堆积排序法 C#

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace 堆积排序法
{
    class Program
    {
        static int[] data = { 0, 5, 6, 4, 8, 3, 2, 7, 1 };

        static void Main(string[] args)
        {
            int size = 9;
            Console.Write("初始数组:");
            for (int i = 1; i < size; i++)
            {
                Console.Write("["+data[i]+"] ");
            }
            Heap(data, size);//建立堆积树
            Console.Write("\n排序结果:");
            for (int i = 1;  i < size;  i++)
            {
                Console.Write("["+data[i]+"] ");
            }
            Console.WriteLine();
            Console.ReadKey();
        }
        public static void Heap(int[] data,int size)
        {
            int i, j, tmp;
            for ( i =(size/2);i>0; i--)//建立堆积树节点
            {
                Ad_heap(data, i, size - 1);
            }
            Console.Write("\n堆积内容:");
            for ( i = 1; i < size; i++)//原始堆积树内容
            {
                Console.Write("["+data[i]+"] ");
            }
            Console.WriteLine();
            for ( i = size-2; i>0 ; i--)//堆积排序
            {
                tmp = data[i + 1];
                data[i + 1] = data[1];
                data[1] = tmp;
                Ad_heap(data, 1, i);//处理剩余节点
                Console.Write("\n处理过程:");
                for (j = 1; j < size; j++)
                {
                    Console.Write("["+data[j]+"] ");
                }
            }
        }
        public static void Ad_heap(int [] data, int i, int size)
        {
            int j, tmp, post;
            j = 2 * i;
            tmp = data[i];
            post = 0;
            while (j<=size&&post==0)
            {
                if (j<size)
                {
                    if (data[j]<data[j+1])//找出最大节点
                    {
                        j++;
                    }
                }
                if (tmp>=data[j])//若树根较大,结束比较过程
                {
                    post = 1;
                }
                else
                {
                    data[j / 2] = data[j];//若树根较小,则继续比较
                    j = 2 * j;
                }
                data[j / 2] = tmp;//指定树根为父节点
            }
        }

    }
}

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转载自blog.csdn.net/Somewater_/article/details/103604402