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Rust program to get the capacity of HashSet

Rust | HashSet Example: Write a program to get the capacity of HashSet.
Last Updated : October 13, 2021

Problem Statement

In this program, we will create a HashSet to store integer items, and then we will get the capacity of HashSet using the capacity() method. The capacity of HashSet is always the multiple of 7. If we initialize elements more than 7 then and less than 14 it becomes 14.

Program/Source Code

The source code to get the capacity of HashSet is given below. The given program is compiled and executed successfully.

// Rust program to get the capacity of HashSet

use std::collections::HashSet;
fn main() {
    let mut set: HashSet<_> = [10, 20, 30,40,50].iter().cloned().collect();
    
    println!("HashSet: {:?}", set);
    println!("Capacity of HashSet: {}",set.capacity());
}

Output

HashSet: {30, 20, 40, 50, 10}
Capacity of HashSet: 7

Explanation

Here we created a HashSet to store integer elements. Then we got the capacity of HashSet using the capacity() function and printed the result.

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