Fizz Buzz

Your task is to write a Rust program that implements the classic programming challenge known as FizzBuzz.

You are given a function fizz_buzz(num: u32) -> String that takes a single parameter num of type u32 and returns a String.

Your job is to return a string based on the following rules:

Return "Fizz" for numbers that are multiples of 3.
Return "Buzz" for numbers that are multiples of 5.
Return "FizzBuzz" for numbers that are multiples of both 3 and 5.
Return the number itself for all other numbers.

Example

Here's how the behavior of the function should look like:

assert_eq!(fizz_buzz(1), "1");
assert_eq!(fizz_buzz(2), "2");
assert_eq!(fizz_buzz(3), "Fizz");
assert_eq!(fizz_buzz(4), "4");
assert_eq!(fizz_buzz(5), "Buzz");
assert_eq!(fizz_buzz(6), "Fizz");
assert_eq!(fizz_buzz(7), "7");
assert_eq!(fizz_buzz(8), "8");
assert_eq!(fizz_buzz(9), "Fizz");
assert_eq!(fizz_buzz(10), "Buzz");
assert_eq!(fizz_buzz(11), "11");
assert_eq!(fizz_buzz(12), "Fizz");
assert_eq!(fizz_buzz(13), "13");
assert_eq!(fizz_buzz(14), "14");
assert_eq!(fizz_buzz(15), "FizzBuzz");

Good luck, and happy coding!

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Solutions

Kenneth Love

kennethlove

18 minutes ago

2.86ms

86.71kb

pub fn fizz_buzz(num: u32) -> String {
    // TODO: Implement the FizzBuzz challenge
    if num % 5 == 0 && num % 3 == 0 {
        "FizzBuzz".to_string()
    } else if num % 5 == 0 {
        "Buzz".to_string()
    } else if num % 3 == 0 {
        "Fizz".to_string()
    } else {
        format!("{}", num)
    }
}

Tobiasz

tobiaszfilar

an hour ago

2.74ms

86.71kb

pub fn fizz_buzz(num: u32) -> String {
    // TODO: Implement the FizzBuzz challenge
    if num % 3 == 0 && num % 5 == 0 {
        return "FizzBuzz".to_string();
    } else if num % 3 == 0 { 
        return "Fizz".to_string()
    } else if num % 5 == 0 {
        return "Buzz".to_string()
    }
    num.to_string()
}

kylenoteboom

7 hours ago

2.79ms

86.71kb

pub fn fizz_buzz(num: u32) -> String {
    // TODO: Implement the FizzBuzz challenge
    if num % 3 == 0 && num % 5 == 0 {
        return "FizzBuzz".to_string();
    } else {
        if num % 3 == 0 {
            return "Fizz".to_string();
        } else if num % 5 == 0 {
            return "Buzz".to_string();
        }
    }
    num.to_string()
}

leenalmajz

7 hours ago

2.77ms

86.71kb

pub fn fizz_buzz(num: u32) -> String {
    // TODO: Implement the FizzBuzz challenge
    if num % 3 == 0 && num % 5 == 0 {
        return String::from("FizzBuzz")
    } else if num % 3 == 0 {
        return String::from("Fizz")
    } else if num % 5 == 0 {
       return String::from("Buzz") 
    } else {
        return num.to_string()
    }
}

takes-ki

9 hours ago

3.92ms

86.71kb

pub fn fizz_buzz(num: u32) -> String {
    // TODO: Implement the FizzBuzz challenge
    match (num % 3, num % 5) {
        (0, 0) => "FizzBuzz".to_string(),
        (0, _) => "Fizz".to_string(),
        (_, 0) => "Buzz".to_string(),
        (_, _) => num.to_string()
    }
}

Jaden Wijata

xenonminer

10 hours ago

2.78ms

86.71kb

pub fn fizz_buzz(num: u32) -> String {
    // TODO: Implement the FizzBuzz challenge
    if num % 15 == 0 { "FizzBuzz".to_string() }
    else if num % 5 == 0 { "Buzz".to_string() }
    else if num % 3 == 0 { "Fizz".to_string() }
    else { num.to_string() }
}

Jim Lawton

jimlawton

21 hours ago

2.75ms

86.71kb

pub fn fizz_buzz(num: u32) -> String {
    // TODO: Implement the FizzBuzz challenge
    if num % 5 == 0 && num % 3 == 0 {
        String::from("FizzBuzz")
    } else if num % 5 == 0 {
        String::from("Buzz")
    } else if num % 3 == 0 {
        String::from("Fizz")
    } else {
        num.to_string()
    }
}

5822791760

a day ago

2.64ms

86.70kb

pub fn fizz_buzz(num: u32) -> String {
    // TODO: Implement the FizzBuzz challenge
    let mut result = String::new();
    if num % 3 == 0 {
        result.push_str("Fizz");
    }
    
    if num % 5 == 0 {
        result.push_str("Buzz");
    }
    result
}

Esteban Soba

XtebanUy

a day ago

2.89ms

86.71kb

pub fn fizz_buzz(num: u32) -> String {
    // TODO: Implement the FizzBuzz challenge
    match (num % 3, num % 5) {
        (0, 0) => String::from("FizzBuzz"),
        (0, _) => String::from("Fizz"),
        (_, 0) => String::from("Buzz"),
        _ => format!("{num}")
    }
}

Esteban Soba

XtebanUy

a day ago

3.36ms

86.70kb

pub fn fizz_buzz(num: u32) -> String {
    // TODO: Implement the FizzBuzz challenge
    let mut result = String::new();
    if num % 3 == 0 {
        result.push_str("Fizz");
    }
    
    if num % 5 == 0 {
        result.push_str("Buzz");
    }
    result
}

Markus Bergkvist

mbergkvist

a day ago

2.78ms

86.71kb

pub fn fizz_buzz(num: u32) -> String {
    // TODO: Implement the FizzBuzz challenge
    match (num % 3, num %5) { 
        (0, 0) => String::from("FizzBuzz"),
        (0, _) => String::from("Fizz"),
        (_, 0) => String::from("Buzz"),
        _ => format!("{num}")
    }
}

facat

a day ago

2.79ms

86.71kb

pub fn fizz_buzz(num: u32) -> String {
     // TODO: Implement the FizzBuzz challenge
    match num {
        n if n % 3 == 0 && n % 5 == 0 => "FizzBuzz".to_string(),
        n if n % 3 == 0 => "Fizz".to_string(),
        n if n % 5 == 0 => "Buzz".to_string(),
        n => format!("{n}"),
    }
}

Ando “Thor” Nando

DivineGod

2 days ago

2.89ms

86.71kb

pub fn fizz_buzz(num: u32) -> String {
    // TODO: Implement the FizzBuzz challenge
    match num {
        n if n % 3 == 0 && n % 5 == 0 => "FizzBuzz".to_string(),
        n if n % 3 == 0 => "Fizz".to_string(),
        n if n % 5 == 0 => "Buzz".to_string(),
        n => format!("{n}"),
    }
}

mehdihmr

2 days ago

2.73ms

86.71kb

pub fn fizz_buzz(num: u32) -> String {
    // TODO: Implement the FizzBuzz challenge
    if num % 3 == 0 && num % 5 == 0{
        return "FizzBuzz".to_string();
    } else if num % 5 == 0{
        return "Buzz".to_string();
    } else if num % 3 == 0 {
        return "Fizz".to_string();
    } else {
        return num.to_string();
    }
}

Mister Woody

MisterWoody

2 days ago

2.93ms

86.71kb

pub fn fizz_buzz(num: u32) -> String {
    // TODO: Implement the FizzBuzz challenge
    match num {
        n if n % (5 * 3) == 0 => "FizzBuzz".to_string(),
        n if n % 3 == 0 => "Fizz".to_string(),
        n if n % 5 == 0 => "Buzz".to_string(),
        _ => num.to_string(),
    }
}

Ethel Arterberry

ethel-dev

2 days ago

2.99ms

86.71kb

pub fn fizz_buzz(num: u32) -> String {
    if num % 3 == 0 && num % 5 == 0 {
        return "FizzBuzz".to_string()
    }
    if num % 3 == 0 {
        return "Fizz".to_string()
    }
    if num % 5 == 0 {
        return "Buzz".to_string()
    }
    num.to_string()
}

Algorab

2 days ago

3.46ms

86.70kb

pub fn fizz_buzz(num: u32) -> String {
    let mut fizzbuzz = String::new();
    if num % 3 == 0 {
        fizzbuzz.push_str("Fizz");
    }
    if num % 5 == 0 {
        fizzbuzz.push_str("Buzz");
    }
    if fizzbuzz.is_empty() {
        fizzbuzz.push_str(num.to_string().as_str());
    }
    fizzbuzz
}

Stefan Roas

sroas

2 days ago

3.02ms

86.71kb

pub fn fizz_buzz(num: u32) -> String {
    // TODO: Implement the FizzBuzz challenge
    let multiple_of_three = num % 3 == 0;
    let multiple_of_five = num % 5 == 0;
    if multiple_of_three && multiple_of_five {
        "FizzBuzz".to_string()
    } else if multiple_of_three {
        "Fizz".to_string()
    } else if multiple_of_five {
        "Buzz".to_string()
    } else {
        num.to_string()
    }
}

Felipe Balbi

felipebalbi

3 days ago

3.09ms

86.70kb

pub fn fizz_buzz(num: u32) -> String {
    // TODO: Implement the FizzBuzz challenge
    let mut output = String::new();
    if num % 5 == 0 || num % 3 == 0 {
        if num % 3 == 0 {
            output.push_str("Fizz");
        }
        if num % 5 == 0 {
            output.push_str("Buzz");
        }
    } else {
        output.push_str(&num.to_string());
    }
    output
}

xiuchiliudu

3 days ago

3.31ms

86.71kb

pub fn fizz_buzz(num: u32) -> String {
    // TODO: Implement the FizzBuzz challenge
     if num % 15 == 0 {
        "FizzBuzz".to_string()
    } else if num % 3 == 0 {
        "Fizz".to_string()
    } else if num % 5 == 0 {
        "Buzz".to_string()
    } else {
        format!("{}", num)
    }
}

Daniel Petrov

danielmpetrov

3 days ago

2.86ms

86.71kb

pub fn fizz_buzz(num: u32) -> String {
    match num {
        x if x % 15 == 0 => "FizzBuzz".to_string(),
        x if x % 3 == 0 => "Fizz".to_string(),
        x if x % 5 == 0 => "Buzz".to_string(),
        x => x.to_string(),
    }
}

yoakemae

4 days ago

2.71ms

86.71kb

pub fn fizz_buzz(num: u32) -> String {
    // TODO: Implement the FizzBuzz challenge
          if num % 3 == 0 && num % 5 == 0 {
            return "FizzBuzz".to_string();
        } else if num % 3 == 0 {
            return "Fizz".to_string();
        } else if num % 5 == 0 {
            return "Buzz".to_string();
        } else {
            return num.to_string();
        }
}

tinthid

4 days ago

2.86ms

86.71kb

pub fn fizz_buzz(num: u32) -> String {
    // TODO: Implement the FizzBuzz challenge
    if num % 15 == 0 {
        return String::from("FizzBuzz");
    }
    if num % 5 == 0 {
        return String::from("Buzz");
    }
    if num % 3 == 0 {
        return String::from("Fizz");
    }
    num.to_string()
}

qiyuan711

4 days ago

3.22ms

86.71kb

pub fn fizz_buzz(num: u32) -> String {
    match (num % 3 == 0, num % 5 == 0) {
        (true, true) => "FizzBuzz".to_string(),
        (true, false) => "Fizz".to_string(),
        (false, true) => "Buzz".to_string(),
        _ => num.to_string(),
    }
}

Jan Willems

4 days ago

2.92ms

86.71kb

pub fn fizz_buzz(num: u32) -> String {
    match num {
        n if n % 3 == 0 && n % 5 == 0 => "FizzBuzz".to_string(),
        n if n % 3 == 0 => "Fizz".to_string(),
        n if n % 5 == 0 => "Buzz".to_string(),
        _ => num.to_string(),
    }
}

Nicky Thorne

nickythorne

4 days ago

2.71ms

86.71kb

pub fn fizz_buzz(num: u32) -> String {
    // TODO: Implement the FizzBuzz challenge
    match num {
        n if n % 3 == 0 && n % 5 == 0 => return "FizzBuzz".to_string(),
        n if n % 3 == 0 => return "Fizz".to_string(),
        n if n % 5 == 0 => return "Buzz".to_string(),
        _ => return num.to_string()
    };
}

Philip Mercer

DV-13

4 days ago

3.75ms

86.71kb

pub fn fizz_buzz(num: u32) -> String {
    match (num % 3 == 0, num % 5 == 0) {
        (true, true) => "FizzBuzz".to_string(),
        (true, false) => "Fizz".to_string(),
        (false, true) => "Buzz".to_string(),
        _ => num.to_string(),
    }
}

RonaldoArayadev

4 days ago

2.86ms

86.70kb

pub fn fizz_buzz(num: u32) -> String {
    // TODO: Implement the FizzBuzz challenge
    let mut b:bool = false;
    let mut ret:String = String::from("");
    if num % 3 == 0 {
        ret.push_str("Fizz");
        b = true;
    }
    if num % 5 == 0 {
        ret.push_str("Buzz");
        b = true;
    }
    if b == false {
        ret.push_str(&num.to_string());
    }
    ret    
}

martin-unit

4 days ago

3.57ms

86.71kb

pub fn fizz_buzz(num: u32) -> String {
    // TODO: Implement the FizzBuzz challenge
    if num % 15 == 0 {
        "FizzBuzz".to_string()
    }
    else if num % 5 == 0 {
        "Buzz".to_string()
    }
    else if num % 3 == 0 {
        "Fizz".to_string()
    }
    else {
        num.to_string()
    }
}

martin-unit

4 days ago

2.66ms

86.71kb

pub fn fizz_buzz(num: u32) -> String {
    // TODO: Implement the FizzBuzz challenge
    if num % 15 == 0 {
        "FizzBuzz".to_string()
    }
    else if num % 5 == 0 {
        "Buzz".to_string()
    }
    else if num % 3 == 0 {
        "Fizz".to_string()
    }
    else {
        num.to_string()
    }
}

vrzwflng

5 days ago

3.37ms

86.71kb

pub fn fizz_buzz(num: u32) -> String {
    if num % (3 * 5) == 0 {
        String::from("FizzBuzz")
    } else if num % 3 == 0 {
        String::from("Fizz")
    } else if num % 5 == 0 {
        String::from("Buzz")
    } else {
        num.to_string()
    }
}

Jörg Erdmenger

joeslow

5 days ago

4.00ms

86.71kb

pub fn fizz_buzz(num: u32) -> String {
    // TODO: Implement the FizzBuzz challenge
    if num % 3 == 0 && num % 5 == 0 {
        "FizzBuzz".to_string()
    } else if num % 3 == 0 {
        "Fizz".to_string()
    } else if num % 5 == 0 {
        "Buzz".to_string()
    } else {
        num.to_string()
    }
}

Elizabeth Doughty

Thymelizabeth

5 days ago

3.30ms

86.70kb

pub fn fizz_buzz(num: u32) -> String {
    let mut result = String::new();
    if num % 3 == 0 {
        result += "Fizz";
    }
    if num % 5 == 0 {
        result += "Buzz";
    }
    if result.is_empty() {
        format!("{}", num)
    } else {
        result
    }
}

s.konishi

konishu

6 days ago

3.91ms

86.71kb

pub fn fizz_buzz(num: u32) -> String {
    // TODO: Implement the FizzBuzz challenge
    if num % 3 == 0 && num % 5 == 0 {
        "FizzBuzz".to_string()
    } 
    else if num % 5 == 0 {
        "Buzz".to_string()
    }
    else if num % 3 == 0 {
        "Fizz".to_string()
    } 
    else {
        num.to_string()
    }
}

Masayuki Sunahara

tamanishi

6 days ago

2.82ms

86.71kb

pub fn fizz_buzz(num: u32) -> String {
    // TODO: Implement the FizzBuzz challenge
    if num % 15 == 0 {
        "FizzBuzz".to_string()
    } else if num % 3 == 0 {
        "Fizz".to_string()
    } else if num % 5 == 0 {
        "Buzz".to_string()
    } else {
        num.to_string()
    }
}

devarajang

6 days ago

3.52ms

86.71kb

pub fn fizz_buzz(num: u32) -> String {
    // TODO: Implement the FizzBuzz challenge
    let output:String;
    if num % 15 == 0 {
        output = String::from("FizzBuzz");
    }
    else if num % 5 == 0 {
        output = String::from("Buzz");
    }
    else if num % 3 == 0{
        output = String::from("Fizz");
    }
    else {
        output = String::from(format!("{}", num));
    }
        
    return output;
}

nichideropa

6 days ago

3.54ms

86.71kb


pub fn fizz_buzz(num: u32) -> String {
    // TODO: Implement the FizzBuzz challenge
    if num % (3 * 5) as u32 == 0 {
        String::from("FizzBuzz")
    } else if num % 3 == 0 {
        String::from("Fizz")
    } else if num % 5 == 0 {
        String::from("Buzz")
    } else {
        num.to_string()
    }
}

nichideropa

6 days ago

2.81ms

86.71kb


pub fn fizz_buzz(num: u32) -> String {
    // TODO: Implement the FizzBuzz challenge
    if num % (3 * 5) as u32 == 0 {
        String::from("FizzBuzz")
    } else if num % 3 == 0 {
        String::from("Fizz")
    } else if num % 5 == 0 {
        String::from("Buzz")
    } else {
        num.to_string()
    }
}

Jan

jeypiti

6 days ago

2.83ms

86.71kb

pub fn fizz_buzz(num: u32) -> String {
    // TODO: Implement the FizzBuzz challenge
    if num % 15 == 0 {
        String::from("FizzBuzz")
    } else if num % 3 == 0 {
        String::from("Fizz")
    } else if num % 5 == 0 {
        String::from("Buzz")
    } else {
        num.to_string()
    }
}

stefafafan

6 days ago

2.69ms

86.71kb

pub fn fizz_buzz(num: u32) -> String {
    // TODO: Implement the FizzBuzz challenge
    if num % 3 == 0 && num % 5 == 0 {
        "FizzBuzz".to_string()
    } else if num % 3 == 0 {
        "Fizz".to_string()
    } else if num % 5 == 0 {
        "Buzz".to_string()
    } else {
        num.to_string()
    }
}

0xsmarter

7 days ago

4.04ms

86.71kb

pub fn fizz_buzz(num: u32) -> String {
    // TODO: Implement the FizzBuzz challenge
    match num {
        x if x % 3 == 0 && x % 5 == 0 => "FizzBuzz".to_string(),
        x if x % 3 == 0 => "Fizz".to_string(),
        x if x % 5 == 0 => "Buzz".to_string(),
        _ => num.to_string()
    }
}

t3stlab

7 days ago

3.19ms

86.71kb

pub fn fizz_buzz(num: u32) -> String {
    match num {
        x if x % 3 == 0 && x % 5 == 0 => "FizzBuzz".to_string(),
        x if x % 3 == 0 => "Fizz".to_string(),
        x if x % 5 == 0 => "Buzz".to_string(),
        _ => num.to_string()
    }
}

aidan1magee

7 days ago

3.18ms

86.71kb

pub fn fizz_buzz(num: u32) -> String {
    // TODO: Implement the FizzBuzz challenge
    if num % 3 == 0 && num % 5 == 0{
        "FizzBuzz".to_string()
    } else if num % 3 == 0 {
        "Fizz".to_string()
    } else if num % 5 == 0{
        "Buzz".to_string()
    } else {
        num.to_string()
    }
}

tsuchiya-d

tsucchinoko

7 days ago

3.27ms

86.71kb

pub fn fizz_buzz(num: u32) -> String {
    // TODO: Implement the FizzBuzz challenge
    match num {
        x if x % 3 == 0 && x % 5 == 0 => "FizzBuzz".to_string(),
        x if x % 3 == 0 => "Fizz".to_string(),
        x if x % 5 == 0 => "Buzz".to_string(),
        _ => num.to_string()
    }
}

Ankeet Parikh

ankeetparikh

8 days ago

3.27ms

86.71kb

pub fn fizz_buzz(num: u32) -> String {
    if num % 15 == 0 {
        "FizzBuzz".to_string()
    } else if num % 3 == 0 {
        "Fizz".to_string()
    } else if num % 5 == 0 {
        "Buzz".to_string()
    } else {
        num.to_string()
    }
}

maxvi

8 days ago

3.20ms

86.71kb

pub fn fizz_buzz(num: u32) -> String {
    match num {
        x if x % 3 == 0 && x % 5 == 0 => "FizzBuzz".to_string(),
        x if x % 3 == 0 => "Fizz".to_string(),
        x if x % 5 == 0 => "Buzz".to_string(),
        _ => num.to_string(),
    }
}

Gert Vervoort

gjmvervoort

8 days ago

3.06ms

86.71kb

pub fn fizz_buzz(num: u32) -> String {
    if num % 3 == 0 && num % 5 == 0 {
        "FizzBuzz".to_string()
    } else if num % 3 == 0 {
        "Fizz".to_string()
    } else  if num % 5 == 0 {
        "Buzz".to_string()
    } else {
        num.to_string()
    }
}

Lauri Sarap

LauriSarap

8 days ago

3.14ms

86.71kb

pub fn fizz_buzz(num: u32) -> String {
    match num {
        _ if num % 3 == 0 && num % 5 == 0 => return "FizzBuzz".to_string(),
        _ if num % 3 == 0 => return "Fizz".to_string(),
        _ if num % 5 == 0 => return "Buzz".to_string(),
        _ => return num.to_string(),
    }
}

Thitiworada

Kobeieii

9 days ago

3.22ms

86.71kb

pub fn fizz_buzz(num: u32) -> String {
    // TODO: Implement the FizzBuzz challenge
    let mod_3 = num % 3;
    let mod_5 = num % 5;
    if mod_3 == 0 && mod_5 == 0 {
        "FizzBuzz".to_string()
    }
    else if mod_3 == 0 {
        "Fizz".to_string()
    }
    else if mod_5 == 0 {
        "Buzz".to_string()
    }
    else {
        num.to_string()
    }
}

Andreas

StimhackSoftware

9 days ago

3.26ms

86.71kb

use std::ops::Rem;
pub fn fizz_buzz(num: u32) -> String {
    if num.rem(15) == 0 {
        "FizzBuzz".to_string()
    } else if num.rem(5) == 0 {
        "Buzz".to_string()
    } else if num.rem(3) == 0 {
        "Fizz".to_string()
    } else {
        num.to_string()
    }
}