using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;namespace ConsoleApplication3
{class Program{static void Main(string[] args){List<int> seqlist = new List<int> { 42, 20,17, 27,13,8,17,48};HeadOrder(seqlist, 0, seqlist.Count - 1);}public void BubbleSort(List<int> sqList){}public static void CreadHeap(List<int> seqList, int low, int high){            int k;int j=0;int temp = 0;for (int i = high / 2; i >= low; i--){k = i;temp = seqList[i];j = 2 * k + 1;               while (j <= high){                  if (j < high && j + 1 <= high && seqList[j] < seqList[j + 1]){j++;}if (temp < seqList[j]){seqList[k] = seqList[j];                                          k = j;j = 2 * k + 1;}else{j = high + 1;}}seqList[k] = temp;}}public static void HeadOrder(List<int> seqlist, int low, int high){if (high <= low){return;}int temp = 0;CreadHeap(seqlist, 0, high);for (int i = seqlist.Count - 1; i > low; i--){temp = seqlist[0];seqlist[0] = seqlist[i];seqlist[i] = temp;CreadHeap(seqlist, 0, i-1);               }}}
}

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;namespace ConsoleApplication3
{class Program{static void Main(string[] args){List<int> seqlist = new List<int> { 42, 20,17, 27,13,8,17,48};HeadOrder(seqlist, 0, seqlist.Count - 1);}public void BubbleSort(List<int> sqList){int tmp = 0;for (int i = 0; i < sqList.Count -1; ++i){for (int j = i +1; j<sqList.Count; j++){if (sqList[i] < sqList[j]){tmp = sqList[i];sqList[i] = sqList[j];sqList[j] = tmp;}}}}public static void CreadHeap(List<int> seqList, int low, int high){int k;int j = 0;int temp = 0;for (int i = high / 2; i >= low; i--){k = i;j = 2 * k + 1;while (j <= high){temp = seqList[k];if (j < high&& j + 1 <= high&& seqList[j] < seqList[j + 1]){j++;}if (temp < seqList[j]){seqList[k] = seqList[j];seqList[j] = temp;k = j;j = 2 * k + 1;}else{j = high + 1;}}}}public static void HeadOrder(List<int> seqlist, int low, int high){if (high <= low){return;}int i = low;int temp = 0;CreadHeap(seqlist, 0, high);temp = seqlist[0];seqlist[0] = seqlist[high];seqlist[high] = temp;HeadOrder(seqlist, i, high - 1);}}
}