insert(3); // 验证set中元素的值 std::cout << "mySet after inserts: "; for (const auto& elem : mySet) { std::cout << elem << " "; } std::cout << std::endl; // 使用赋值运算符=对set进行赋值 std::set<int> anotherSet = {4, 5...
#include <cassert>#include <iostream>#include <set>intmain(){std::set<int>set;autoresult_1=set.insert(3);assert(result_1.first!=set.end());// it is a valid iteratorassert(*result_1.first==3);if(result_1.second)std::cout<<"insert done\n";autoresult_2=set.insert(3);assert(re...
set.end(),[&out](constT&element){out<<", "<<element;});returnout<<" }";}intmain(){std::set<int>set{1,5,3};std::cout<<set<<'\n';set.insert(2);std::cout<<set<<'\n';set.erase(1);std::cout<<set<<"\n\n";std::set<int>keys{3,4};for(intkey:keys){if(set.cont...
注意： 有序序列，顺序一致 返回值为接收并集数据的迭代器的最后一个元素迭代器地址 差集 #include<iost...
Thus, with the help of the std::set_union algorithm, we can append the portions of strings to another string object. #include <algorithm> #include <iostream> #include <iterator> using std::cin; using std::cout; using std::endl; using std::string; int main() { string s1("hello");...
高效的使用stl::map和std::set 1、低效率的用法 // 先查找是否存在,如果不存在,则插入 if (map.find(X) == map::end()) // 需要find一次 { map.insert(x); // 需要find...一次 } // 下面这段代码是一个意思 if (0 == map.count(X) // 需要find一次 { map.insert(x); // 需...
std::string s5 (“Another character sequence”, 12); //已知字符串,通过截取指定长度来创建一个string std::string s6a (10, ‘x’); //指定string长度,与一个元素,则默认重复该元素创建string std::string s6b (10, 42); // 42 is the ASCII code for ‘*’ //通过ASCII码来代替s6a中的指定元...
Generic Algorithms:STL provides a set of algorithms (likestd::find,std::sort, etc.) that work on different containers. These algorithms use iterators to work seamlessly across diverse containers. Manipulation:Iterators are essential when you want to insert or erase elements at specific positions wit...
insert(stdgpu::make_device(blocks), stdgpu::make_device(blocks + n)); } // Further functions private: stdgpu::unordered_set<short3> set; // Further members };Native code. More complex operations such as the creation of the duplicate-free set of updated blocks or other algorithms can ...
We can even use the standard algorithmstd::copy, which copies the elements from the specified range to another container. The following code usesstd::inserterto constructs astd::insert_iteratorfor the set container asstd::back_inserterandstd::front_inserterdo not work on sets. ...