Question

How to calculate the average of an array of double values in Rust

Answer 1

fn sum(arr: &[f64]) -> f64 {
    arr.iter().fold(0.0, |acc, x| acc + x)
}

fn average(arr: &[f64]) -> f64 {
    sum(arr) / arr.len() as f64
}

fn main() {
    let arr = &[3.14, 8.0, 2.87, 5.982, 10.0];
    
    println!("{:?}", average(arr));
}




/*
run:
 
5.9984
 
*/

 

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