真正减慢它的是std :: vector。 谢谢 struct SHAPECONTOUR{ std::vector<USERFPOINT> UserPoints; std::vector<DOUBLEPOINT> DrawingPoints; SHAPEOUTLINE Outline; }; I call UpdateShape() every time a point is added but I assure you my other algorithms are fast... void OGLSHAPE::UpdateShape() {...
2. 编写代码遍历 std::vector 为了去重,我们需要遍历 std::vector 中的元素。这可以通过使用迭代器或范围for循环来实现。 3. 在遍历过程中检查并去除重复元素 在遍历过程中,我们可以使用一个辅助的数据结构(如 std::unordered_set)来跟踪已经遇到的元素。如果当前元素已经在 std::unordered_set 中,则它是一个重...
Use std::unique to eliminate duplicate values : unique « STL Algorithms Modifying sequence operations « C++ TutorialC++ Tutorial STL Algorithms Modifying sequence operations unique #include <iostream> using std::cout; using std::endl; #include <algorithm> #include <vector>...
LeetCode 26 Remove Duplicates from Sorted Array [Array/std::distance/std::unique] <c++> 给出排序好的一维数组,删除其中重复元素,返回删除后数组长度,要求不另开内存空间。 C++ 很简单的题目,但是第一发RE了,找了很久问题出在哪。最后单步调试发现vector.size()返回值是unsigned型的。unsigned型和int型数据运...
// Returns number of CDs both Jack AND Jill have:intcountDuplicates(constint&jackCDCount,conststd::vector<int> &catalog) {// For every position in Jack's catalog of CDs, it will try to find the same CD in Jill's section of the vector.intsumOfDuplicates = 0;for(inti = 0; i < ...
used_constraints.clear();thread_localstaticvector<box> solns;thread_localstaticvector<box> box_stack; solns.clear(); box_stack.clear(); box_stack.push_back(b);do{ DREAL_LOG_INFO <<"naive_icp::solve - loop"<<"\t"<<"box stack Size = "<< box_stack.size(); ...
duplicates and hence not removed. // C++ program to demonstrate the use of std::unique#include<iostream>#include<vector>#include<algorithm>usingnamespacestd;intmain(){vector<int> v = {1,1,3,3,3,10,1,3,3,7,7,8}, i;vector<int>::iterator ip;// Using std::uniqueip =std::unique...
duplicatesandhencenotremoved. // C++ program to demonstrate the use of std::unique #include<iostream> #include<vector> #include<algorithm> usingnamespacestd; intmain() { vector<int>v={1,1,3,3,3,10,1,3,3,7,7,8},i; vector<int>::iterator ip; ...
using Ci = std::complex<int>; constexpr std::array<Ci, 5> source { Ci {1, 0}, Ci {0, 1}, Ci {2, -1}, Ci {3, 2}, Ci {4, -3} }; std::vector<std::complex<int>> target; std::ranges::remove_copy_if( source, std::back_inserter(target), [](int imag) { return ...
#include <iostream> #include <algorithm> #include <vector> #include <string> #include <cctype> int main() { // remove duplicate elements std::vector<int> v{1,2,3,1,2,3,3,4,5,4,5,6,7}; std::sort(v.begin(), v.end()); // 1 1 2 2 3 3 3 4 4 5 5 6 7 auto last...