LarrysArray.java

import java.io.*;
import java.math.*;
import java.security.*;
import java.text.*;
import java.util.*;
import java.util.concurrent.*;
import java.util.regex.*;

public class Solution {

    // Complete the larrysArray function below.
    static String larrysArray(int[] A) {

        int parity = 0;

        for (int i = 0; i < A.length; i++) {
            for (int j = i + 1; j < A.length; j++) {
                if (A[i] > A[j]) parity++;
            }
        }

        return parity % 2 == 0 ? "YES" : "NO";

    }

    private static final Scanner scanner = new Scanner(System.in);

    public static void main(String[] args) throws IOException {
        BufferedWriter bufferedWriter = new BufferedWriter(new FileWriter(System.getenv("OUTPUT_PATH")));

        int t = scanner.nextInt();
        scanner.skip("(\r\n|[\n\r\u2028\u2029\u0085])?");

        for (int tItr = 0; tItr < t; tItr++) {
            int n = scanner.nextInt();
            scanner.skip("(\r\n|[\n\r\u2028\u2029\u0085])?");

            int[] A = new int[n];

            String[] AItems = scanner.nextLine().split(" ");
            scanner.skip("(\r\n|[\n\r\u2028\u2029\u0085])?");

            for (int i = 0; i < n; i++) {
                int AItem = Integer.parseInt(AItems[i]);
                A[i] = AItem;
            }

            String result = larrysArray(A);

            bufferedWriter.write(result);
            bufferedWriter.newLine();
        }

        bufferedWriter.close();

        scanner.close();
    }
}