unordered_set max_load_factor() in C++

max_load_factor(): This function is available in the File: unordered_set.h. This function is a build-in function in STL of C++. This function returns (or set the max load factor value) a value to which the unordered_set load factor is less.

Approach 1: When the function does not take any argument.

Syntax:

float std::unordered_set<int>::max_load_factor() const

This functions returns a positive number that the unordered_set tries to keep the load factor less than or equal to.

File: unordered_set.h

C++

#include <bits/stdc++.h>
using namespace std;

int main()
{
    unordered_set<int> st = {1, 2, 3, 4, 10, 23, 45};

    cout << st.max_load_factor() << "\n";
    return 0;
}

Output:

1

Approach 2: When the function takes one argument.

Syntax:

void std::unordered_set<int>::max_load_factor(float __z)

This function takes one argument of type float as its parameter. This functions change the unordered_set maximum load factor to the new value.

Parameters: One parameter is required for this function.

 __z – The new maximum load factor.

C++

#include <bits/stdc++.h>
using namespace std;

int main()
{
    unordered_set<int> st = {1, 2, 3, 4, 10, 23, 45};
    float z = 0.45;
    st.max_load_factor(z);

    cout << "New load factor: " << st.max_load_factor() << "\n";
    return 0;
}

Output:

New load factor: 0.45