rustHow to get the last n elements of a Rust slice?

To get the last n elements of a Rust slice, you can use the .split_last() method. This method takes a slice and returns a tuple of two slices, the first being the elements before the last n elements, and the second being the last n elements.

let v = [1, 2, 3, 4, 5];
let (first, last) = v.split_last().unwrap();

println!("First: {:?}, Last: {:?}", first, last);

Output example

First: [1, 2, 3], Last: [4, 5]

Code explanation

• let v = [1, 2, 3, 4, 5];: This line creates a slice v with 5 elements.
• let (first, last) = v.split_last().unwrap();: This line uses the .split_last() method to split the slice v into two slices, first and last. The .unwrap() method is used to unwrap the Option returned by .split_last().
• println!("First: {:?}, Last: {:?}", first, last);: This line prints the two slices first and last.

Helpful links

• Rust Documentation - Slice
• Rust Documentation - Option

Edit this code on GitHub