mirror of https://github.com/01-edu/public.git
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
xpetit
46f4ddc49e
|
4 years ago | |
---|---|---|
.. | ||
README.md | 4 years ago |
README.md
rotate
Instructions
In this exercise, if you do not know about it already, you will learn about the rotational cipher "ROT13".
A ROT13 on the Latin alphabet would be as follows:
-
Plain: abcdefghijklmnopqrstuvwxyz
-
Cipher: nopqrstuvwxyzabcdefghijklm
Your purpose in this exercise is to create a similar rotate
function that is a better version of the ROT13 cipher.
Your function will receive a string
and a number
and it will rotate each letter of that string
by the number
of times settled by the second argument towards the right, or towards the left if the number is negative.
Your function
should only rotate letters. If the string includes punctuation and numbers
they will remain the same.
Notions
Expected functions
pub fn rotate(input: &str, key: i8) -> String {
}
Usage
Here is a program to test your function.
use rot::*;
fn main() {
println!("The letter \"a\" becomes: {}", rotate("a", 26));
println!("The letter \"m\" becomes: {}", rotate("m", 0));
println!("The letter \"m\" becomes: {}", rotate("m", 13));
println!("The letter \"a\" becomes: {}", rotate("a", 15));
println!("The word \"MISS\" becomes: {}", rotate("MISS", 5));
println!(
"The decoded message is: {}",
rotate("Gur svir obkvat jvmneqf whzc dhvpxyl.", 13)
);
println!(
"The decoded message is: {}",
rotate("Mtb vznhpqd ifky ozrunsl ejgwfx ajc", 5)
);
println!(
"Your cypher wil be: {}",
rotate("Testing with numbers 1 2 3", 4)
);
println!("Your cypher wil be: {}", rotate("Testing", -14));
println!("The letter \"a\" becomes: {}", rotate("a", -1));
}
And its output:
$ cargo run
The letter "a" becomes: a
The letter "m" becomes: m
The letter "m" becomes: z
The letter "a" becomes: p
The word "MISS" becomes: RNXX
The decoded message is: The five boxing wizards jump quickly.
The decoded message is: Ryg aesmuvi nkpd tewzsxq jolbkc foh
Your cypher wil be: Xiwxmrk amxl ryqfivw 1 2 3
Your cypher wil be: Fqefuzs
The letter "a" becomes: z
$