import com.google.common.base.Function;
import com.google.common.collect.Iterables;
import com.google.common.collect.Lists;
import java.io.IOException;
import java.nio.file.Files;
import java.nio.file.Path;
import java.util.List;
public class TreeParser {
private static List<Integer> parseLine(String line) {
String[] tokens = line.trim().split(" ");
return Lists.newArrayList(Iterables.transform(Lists.newArrayList(tokens), new Function<String, Integer>() {
public Integer apply(String s) {
return Integer.parseInt(s);
}
}
));
}
public static Tree parseTree(Path path) throws IOException {
Tree.Builder builder = Tree.Builder.aTreeBuilder();
Files.lines(path)
.forEach(line -> builder.withRow(parseLine(line)));
return builder.build();
}
}