Q:

Rust program to print the capacity of HashMap

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YasminRadwan26
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2022-07-18
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In this program, we will create a HashMap and insert some items into it. Then we get the capacity of HashMap using the capacity() method. The capacity of a HashMap will be multiple of 7 by default.

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YasminRadwan26
2022-07-18
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Program/Source Code:

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

// Rust program to print the 
// capacity of HashMap

use std::collections::HashMap;

fn main() 
{
    let mut map = HashMap::new();
    
    map.insert("Key1", 101);
    map.insert("Key2", 102);
    map.insert("Key3", 103);
    map.insert("Key4", 104);

    println!("Capacity of HashMap: {}",map.capacity());
}

Output:

Capacity of HashMap: 7

Explanation:

Here, we created a HashMap. Then we inserted some items into it. After that, we got the capacity of HashMap using the capacity() method and printed the result.

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