Pointed Angle: Hill Sort

package D_common;

import java.util.Scanner;

public class 希尔排序 {
    public static void main(String[] args) {
        // 10 5 8 6 4 2 1 3 10 7 9
        Scanner scanner = new Scanner(System.in);
        int n = scanner.nextInt();
        int arr[] = new int[n];
        for (int i = 0; i < arr.length; i++) {
            arr[i] = scanner.nextInt();
        }

        shellSort(arr);

        for (int i : arr) {
            System.out.print(i + " ");
        }

    }

    private static void shellSort(int[] arr) {
        //gap增量
        for (int gap = arr.length / 2; gap > 0; gap /= 2) {

            for (int i = gap; i < arr.length; i++) {

                for (int j = i - gap; j >= 0; j = j - gap) {
                    if (arr[j] > arr[j + gap]) {
                        int temp = arr[j];
                        arr[j] = arr[j + gap];
                        arr[j + gap] = temp;
                    }
                }

            }

        }
    }


}

enter:

10

5 8 6 4 2 1 3 10 7 9

output:

1 2 3 4 5 6 7 8 9 10