Arrays - DS hackerrank Solution in java

import java.io.*;import java.math.*;import java.security.*;import java.text.*;import java.util.*;import java.util.concurrent.*;import java.util.function.*;import java.util.regex.*;import java.util.stream.*;import static java.util.stream.Collectors.joining;import static java.util.stream.Collectors.toList;class Result {    public static List<Integer> reverseArray(List<Integer> a) {        List<Integer> res = new ArrayList<Integer>();        for(int i=a.size()-1;i>=0;i--){            res.add(a.get(i));        }        return res;    }}public class Solution {    public static void main(String[] args) throws IOException {        BufferedReader bufferedReader = new BufferedReader(new InputStreamReader(System.in));        BufferedWriter bufferedWriter = new BufferedWriter(new FileWriter(System.getenv("OUTPUT_PATH")));        int arrCount = Integer.parseInt(bufferedReader.readLine().trim());        List<Integer> arr = Stream.of(bufferedReader.readLine().replaceAll("\\s+$", "").split(" "))            .map(Integer::parseInt)            .collect(toList());        List<Integer> res = Result.reverseArray(arr);        bufferedWriter.write(            res.stream()                .map(Object::toString)                .collect(joining(" "))            + "
"        );        bufferedReader.close();        bufferedWriter.close();    }}