max.rs

use std::cmp::max;

fn largest2(arr: [i32; 5]) -> i32 {
    arr.iter().fold(0, |num, &x| {
        max(num, x)
    })
}

fn largest3(arr: [i32; 5]) -> i32 {
    arr.iter().fold(0, max) // Do Not compile!
}

fn main() {
    let arr = [5, 6, 2, 9, 3];
    let l2 = largest2(arr);
    let l3 = largest3(arr);
    
    println!("Largest2 : {}", l2);
    println!("Largest3 : {}", l3);
}