Reverse a String
Level: easy (score: 2)
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Implement the reverse_string function that takes a string slice (&str) as input and returns a new String with the characters in reverse order.
Given the input string "hello", the function should return "olleh":
let reversed = reverse_string("hello"); // "olleh"
fn reverse_string(input: &str) -> String {
// Reverse and return the input string
}
#[cfg(test)]
mod tests {
use super::*;
#[test]
fn test_reverse_string() {
assert_eq!(reverse_string("hello"), "olleh");
assert_eq!(reverse_string("rust"), "tsur");
}
}