learning rust

main.rs

#[derive(Debug)]
struct VecStats {
    mean: f32,
    median: i32,
    mode: i32
}

impl VecStats {
    fn new(numbers: &Vec<i32>) -> VecStats {
        VecStats {
            mean: numbers.iter().sum::<i32>() as f32 / numbers.len() as f32,

            median: {
                let mut vec = numbers.clone();
                vec.sort();
                vec[ vec.len() / 2 ]
            },

            mode: {
                let mut map = HashMap::new();
                let mut current_high_count = i32::MIN;
                let mut current_high_val = 0;
                for n in numbers {
                    let count = map.entry(n).or_insert(0);
                    *count += 1;
                    if count > &mut current_high_count {
                        current_high_count = *count;
                        current_high_val = n.clone();
                    }
                }
                current_high_val
            }
        }
    }
}

fn main() {
    let numbers = vec![5, 6, 7, 3, 4, 9, 6, 7, 7];
    println!("{:?}", VecStats::new(&numbers));  
}