// range heap example #include <iostream> // std::cout #include <algorithm> // std::make_heap, std::pop_heap, std::push_heap, std::sort_heap #include <vector> // std::vector int main () { int myints[] = {10,20,30,5,15}; std::vector<int> v(myints,myints+5); std...
3. 优化策略2:阈值的选取 同样是参考归并排序的优化策略,归并排序可以通过判断数组的长度,设定一个阈值。 数组长度大于阈值的,使用归并排序策略。 数组长度小于阈值的,使用直接插入排序。 通过这种方式,归并排序避免了针对小数组时候的递归(递归层次增加最多的场景,就是大量的小数组),从而减轻了JVM的负担。 1publiccl...
selection sort is a sorting algorithm, specifically anin-place comparison sort. It has O(n2) time complexity, making it inefficient on large lists, and generally performs worse than the similar insertion sort. Selection sort is noted for its simplicity, and it has performance advantages over more...
list的内存空间不是连续的 标准库算法中的操作需要随机访问迭代器 这种也是OOP的方法的处理方式, 也就是把datas和methods关联到一起 相比较vector等其他容器, sort的方式就是GP(Generic Programming)的方式了: 也是说, GP的思想是把data是和methods分开来, 容器自己搞自己的, 算法自己搞自己的, 然后两者通过迭代器...
#include <vector> usingnamespacestd; // Insert the given key into the sorted stack while maintaining its sorted order. // This is similar to the recursive insertion sort routine voidsortedInsert(stack<int>&stack,intkey) { // base case: if the stack is empty or ...
#include<bits/stdc++.h>using namespace std;voidbucketSort(float*array,intsize){vector<float>bucket[size];// insert elements into different buckets.for(inti=0;i<size;i++){bucket[int(size*array[i])].push_back(array[i]);}// sort individual buckets.for(inti=0;i<size;i++){sort(bucket...
(min heap)priority_queue<ll, vector<ll>, greater<ll>>pq;//push k+1 first element of the array//into the priority queue.for(ll i=0; i<=k; i++) pq.push(arr[i]);//declare index variable with 0.ll index=0;//iterate through rest elements and//store k+1 elements into the ...
Worst time complexity : O(nlog(n)) Average time complexity : O(nlog(n)) Space complexity : O(1) Stable : No Iterator Required : Random access iterator */ #include <algorithm> #include <functional> #include <vector> #include <iostream> #include <ctime> #include <Windows.h> ...
Graph(vector<Edge> const &edges, int n) { // resize the vector to hold `n` elements of type `vector<int>` adjList.resize(n); // initialize indegree vector<int> temp(n, 0); indegree = temp; // add edges to the directed graph for (auto &edge: edges) { // add an edge from...
The Patience sort implementation is written using the C++ standard template library, and uses their priority queue and vector data structures. The GNU Quicksort implementation includes the well-known Sedgewick optimizations for efficiency [10]: there is no recursion, the split key is chosen from ...