希尔排序的两个实现方法：交换法和移动法

• 懒得写思路了，直接上代码

懒得写思路了，直接上代码

public class ShellSort {
    public static void main(String[] args) {
        int[] arr = {8, 9, 1, 7, 2, 3, 5, 4, 6, 0};
        shellSort2(arr);
    }

    public static void shellSort(int[] arr) {
        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 -= gap) {
                    if (arr[j] > arr[j + gap]) {
                        int temp = arr[j];
                        arr[j] = arr[j + gap];
                        arr[j + gap] = temp;
                    }
                }
            }
            System.out.println(Arrays.toString(arr));
        }
    }

    public static void shellSort2(int[] arr) {
        for (int gap = arr.length / 2; gap > 0; gap /= 2) {
            for (int i = gap; i < arr.length; i++) {
                int j = i;
                int temp = arr[j];
                if (arr[j] < arr[j - gap]) {
                    while (j - gap >= 0 && temp < arr[j - gap]) {
                        arr[j]=arr[j-gap];
                        j-=gap;
                    }
                    arr[j]=temp;
                }
            }
            System.out.println(Arrays.toString(arr));
        }
    }
}