import java.util.Arrays;
import java.util.Comparator;
import java.util.stream.IntStream;

public class Sample {
  public static void main(String[] args) {
    // 오름차순 정렬
    int[] array = {5, 1, 3, 2, 4};
    Arrays.sort(array);
    System.out.println(Arrays.toString(array));

    // 내림차순 정렬 (for문 활용)
    int[] array2 = {5, 1, 3, 2, 4};
    Arrays.sort(array2);
    
    for (int i = 0; i < array2.length / 2; i++) {
      int temp = array2[i];
      array2[i] = array2[array2.length - 1 - i];
      array2[array2.length - 1 - i] = temp;
    }
    System.out.println(Arrays.toString(array2));

    // Stream 활용
    int[] sortedArray = IntStream.of(array)
        .boxed()
        .sorted(Comparator.reverseOrder())
        .mapToInt(Integer::intValue)
        .toArray();
    System.out.println(Arrays.toString(sortedArray));
  }
}