To understand programming better, you must understand the memory allocation areas called the “stack” and the “heap.” Any local variables declared inside a function have allocated memory in an area known as the stack. When you exit from a function, the variables on the stack are cleaned up...
swap(&arr[i], &arr[largest]);// 交换heapify(arr, n, largest);// 递归调整子堆} }// 主函数:堆排序voidheapSort(intarr[],intn){// 构建最大堆for(inti = n /2-1; i >=0; i--) heapify(arr, n, i);// 提取元素并重新调整堆for(inti = n -1; i >=0; i--) { swap(&arr[...
堆排序 堆排序(Heapsort)是指利用堆这种数据结构所设计的一种排序算法。堆积是一个近似完全二叉树的结构,并同时满足堆积的性质:即子结点的键值或索引总是小于(或者大于)它的父节点。堆排序可以说是一种利用堆的概念来排序的选择排序。分为两种方法: 大顶堆:每个节点的值都大于或等于其子节点的值,在堆排序算法中...
C 语言实现堆排序 (Heap Sort) 堆排序是一种基于「堆」这一数据结构的排序算法。堆是一种近似完全二叉树的结构,分为大顶堆和小顶堆这两种。 大顶堆:子节点的值总是小于其父节点的值。 小顶堆:子节点的值总是大于其父节点的值。 如果使用大顶堆的话,最后的排序结果会是升序;如果采用小顶堆的话,最后的...
[l+1])l++;// 左右两孩子中选择较大者,即m_heap[l+1]if(tmp>=a[l])break;// 调整结束else// 交换值{a[c]=a[l];a[l]=tmp;}}}/** 堆排序(从小到大)** 参数说明:* a -- 待排序的数组* n -- 数组的长度*/voidheap_sort_asc(inta[],intn){inti;// 从(n/2-1) --> 0逐次...
堆排序(Heapsort)是指利用堆这种数据结构所设计的一种排序算法。堆积是一个近似完全二叉树的结构,并同时满足堆积的性质:即子结点的键值或索引总是小于(或者大于)它的父节点。算法描述 将初始待排序关键字序列(R1,R2….Rn)构建成大顶堆,此堆为初始的无序区; ...
Build with g++ -std=c++03 -O3 sorttest.cpp on Centos 7 x64, gcc version is 8.3.1 Functions name with bao_ perfix are in sortlib.hpp header Functions name with grail_ perfix are in grailsort.hpp header std_qsort is the qsort function in stdlib.h header Sorting 2,000,000 TestClass ...
voidsort_heap( RandIter start, RandIter end ); { while (start != end) std::pop_heap(start, end--); } 2.通过使用预定义函数进行比较: 用法: template voidsort_heap(RandIter start, RandIter end, Comp cmpfn);start, end:the range of elements to sortcomp:comparison function object (i....
C C++ # Heap Sort in python def heapify(arr, n, i): # Find largest among root and children largest = i l = 2 * i + 1 r = 2 * i + 2 if l < n and arr[i] < arr[l]: largest = l if r < n and arr[largest] < arr[r]: largest = r # If root is not largest, ...
The make_heap function converts the range [First..Last) into a heap. The sort_heap function sorts a sequence that was created using the make_heap function. The push_heap function inserts a new value into the heap. The pop_heap function swaps the first and last elements in the heap ...