June 2018
Beginner to intermediate
184 pages
3h 30m
Korean
Content preview from 자바로 배우는 핵심 자료구조와 알고리즘: 기술 면접에 필요한 실용주의 자료구조와 알고리즘
Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.
68
자바로 배우는 핵심 자료구조와 알고리즘
[그림
6
-
2
]는 자바 언어에 대한 위키피디아 페이지
(
http
://
thinkdast
.
com
/
java
)
의
DOM
트리 스
크린샷입니다. 회색으로 강조 표시된 요소는 글의 본문 첫 단락으로,
id="mw-content-text"
인
<div>
요소에 포함됩니다. 이 요소
ID
를 사용하여 다운로드한 글의 본문을 식별합니다.
그림
6-2
크롬
DOM
검사기의 스크린샷
6.3
jsoup
사용하기
jsoup
라이브러리를 사용하면 웹 페이지를 다운로드하고 파싱하고
DOM
트리를 탐색하기가
쉽습니다. 예제는 다음과 같습니다
(파일명:
WikiNodeExample.java
)
.
String url
=
"
http
://
en
.
wikipedia
.
org
/
wiki
/
Java
_(
programming
_
language
)";
69
6
장
트리 순회
//
문서를
다운로드하고
파싱하기
Connection conn
=
Jsoup
.
connect
(
url
);
Document doc
=
conn
.
get
();
//
내용을
선택하고
단락
추출하기
Element content
=
doc
.
getElementById ...
Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
and much more.
Read now
Unlock full access
More than 5,000 organizations count on O’Reilly
O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.