Java实现希尔排序

public class ShellSort {

    public static void shellSort(int[] list){
    int d = list.length;
    int temp = 0;
    while(true){
        d = (int)Math.ceil(d/2);//保证向上取整  的d1 为double
        //int d = (int)d1;
        for(int x=0;x<d;x++){
            //插入排序
            for(int i=x+d;i<list.length;i+=d){
                int j = i - d;//j定义在外面  因为最后要完成交换
                temp = list[i];
                for(;j>=0&&temp<list[j];j-=d){
                    list[j+d] = list[j];
                }
                list[j+d] = temp;
            }
        }
        if(d==1)
            break;
    }
}
public static void main(String[] args) {
    int [] list = {3,2,1,4,5,8,9};
    shellSort(list);
    for(int i=0;i<list.length;i++){
        System.out.print(list[i]+" ");
    }

}

}