Rot13 in Rust

Welcome to the Rot13 in Rust page! Here, you'll find the source code for this program as well as a description of how the program works.

Current Solution

use std::env;

fn rot13(input: String) -> String {
    let mut output = String::new();
    
    for character in input.chars() {
        let offset;

        if character.is_ascii_lowercase() {
            offset = 'a' as u8;
        }
        else if character.is_ascii_uppercase() {
            offset = 'A' as u8;
        }
        else {
            output.push(character);
            continue;
        }
    
        let mut rotated = character as u8;
        rotated -= offset;
        rotated += 13;
        rotated %= 26;
        rotated += offset;
        
        output.push(rotated as char);
    }
    
    return output;
}

fn main() {
    let args: Vec<String> = env::args().collect();
    if (args.len() == 1) {
        println!("Usage: please provide a string to encrypt");
        return;
    }
    
    let input = args[1].to_string();
    if (input.is_empty()) {
        println!("Usage: please provide a string to encrypt");
        return;
    }
    
    let output = rot13(input);
    println!("{}", output);
}

Rot13 in Rust was written by:

• Jeremy Grifski
• Vincent Caron

If you see anything you'd like to change or update, please consider contributing.

Note: The solution shown above is the current solution in the Sample Programs repository as of May 16 2022 11:56:20. The solution was first committed on Jul 15 2019 10:49:39. As a result, documentation below may be outdated.

How to Implement the Solution

No 'How to Implement the Solution' section available. Please consider contributing.

How to Run the Solution

No 'How to Run the Solution' section available. Please consider contributing.