Rust program to create a simple HashSet

Rust | HashSet Example: Write a program to create a simple HashSet.
Submitted by Nidhi, on October 24, 2021

Problem Solution:

In this program, we will create a simple HashSet to store integer elements, and then we will insert items into created HashSet and print them.

Program/Source Code:

The source code to create a simple HashSet is given below. The given program is compiled and executed successfully.

// Rust program to create a 
// simple HashSet

use std::collections::HashSet;

fn main() {
    let mut set:HashSet<i32> = HashSet::new();
    
    set.insert(10);
    set.insert(20);
    set.insert(30);
    set.insert(40);
    
    println!("HashSet:\n{:?}",set);
}

Output:

HashSet:
{10, 30, 20, 40}

Explanation:

Here, we created a HashSet to store integer items. Then we inserted items into HashSet using the insert() function and printed HashSet.