privatestaticvoidHeapSort() { BuildHeap();//将原始序列建成一个堆 while( arraySize>1) { arraySize--; Exchange (0, arraySize );//将最大值放在数组的最后 DownHeap (0);//将序列从0到n-1看成一个新的序列,重新建立堆 } } privatestaticvoidBuildHeap() { for(intv=arraySize/2-1; v>=0;...
Insertion sortiterates, consuming one input element each repetition, and growing a sorted output list. Each iteration, insertion sort removes one element from the input data, finds the location it belongs within the sorted list, and inserts it there. It repeats until no input elements remain. ...
The Heap-Merge SortSuman Nath
heapsort (void *base, size_t nmemb, size_t size, int (*compar ) (const void *, const void * )) int mergesort (void *base, size_t nmemb, size_t size, int (*compar ) (const void *, const void * ))DescriptionThe qsort function is a modified partition-exchange sort, or quick...
Quicksort,Mergesort,and Heapsort Quicksort Fastestknownsortingalgorithminpractice Caveats:notstable Vulnerabletocertainattacks Averagecasecomplexity O(NlogN) Worst-casecomplexity O(N 2 ) Rarelyhappens,ifcodedcorrectly QuicksortOutline Divideandconquerapproach ...
Heap Sort public class Solution { private static int[] a; private static int n; private static int left; private static int right; private static int largest; public void sortIntegers2(int[] A) { a = A; buildheap(a); for(int i=n;i>0;i--){ ...
堆排序(Heap Sort)是一种树形选择排序,是对直接选择排序的有效改进。 二、思想: 起初要把排序的数的序列看成是一棵顺序存储的二叉树,调整它们的存储序,让其成为一个堆,这时堆的根节点的数最大 而后将根节点与堆的最后一个节点交换,然后对前面(n-1)个数从新调整让其重新调整为一个堆,以此类推,知道只有两 ...
While sorting randomly ordered data is a well-studied problem which has produced a plethora of useful results over the last five decades such as Quicksort, Merge Sort, and Heap Sort (see [9] for a summary), the importance of sorting almost sorted data quickly has just emerged over the ...
堆排序HeapSorttemplate <class Item> void fixDown (Item a[], int k, int n) { while (2*k+1 < n) { int child = 2*k + 1; if ((child+1<n) && (a[child]<a[child+1]) child++; if (a[k] < a[child]) { exch(a[k], a[child]); k = child; } else return; } ...
MergeSort(a, mid+1, last, temp); MergeArr(a, first, mid, last, temp); } } 堆排序(HeapSort) 堆排序有两个主要过程,建堆以及之后的堆结构维护,主要函数则是下滤函数(downPerlocate) C++实现代码如下: voiddownPercolate(vector<int>& nums ,intindex,intend){intindex_temp =index;while(1){int...