Function reverse_string 

pub fn reverse_string(s: &str) -> String

Satrni rekursiv teskari o’girish (o’quv maqsadida).

Amalda: s.chars().rev().collect::<String>().

Misol

use rust_algorithms::other::recursion::reverse_string;

assert_eq!(reverse_string("salom"), "molas");
assert_eq!(reverse_string(""), "");