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BAEKJOON 1406
48 lines (43 loc) · 1.39 KB
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BAEKJOON 1406
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import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.InputStreamReader;
import java.io.OutputStreamWriter;
import java.util.LinkedList;
import java.util.ListIterator;
import java.util.StringTokenizer;
public class Main {
public static void main(String[] args) throws Exception{
BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
BufferedWriter wr = new BufferedWriter(new OutputStreamWriter(System.out));
LinkedList<Character> list = new LinkedList<>();
ListIterator<Character> iter = list.listIterator();
String str = br.readLine();
for (int i = 0; i < str.length(); i++) {
iter.add(str.charAt(i));
}
int N = Integer.parseInt(br.readLine());
for (int i = 0; i < N; i++) {
StringTokenizer st = new StringTokenizer(br.readLine());
str = st.nextToken();
if(str.equals("L")) {
if(iter.hasPrevious()) // 앞에 데이터가 있으면 ture
iter.previous(); // 위치를 한칸 앞으로 이동
}else if(str.equals("D")) {
; if(iter.hasNext())
iter.next();
}else if(str.equals("B")) {
if(iter.hasPrevious()){
iter.previous();
iter.remove();
}
}else if(str.equals("P")) {
char c = st.nextToken().charAt(0);
iter.add(c);
}
}
for (Character character : list) {
wr.write(character);
}
wr.flush();
}
}