unordered_multimap_name.load_factor()

// C++ program to illustrate the
// unordered_multimap::load_factor() function
#include <iostream>
#include <unordered_map>
using namespace std;
  
int main()
{
    // 声明
    unordered_multimap<int, int> sample;
  
    // 插入元素
    sample.insert({ 1, 2 });
    sample.insert({ 1, 3 });
    sample.insert({ 2, 4 });
    sample.insert({ 5, 8 });
    sample.insert({ 7, 10 });
  
    cout << "大小为: " << sample.size();
    cout << "\n桶计数为: "
         << sample.bucket_count();
  
    cout << "\n负载因子为: "
         << sample.load_factor();
  
    sample.insert({ 1, 1 });
    sample.insert({ 9, 0 });
  
    cout << "\n\n大小为: "
         << sample.size();
  
    cout << "\n桶计数为: "
         << sample.bucket_count();
  
    cout << "\n负载因子为: "
         << sample.load_factor();
  
    sample.insert({ 1, 1 });
  
    cout << "\n\n大小为: "
         << sample.size();
  
    cout << "\n桶计数为: "
         << sample.bucket_count();
  
    cout << "\n负载因子为: "
         << sample.load_factor();
    return 0;
}

大小为: 5
桶计数为: 7
负载因子为: 0.714286

大小为: 7
桶计数为: 17
负载因子为: 0.411765

大小为: 8
桶计数为: 17
负载因子为: 0.470588

// C++程序演示了unordered_multimap::load_factor()
#include <iostream>
#include <unordered_map>
using namespace std;
  
int main()
{
  
    // 声明
    unordered_multimap<char, char> sample;
  
    // 插入元素
    sample.insert({ 'a', 'b' });
    sample.insert({ 'a', 'b' });
    sample.insert({ 'a', 'd' });
    sample.insert({ 'b', 'e' });
    sample.insert({ 'b', 'd' });
  
    cout << "大小为：" << sample.size();
    cout << "\n桶容量为："
         << sample.bucket_count();
  
    cout << "\n负载因子为："
         << sample.load_factor();
  
    sample.insert({ 'b', 'k' });
    sample.insert({ 'b', 'h' });
  
    cout << "\n\n大小为：" << sample.size();
    cout << "\n桶容量为："
         << sample.bucket_count();
  
    cout << "\n负载因子为："
         << sample.load_factor();
  
    sample.insert({ 'z', 'j' });
  
    cout << "\n\n大小为：" << sample.size();
    cout << "\n桶容量为："
         << sample.bucket_count();
    cout << "\n负载因子为："
         << sample.load_factor();
    return 0;
}

大小为：5
桶容量为：7
负载因子为：0.714286

大小为：7
桶容量为：17
负载因子为：0.411765

大小为：8
桶容量为：17
负载因子为：0.470588