public/subjects/searching

searching

Instructions

In this exercise you will have to complete the function search. this function receives an array and a key of i32, then it will return the position of the given key in the array.

Notions

• https://doc.rust-lang.org/book/ch18-00-patterns.html

Expected functions

pub fn search(array: &[i32], key: i32) -> Option<usize> {}

Usage

Here is a program to test your function.

use searching::searching;

fn main() {
    let ar = [1, 3, 4, 6, 8, 9, 11];
    let f = search(&ar, 6);
    println!(
        "the element 6 is in the position {:?} in the array {:?}",
        f, ar
    );
}

And its output

student@ubuntu:~/[[ROOT]]/test$ cargo run
the element 6 is in the position Some(3) in the array [1, 3, 4, 6, 8, 9, 11]
student@ubuntu:~/[[ROOT]]/test$