unordered_multiset::max_load_factor()是C++ STL中的內置函數，該函數返回unordered_multiset容器的最大加載因子。此函數還提供設置最大負載係數的選項。
用法(返回最大負載係數)：
unordered_multiset_name.max_load_factor()
參數：該函數不接受任何參數。
返回值：它返回一個整數值，該值表示容器的最大負載係數。
以下示例程序旨在說明unordered_multiset::max_load_factor()函數：
程序1：
// C++ program to illustrate
// unordered_multiset::max_load_factor()
#include <iostream>
#include <unordered_set>
using namespace std;
int main()
{
// declaration
unordered_multiset<char> s1;
s1 = { 'a', 'b', 'c', 'd' };
// displaying initial parameters
cout << "Current parameters are :\n";
cout << "max_load_factor= " << s1.max_load_factor() << endl;
cout << "load_factor= " << s1.load_factor() << endl;
cout << "size of s1= " << s1.size() << endl;
cout << "bucket_count= " << s1.bucket_count() << endl;
return 0;
}
輸出：
Current parameters are :
max_load_factor= 1
load_factor= 0.571429
size of s1= 4
bucket_count= 7
程序2：
// c++ program to illustrate
// unordered_multiset::max_load_factor()
#include <iostream>
#include <unordered_set>
using namespace std;
int main()
{
// declaration
unordered_multiset<char> s1;
s1 = { 'a', 'b', 'c', 'd' };
// displaying initial parameters
cout << "Current parameters are :\n";
cout << "max_load_factor= " << s1.max_load_factor() << endl;
cout << "load_factor= " << s1.load_factor() << endl;
cout << "size of s1= " << s1.size() << endl;
cout << "bucket_count= " << s1.bucket_count() << endl;
// changing max_load_factor
s1.max_load_factor(0.5);
cout << endl;
// displaying final parameters
cout << "Final parameters are :\n";
cout << "max_load_factor= " << s1.max_load_factor() << endl;
cout << "load_factor= " << s1.load_factor() << endl;
cout << "size of s1= " << s1.size() << endl;
cout << "bucket_count= " << s1.bucket_count() << endl;
return 0;
}
輸出：
Current parameters are : max_load_factor= 1 load_factor= 0.571429 size of s1= 4 bucket_count= 7 Final parameters are : max_load_factor= 0.5 load_factor= 0.235294 size of s1= 4 bucket_count= 17
注：本文由純淨天空篩選整理自Kushagra7744大神的英文原創作品 unordered_multiset max_load_factor() in C++ STL。非經特殊聲明，原始代碼版權歸原作者所有，本譯文未經允許或授權，請勿轉載或複製。