Answers for "maximum difference in list of numbers"

maximum difference in list of numbers

// As old-style iterative
fn max_diff2(numbers: &[i32]) -> i32 {
    if numbers.len() < 2 { return 0 }
    let mut min = numbers[0];
    let mut max = numbers[0];
    for n in numbers {
        if n > &max {
            max = *n;
        }
        if n < &min {
            min = *n;
        }
    }
    max - min
}

// As one-liner
fn max_diff(numbers: &[i32]) -> i32 {
    *numbers.iter().max().unwrap_or(&0) - *numbers.iter().min().unwrap_or(&0)
}

fn main() {
    println!("Max diff = {} ",max_diff(&[0, 1, 2, 3, 4, 5, 6]) );  //, 6););
    println!("Max diff = {} ",max_diff(&[7,7,-7,7,7,7,7,7,7,7,7]) );    
}