The unordered_multimap::max_load_factor() is a built-in function in C++ STL which returns the maximum load factor of the unordered_multimap container. This function also provides with an option of setting the maximum load factor.
- Syntax (To return the maximum load factor) :
unordered_multimap_name.max_load_factor()
Parameters: The function does not accept any parameters.
Return Value: It returns an integral values which denote the maximum load factor of the container.
Below programs illustrates the above function:
Program 1:
// C++ program to illustrate the // unordered_multimap::max_load_factor() #include <bits/stdc++.h> using namespace std;
int main()
{ // declaration
unordered_multimap< int , int > sample1;
// inserts key and element
// in sample1
sample1.insert({ 10, 100 });
sample1.insert({ 50, 500 });
// prints the max load factor
cout << "The max load factor of sample1: "
<< sample1.max_load_factor();
cout << "\nKey and Elements of Sample1 are:" ;
for ( auto it = sample1.begin(); it != sample1.end(); it++) {
cout << "{" << it->first << ", " << it->second << "} " ;
}
return 0;
} |
The max load factor of sample1: 1 Key and Elements of Sample1 are:{50, 500} {10, 100}
- Syntax (To set the maximum load factor):
unordered_multimap_name.max_load_factor(N)
Parameters: The function accepts a single mandatory parameter N which specifies the load factor to be set. This N will be the maximum load factor of the container.
Return Value: The function does not returns anything.
Below program illustrates the above function:
// C++ program to illustrate the // unordered_multimap::max_load_factor(N) #include <bits/stdc++.h> using namespace std;
int main()
{ // declaration
unordered_multimap< int , int > sample1;
// inserts key and element
// in sample1
sample1.insert({ 10, 100 });
sample1.insert({ 50, 500 });
cout << "The max load factor of elements of sample1: "
<< sample1.max_load_factor();
// sets the load factor
sample1.max_load_factor(100);
cout << "\nThe max load factor of sample1 after setting it: "
<< sample1.max_load_factor();
cout << "\nKey and Elements of Sample1 are:" ;
for ( auto it = sample1.begin(); it != sample1.end(); it++) {
cout << "{" << it->first << ", " << it->second << "} " ;
}
return 0;
} |
The max load factor of elements of sample1: 1 The max load factor of sample1 after setting it: 100 Key and Elements of Sample1 are:{50, 500} {10, 100}