#include "set.hpp" #include <set> #include <iostream> #include <string> #include <cassert> #include <chrono> #include <functional> #include <iomanip> // reference: http://www.cplusplus.com/reference/set/set/ st
1.http://www.cplusplus.com/reference/set/set/?kw=set 2.http://stackoverflow.com/questions/2620862/using-custom-stdset-comparator
也可用pb_ds自带的tree_order_statistics_node_update主要函数（std::set有的这个也有，就不列出了）：...
<set> std::set::get_allocator C++98 C++11 allocator_type get_allocator() const; Get allocator Returns a copy of the allocator object associated with theset. Parameters none Return Value The allocator. Member typeallocator_typeis the type of the allocator used by the container, defined insetas...
4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 // set::rbegin/rend#include <iostream>#include <set>intmain () {intmyints[] = {21,64,17,78,49}; std::set<int> myset (myints,myints+5); std::set<int>::reverse_iterator rit; std::cout <<"myset contains:";for(rit=my...
In a set, the value of an element also identifies it (the value is itself the key, of type T), and each value must be unique. The value of the elements in a set cannot be modified once in the container (the elements are always const), but they can be inserted or removed from th...
unordered_map http://www.cplusplus.com/reference/unordered_map/unordered_map/?kw=unordered_map 一、unordered_map的概念 unordered_map是存储<key, value>键值对的关联式容器,其允许通过keys快速的索引到与其对应的value。 在unordered_map中... STL标准库-容器-unordered_set ...
EN在 C++ 编程中，有时候我们需要在不进行拷贝的情况下传递引用，或者在需要引用的地方使用常量对象。为...
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); // 需要find一次 ...
http://www.cplusplus.com/reference/set/set/: iterator — a bidirectional iterator to const value_type → Reply Flyce 8 years ago, # | -15 As far as i know std::lower_bound works with complexity O(log n) * O(access_of_element), it is O(log n) for vectors, arrays, but ...