remove an element from the end of an array in rust

To remove an element from the end of an array in Rust, you can use the pop method on a mutable Vec. A Vec is similar to an array in that it holds a collection of elements, but unlike an array, the size of a Vec can change dynamically.

Here's an example:

main.rs
let mut my_vec = vec![1, 2, 3, 4, 5];
let popped_element = my_vec.pop();
println!("{:?}", my_vec); // prints [1, 2, 3, 4]
println!("{:?}", popped_element); // prints Some(5)
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In this example, we first create a Vec with some values. We then use the pop method to remove the last element from the Vec. The pop method returns an Option type containing the value of the removed element, or None if the Vec was empty. Finally, we print out the Vec and the popped element to verify that the operation worked as expected.

Note that we need to declare my_vec as mutable (mut) in order to be able to modify it with the pop method.