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OGordoo b3167f4114 rust exercises for exams 4 years ago
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README.md rust exercises for exams 4 years ago

README.md

order_books

Instructions

Build a module called library with two sub-modules inside it:

  • writers which contains a structure called Writer that has a first_name (String), last_name (String) and a set of books (Vec<Book>).
  • books which contains a structure called Book that has a title (String) and a year of publish (u64).

You will also have to create (outside the previous modules) a function order_books that receives a writer (Writer) and orders the set of books alphabetically.

Expected Functions and Structs

pub fn order_books(writer: &mut Writer) {

}
struct Writer {

}
struct Book {

}

Example

Here is a program to test your function and structs:

fn main() {
    let mut writer_a = Writer {
        first_name: "William".to_string(),
        last_name: "Shakespeare".to_string(),
        books: vec![
            Book {
                title: "Hamlet".to_string(),
                year: 1600,
            },
            Book {
                title: "Othelo".to_string(),
                year: 1603,
            },
            Book {
                title: "Romeo and Juliet".to_string(),
                year: 1593,
            },
            Book {
                title: "MacBeth".to_string(),
                year: 1605,
            },
        ],
    };

    println!("Before ordering");
    for b in &writer_a.books {
        println!("{:?}", b.title);
    }

    order_books(&mut writer_a);

    println!("\nAfter ordering");
    for b in writer_a.books {
        println!("{:?}", b.title);
    }
}

And its output:

$ cargo run
Before ordering
"Hamlet"
"Othelo"
"Romeo and Juliet"
"MacBeth"

After ordering
"Hamlet"
"MacBeth"
"Othelo"
"Romeo and Juliet"
$