缁忓吀鎺掑簭绠楁硶鈥斺€斿爢鎺掑簭
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馃捇鍩烘湰鎬濇兂|婕旂ず|绠楁硶浠g爜|鎬ц兘
鍫?/strong>
Heap
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姣忎釜缁撶偣涓嶅皬浜庡乏鍙冲瀛愮粨鐐圭殑绉颁负鈥滃ぇ鏍瑰爢鈥濓紝姣忎釜缁撶偣涓嶅ぇ浜庡乏鍙冲瀛愮粨鐐圭殑绉颁负鈥滃皬鏍瑰爢鈥濄€?/span>
鍫嗘帓搴?/strong>
Heap Sort
鍫嗘帓搴忥紙Heap Sort锛夋槸涓€绉嶉€夋嫨鎺掑簭锛屽湪鎺掑簭杩囩▼涓彲灏嗕唬鎺掓暟鎹湅浣滀负涓€妫靛畬鍏ㄤ簩鍙夋爲锛屼富瑕佹帓搴忚繃绋嬪垎涓?/span>鏋勫缓鍫?/span>鍜?/span>閲嶆瀯鍫?/span>涓や釜鏂归潰銆?/span>
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浠ユ暟鎹?銆?銆?銆?銆?銆?銆?銆?銆?涓轰緥
鉃?nbsp; 鉃?/span>
鉃?nbsp; 鉃?/span>
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馃搫C++浠g爜
1#include<iostream>
2using namespace std;
3void HeapAdjust(int a[], int i, int j)
4{
5 int t, k;
6 t = a[i]; k = 2 * i + 1;
7 while (k <= j)
8 {
9 if (k < j&&a[k] < a[k + 1])k = k + 1;
10 if (t >= a[k])break;
11 a[i] = a[k]; i = k; k = 2 * i + 1;
12 }
13 a[i] = t;
14}
15void HeapSort(int a[], int n)
16{
17 for (int i = (n-1) / 2; i >= 0; i--)HeapAdjust(a, i, n-1); //璋冩暣鍫?/span>
18 for (int j = n - 1; j > 0; j--) //閲嶅缓鍫?/span>
19 {
20 swap(a[0], a[j]);
21 HeapAdjust(a, 0, j - 1);
22 }
23}
24int main()
25{
26 int a[9] = { 7,4,3,9,5,8,2,6,1 };
27 HeapSort(a, 9);
28 for (int i = 0; i < 9; i++)
29 cout << a[i] << " ";
30
31 return 0;
32}
馃搫Python浠g爜
1def HeapAdjust(nums,i,j):
2 t=a[i];k=2*i+1
3 while k<=j:
4 if k<j and nums[k]<nums[k+1]:k+=1
5 if t>=nums[k]:break
6 nums[i]=nums[k];i=k;k=2*i+1;nums[i]=t
7def HeapSort(nums):
8 for i in range(int((len(nums)-1)/2))[::-1]:HeapAdjust(nums,i,len(nums)-1)
9 for j in range(len(nums))[:0:-1]:
10 nums[0],nums[j]=nums[j],nums[0]
11 HeapAdjust(nums,0,j-1)
12a=[7,4,3,9,5,8,2,6,1]
13HeapSort(a)
14print(a)
馃搫Java浠g爜
1package text;
2
3public class HeapSort {
4
5 public static void main(String[] args) {
6 int a[]={7,4,3,9,5,8,2,6,1};
7 Sort(a);
8 ShowArr(a);
9 }
10 public static void HeapAdjust(int a[],int i,int j){
11 int t,k;t=a[i];k=2*i+1;
12 while(k<=j){
13 if(k<j&&a[k]<a[k+1])k=k+1;
14 if(t>=a[k])break;
15 a[i]=a[k];i=k;k=2*i+1;
16 }
17 a[i]=t;
18 }
19 public static void Sort(int a[]){
20 for(int i=(a.length-1)/2;i>=0;i--)HeapAdjust(a,i,a.length-1);
21 for(int j=a.length-1;j>0;j--){
22 Swap(a,0,j);
23 HeapAdjust(a,0,j-1);
24 }
25 }
26 public static void Swap(int a[],int i,int j){
27 int temp=a[i];a[i]=a[j];a[j]=temp;
28 }
29 public static void ShowArr(int a[]){
30 for(int x:a)
31 System.out.print(x+" ");
32 System.out.println();
33 }
34
35}
鎬ц兘
鍫嗘帓搴忔槸涓嶇ǔ瀹?/strong>鐨勬帓搴忕畻娉曪紝骞冲潎鏃堕棿澶嶆潅搴︿负O(nlogn)锛岀┖闂村鏉傚害涓?span>O(1)
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