. (ie, from left to right, level by level). For example: Given binary tree [3,9,20,null,null,15,7], 3 /...
바이너리 트리 후위선회 구현하기 Given a binary tree, return the postorder traversal of its nodes’ values. For example: Given binary tree [1,null,2,3], 1 \ 2 / 3 return [3,2,1]. Note: Recursive solution is trivial,...
바이너리 트리 중위순회 구현하기 Given a binary tree, return the inorder traversal of its nodes’ values. For example: Given binary tree [1,null,2,3], 1 \ 2 / 3 return [1,3,2]. Note: Recursive solution is trivial, could...
바이너리 트리에서 전위순회 구현해보기 Given a binary tree, return the preorder traversal of its nodes’ values. For example: Given binary tree [1,null,2,3], 1 \ 2 / 3 return [1,2,3]. Note: Recursive solution is trivial, could...
public class mainClass { public static void main(String[] args){ ArrayList arrayList = new ArrayList(); arrayList.add(“10”); arrayList.add(“20”); arrayList.add(“30”); System.out.println(arrayList.getSize()); System.out.println(arrayList.toString()); //arrayList.indexOf(2); arrayList.addIndex(1, “15”); System.out.println(arrayList.toString()); arrayList.remove(2); System.out.println(arrayList.toString()); } } public class...
주어진 문자를 역순으로 반환하는 작성하라 Write a function that takes a string as input and returns the string reversed. Example: Given s = “hello”, return “olleh”. class Solution { public...
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