Решение на FMI Buzz от Ася Русанова

Обратно към всички решения

Към профила на Ася Русанова

Код

pub fn fizzbuzz(n: usize) -> Vec<String> {

let mut result: Vec<String> = Vec::new();

if n == 0 {

return result;

}

for x in 1..n+1 {

if x % 3 == 0 && x % 5 != 0 {

result.push(String::from("Fizz"));

} else if x % 3 != 0 && x % 5 == 0 {

result.push(String::from("Buzz"));

} else if x % 3 == 0 && x % 5 == 0 {

result.push(String::from("Fizzbuzz"));

} else {

result.push(x.to_string());

}

}

return result;

}

pub fn custom_buzz(n: usize, k1: u8, k2: u8) -> Vec<String> {

let mut result: Vec<String> = Vec::new();

if n == 0 {

return result;

}

if k1 == 0 || k1 == 1 || k2 == 0 || k2 == 1 {

panic!("The divisors should be different than 0 or 1!");

}

for x in 1..n+1 {

if (x as u8) % k1 == 0 && (x as u8) % k2 != 0 {

result.push(String::from("Fizz"));

} else if (x as u8) % k1 != 0 && (x as u8) % k2 == 0 {

result.push(String::from("Buzz"));

} else if (x as u8) % k1 == 0 && (x as u8) % k2 == 0 {

result.push(String::from("Fizzbuzz"));

} else {

result.push(x.to_string());

}

}

return result;

}

pub struct FizzBuzzer {

pub k1: u8,

pub k2: u8,

pub labels: [String; 3],

}

impl FizzBuzzer {

pub fn take(&self, n: usize) -> Vec<String> {

let mut result: Vec<String> = Vec::new();

if n == 0 {

return result;

}

if self.k1 == 0 || self.k1 == 1 || self.k2 == 0 || self.k2 == 1 {

panic!("The divisors should be different than 0 or 1!");

}

for x in 1..n+1 {

if (x as u8) % self.k1 == 0 && (x as u8) % self.k2 != 0 {

result.push(self.labels[0].clone());

} else if (x as u8) % self.k1 != 0 && (x as u8) % self.k2 == 0 {

result.push(self.labels[1].clone());

} else if (x as u8) % self.k1 == 0 && (x as u8) % self.k2 == 0 {

result.push(self.labels[2].clone());

} else {

result.push(x.to_string());

}

}

return result;

}

pub fn change_label(&mut self, index: usize, value: &String) {

if index > 2 {

panic!("Index out of scope.");

}

self.labels[index] = value.to_string();

}

}

#[cfg(test)]

mod tests {

use super::*;

#[test]

fn test_custom_and_take() {

let expected_1 = vec![1.to_string(), String::from("Fizz"), String::from("Buzz"),

String::from("Fizz"), 5.to_string(), String::from("Fizzbuzz")];

let expected_2: Vec<String> = Vec::new();

let mut fb = FizzBuzzer {

k1: 2,

k2: 3,

labels: [String::from("Hello"), String::from("Buzz"), String::from("Fizzbuzz")],

};

fb.change_label(0, &String::from("Fizz"));

assert_eq!(custom_buzz(6,2,3), expected_1);

assert_eq!(fb.take(6), expected_1);

assert_eq!(custom_buzz(0, 1, 4), expected_2);

}

Опитала си се да squeeze-неш няколко теста в един, интересен опит :D.

Не е лошо да извикаш няколко различни функции с един assertion, но expected_1 е default-ната поредица. Реално никъде не тестваш успешна поредица, която да не е Fizz/Buzz/Fizzbuzz. Структурата Fizzbuzzer може спокойно да игнорира label-ите си и да използва винаги стандартните 3 и тестовете ще минат, мисля. Теста по-долу, в който ползваш Avada Kedavra, (нарочно) panic-ва, така че и там нямаш успешно генериране :).

Все е нещо -- все пак, като пишеш тестове, опитай се да правиш проверки за различни комплекти от входове и изходи, за да си сигурна, че кода наистина работи върху тях.

Андрей коментира преди почти 5 години

#[test]

#[should_panic]

fn test_panic_k1_k2() {

custom_buzz(10, 1, 2);

}

#[test]

#[should_panic]

fn test_panic_label_change() {

let mut fb = FizzBuzzer {

k1: 4,

k2: 6,

labels: [String::from("Avada"), String::from("Kedavra"), String::from("Avada Kedavra")],

};

fb.change_label(5, &String::from("Kedabra"));

}

}

Лог от изпълнението

Compiling solution v0.1.0 (/tmp/d20201028-2816268-1pve1kz/solution)
    Finished test [unoptimized + debuginfo] target(s) in 2.68s
     Running target/debug/deps/solution-ebb42508826ef2b4

running 3 tests
test tests::test_custom_and_take ... ok
test tests::test_panic_k1_k2 ... ok
test tests::test_panic_label_change ... ok

test result: ok. 3 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out

     Running target/debug/deps/solution_test-9e954a53ed808c89

running 10 tests
test solution_test::test_change_label_basic ... ok
test solution_test::test_change_label_invalid ... ok
test solution_test::test_classic1 ... ok
test solution_test::test_classic2 ... ok
test solution_test::test_coefficients1 ... ok
test solution_test::test_coefficients2 ... ok
test solution_test::test_coefficients_invalid ... ok
test solution_test::test_struct_basic ... ok
test solution_test::test_struct_invalid ... ok
test solution_test::test_zeroes ... ok

test result: ok. 10 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out

   Doc-tests solution

running 0 tests

test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out

История (1 версия и 1 коментар)