[백준] 1406 에디터 #JAVA

 

BAEKJOON [1406] 에디터

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코드

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import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.OutputStreamWriter;
import java.util.LinkedList;
import java.util.ListIterator;

public class Main {

	public static void main(String[] args) throws IOException {
		BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
		BufferedWriter bw = new BufferedWriter(new OutputStreamWriter(System.out));
		String input = br.readLine();
		LinkedList<Character> list = new LinkedList<Character>();
		
		//리스트에 입력값 넣기
		for (int i = 0; i < input.length(); i++) {
			list.add(input.charAt(i));
		}
		//라운드
		int round = Integer.parseInt(br.readLine());
		
		ListIterator<Character> liter = list.listIterator();
		
		while (liter.hasNext()) {//커서이동
			liter.next();
		}
		
		for (int i = 0; i < round; i++) {
			String commend = br.readLine();
			char cmd = commend.charAt(0);
			if('L'== cmd) {
				if(liter.hasPrevious()) liter.previous();
				
			}else if('D'==cmd) {
				if(liter.hasNext()) liter.next();
				
			}else if('B'==cmd) {
				if(liter.hasPrevious()) {
					liter.previous();
					liter.remove();
				}
			}else if('P'==cmd) {
				liter.add(commend.charAt(2));
			}
		}
		
		for (char c : list) {
			bw.append(c);
		}
		
		bw.flush();
		bw.close();
	}

}

 

 

 

풀이

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• LinkedList 사용
• [JAVA] LinkedList를 접근 제어하는 ListLiterator

 

 

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