Code shared from the Rust Playground

playground.rs

#![allow(unused)]
use std::collections::HashMap;
fn main() {
    let mut vec = vec![3, 5, 6, 3, 4, 7, 4];
    println!("Averege ={}", averege(&vec));
    assert_eq!(median(&mut vec), 4.0);
    println!("Median ={}", median(&mut vec));
    println!("Mode ={}", mode(&vec));
}
fn averege(v: &[i32]) -> f32 {
    v.iter().sum::<i32>() as f32 / v.len() as f32
}
fn median(v: &mut Vec<i32>) -> f32 {
    v.sort();
    let size = v.len();
    if size % 2 == 0 {
        (v[size / 2] + v[size / 2 - 1]) as f32 / 2.0
    } else {
        v[size / 2] as f32
    }
}
fn mode(v: &[i32]) -> i32 {
    let mut occurrences = HashMap::new();

    for &value in v {
        *occurrences.entry(value).or_insert(0) += 1;
    }
    occurrences
        .into_iter()
        .max_by_key(|&(_, count)| count)
        .map(|(val, _)| val)
        .expect("Can not compute the mode of zero number")
}