ShellSort.java

import static java.util.stream.Collectors.toList;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.Collections;
import java.util.List;

class ShellSort {
 private static final BufferedReader reader = 
 new BufferedReader(new InputStreamReader(System.in));

 private static List<String> getStrategy(List<String> input, List<String> target) {
 int i = input.size() - 1;
 int j = target.size() - 1;
 while (i >= 0 && j >= 0) {
 while (j >= 0 && !target.get(i).equals(input.get(j))) {
 j--;
 }
 if (j < 0) {
 break;
 }
 i--;
 j--;
 }
 List<String> output = target.subList(0, i + 1);
 Collections.reverse(output);
 return output;
 }

 public static void main(String[] args) throws IOException {
 int n = Integer.valueOf(reader.readLine().trim());
 for (int i = 0; i < n; ++i) {
 int count = Integer.valueOf(reader.readLine().trim());
 List<String> input = reader.lines().limit(count).collect(toList());
 List<String> target = reader.lines().limit(count).collect(toList());
 getStrategy(input, target).forEach(System.out::println);
 System.out.println();
 }
 }
}