unordered_map<string, vector<string>>letters{//声母--韵母 组合{"B",{"a","o","i","u","ai","ei","ao","iao","ie","an","ian","en","in","ang","eng","ing"}}, {"P",{"a","o","i","u","ai","ei","ao","iao","ou","ie","an","ian",
std::cout << "插入\t\t" << mapInsertTime << "\t\t" << unorderedMapInsertTime << "\t\t\t" << (float)mapInsertTime / unorderedMapInsertTime << std::endl; std::cout << "顺序查找\t" << mapLookupTime << "\t\t" << unorderedMapLookupTime << "\t\t\t" << (float)mapL...
unordered_map<string, vector<string>>letters{//声母--韵母 组合{"B",{"a","o","i","u","ai","ei","ao","iao","ie","an","ian","en","in","ang","eng","ing"}}, {"P",{"a","o","i","u","ai","ei","ao","iao","ou","ie","an","ian","en","in","ang","...
#include<iostream>#include<map>#include<unordered_map>#include<chrono>#include<string>#include<vector>#include<random>// 计时辅助函数template<typenameFunc>longlongtimeOperation(Func func){autostart = std::chrono::high_resolution_clock::now();func();autoend = std::chrono::high_resolution_clock::...
unordered_map也是无序的。 1unordered_map是存储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。 2在unordered_map中,键值通常用于惟一地标识元素,而映射值是一个对象,其内容与此键关联。键和映射值的类型可能不同。 3在内部,unordered_map没有对按照任何特定的顺序排序, 为了能在常数范围内找到...
区间构造函数:使用已有容器的一部分元素构造 unordered_map。 代码语言:javascript 代码运行次数:0 运行 AI代码解释 #include <iostream> #include <unordered_map> #include <vector> using namespace std; int main() { vector<pair<string, int>> vec = {{"apple", 1}, {"banana", 2}}; unordered_map...
从最高值的unordered_map中获取密钥的方法是通过遍历unordered_map,找到最高值对应的密钥。以下是具体步骤: 1. 创建一个变量max_value,用于保存当前最高值。 2. 创...
unordered_map class Myclass { public: int index; Myclass() { index = 0; }; Myclass(const Myclass& other) { index = other.index; }; Myclass(Myclass&& other) noexcept : index(other.index) { std::cout << other.index << std::endl; // will be called here if no reserve other....
1.5 unordered_map是关联容器,含有带唯一键的键-值对。搜索、插入和元素移除拥有平均常数时间复杂度。 1、C/C++中常用容器功能汇总 1.1 vector(数组)封装动态数组的顺序容器。 at():所需元素值的引用。 front():访问第一个元素(返回引用)。 back():访问最后一个元素(返回引用)。 beign():返回指向容器第...
class Solution { public: vector<vector<string>> groupAnagrams(vector<string>& strs) { unordered_map<string,vector<string>> map; vector<vector<string>> result; for(auto& str:strs) { string key = str; sort(key.begin(),key.end()); map[key].emplace_back(str); } for(auto m:map) ...