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| 1 | +'''java |
| 2 | +import java.io.BufferedReader; |
| 3 | +import java.io.InputStreamReader; |
| 4 | +import java.util.ArrayDeque; |
| 5 | +import java.util.Deque; |
| 6 | +import java.util.StringTokenizer; |
| 7 | + |
| 8 | +public class Main { |
| 9 | + public static void main(String[] args) throws Exception { |
| 10 | + BufferedReader br = new BufferedReader(new InputStreamReader(System.in)); |
| 11 | + StringTokenizer st = new StringTokenizer(br.readLine()); |
| 12 | + StringBuilder sb = new StringBuilder(); |
| 13 | + int T = Integer.parseInt(st.nextToken()); |
| 14 | + |
| 15 | + for (int t = 0; t < T; t++) { |
| 16 | + Deque<Integer> list = new ArrayDeque<>(); |
| 17 | + String order = br.readLine(); |
| 18 | + String s = br.readLine(); |
| 19 | + String num = br.readLine(); |
| 20 | + num = num.substring(1, num.length() - 1); |
| 21 | + |
| 22 | + if (!num.isEmpty()) { |
| 23 | + StringTokenizer st2 = new StringTokenizer(num, ","); |
| 24 | + while (st2.hasMoreTokens()) { |
| 25 | + list.add(Integer.parseInt(st2.nextToken())); |
| 26 | + } |
| 27 | + } |
| 28 | + boolean front = true; |
| 29 | + boolean isfinished = false; |
| 30 | + for (int o = 0; o < order.length(); o++) { |
| 31 | + char c = order.charAt(o); |
| 32 | + if (c == 'R') |
| 33 | + front = !front; |
| 34 | + else { |
| 35 | + if (list.isEmpty()) { |
| 36 | + sb.append("error"); |
| 37 | + isfinished = true; |
| 38 | + break; |
| 39 | + } |
| 40 | + if (front) |
| 41 | + list.pollFirst(); |
| 42 | + else |
| 43 | + list.pollLast(); |
| 44 | + } |
| 45 | + } |
| 46 | + if (!isfinished) { |
| 47 | + sb.append("["); |
| 48 | + while (!list.isEmpty()) { |
| 49 | + if (front) |
| 50 | + sb.append(list.poll()); |
| 51 | + else sb.append(list.pollLast()); |
| 52 | + if (!list.isEmpty()) |
| 53 | + sb.append(","); |
| 54 | + } |
| 55 | + sb.append("]"); |
| 56 | + } |
| 57 | + sb.append("\n"); |
| 58 | + } |
| 59 | + |
| 60 | + System.out.println(sb.toString()); |
| 61 | + } |
| 62 | +} |
| 63 | +''' |
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