public/subjects/get_products

get_products

Instructions

Create a function get_products that takes a vector of integers, and returns a vector of the products of each index. For this exercise to be correct you will have to return the product of every index except the current one.

Examples: [1,2,3,4]

• for the number 1 we get 2*3*4 = 24
• for the number 3 we get 1*2*4 = 8

Notions

• Trait iterator

Expected functions

pub fn get_products(arr: Vec<usize>) -> Vec<usize> {

}

Usage

Here is a program to test your function.

use get_products::get_products;

fn main() {
    let arr: Vec<usize> = vec![1, 7, 3, 4];
    let output = get_products(arr);
    println!("{:?}", output);
}

And its output:

$ cargo run
[84, 12, 28, 21]
$