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

ikatlinsky

2 days ago

3.22ms

86.71kb

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

Aztra Corporation Inc.

AZTRA2022

2 days ago

4.32ms

86.71kb

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

LeonardoPinheiro23

10 days ago

3.46ms

86.71kb

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

LeonardoPinheiro23

10 days ago

3.64ms

86.71kb

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

annececiledunand

13 days ago

2.86ms

86.71kb

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

sjmellor

14 days ago

2.84ms

86.71kb

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

Maicon Crespo

maiconcrespo

16 days ago

3.13ms

86.71kb

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

shibu-t

17 days ago

2.83ms

86.71kb

pub fn fizz_buzz(i: i32) -> String {
    match i {
        i if i % 15 == 0 => "FizzBuzz".to_string(),
        i if i % 3 == 0 => "Fizz".to_string(),
        i if i % 5 == 0 => "Buzz".to_string(),
        _ => i.to_string(),
    }
}

Holger Knauer

hknauer

18 days ago

2.80ms

86.71kb

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

ggnne

19 days ago

3.05ms

86.70kb

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

Tommytto

20 days ago

2.78ms

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)
    }
}

Tommytto

20 days ago

3.49ms

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)
    }
}

Viktor Merkurev

fennr

23 days ago

3.06ms

86.71kb

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

Anatma2

23 days ago

4.86ms

86.71kb

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

Melkii-Mel

a month ago

3.23ms

86.70kb

pub fn fizz_buzz(num: u32) -> String {
    format!("{}{}", ["", "Fizz"][(num % 3 == 0) as usize], ["", "Buzz"][(num % 5 == 0) as usize])
}

Melkii-Mel

a month ago

4.50ms

86.70kb

pub fn fizz_buzz(num: u32) -> String {
    format!("{}{}", ["", "Fizz"][(num % 3 == 0) as usize], ["", "Buzz"][(num % 5 == 0) as usize])
}

0x1057801

0x1057

a month ago

3.14ms

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()
    }
}

Degisew Mengist

degisew

a month ago

5.04ms

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(),
        (false, false) => num.to_string(),
    }
}

Liyqq

a month ago

3.62ms

86.71kb

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

Rajat Sharma

rajatsharma

2 months ago

4.15ms

86.71kb

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

wertion555

2 months ago

3.10ms

86.71kb

pub fn fizz_buzz(num: u32) -> String {
    let s = String::from(if num % 3 == 0 && num % 5 == 0{"FizzBuzz"}else if num % 3 == 0 {"Fizz"}else if num % 5 == 0 {"Buzz"}else {"a"});
    s
}

Hung Dinh

nhdinh

2 months ago

3.53ms

86.72kb

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

MrGru

2 months ago

3.47ms

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();
    }
    if num % 3 == 0 {
        return "Fizz".to_string();
    }
    if num % 5 == 0 {
        return "Buzz".to_string();
    }
    format!("{}", num)
}

MrGru

2 months ago

9.68ms

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();
    }
    if num % 3 == 0 {
        return "Fizz".to_string();
    }
    if num % 5 == 0 {
        return "Buzz".to_string();
    }
    format!("{}", num)
}

Jakub Wiśniewski

wisniewskij

2 months ago

2.95ms

86.70kb

pub fn fizz_buzz(num: u32) -> String {
    let mut out: String = "".to_string();
    if num % 3 == 0 {
        out += "Fizz";
    }
    if num % 5 == 0 {
        out += "Buzz";
    }
    return out;
}

Jason

Jason-fy-wang

2 months ago

3.34ms

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(),
        _ => num.to_string(),
    }
}

1mstupid

2 months ago

3.66ms

86.71kb

pub fn fizz_buzz(num: u32) -> String {
    let k1 = num % 3 == 0;
    let k2 = num % 5 == 0;
    if k1 && k2 {
        return "FizzBuzz".to_string();
    } else if k1  {
        return "Fizz".to_string();
    } else if k2 {
        return "Buzz".to_string();
    } else {
        return num.to_string();
    }
}

1mstupid

2 months ago

3.52ms

86.71kb

pub fn fizz_buzz(num: u32) -> String {
    let k1 = num % 3 == 0;
    let k2 = num % 5 == 0;
    if k1 && k2 {
        return "FizzBuzz".to_string()
    } else if k1  {
        return "Fizz".to_string()
    } else if k2 {
        return "Buzz".to_string()
    } else {
        return num.to_string()
    }
}

mhd242006

2 months ago

3.09ms

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()
    }
}

roboquaternion

2 months ago

2.95ms

86.71kb

pub fn fizz_buzz(num: u32) -> String {
    // TODO: Implement the FizzBuzz challenge
    
    let cond1: bool = num % 3 == 0;
    let cond2: bool = num % 5 == 0;
    if cond1 && cond2 {
        return "FizzBuzz".to_string();
    } else if cond1 {
        return "Fizz".to_string();
    } else if cond2 {
        return "Buzz".to_string();
    } else {
        return num.to_string();
    }
    
    
}

Deaddy3

2 months ago

3.16ms

86.70kb

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

vijayabhaskar badireddi

ptcte

2 months ago

3.65ms

86.71kb

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

Aurimas Kuniutis

auriku

2 months ago

3.20ms

86.71kb

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

Jason

chenjie1219

3 months ago

2.77ms

86.70kb

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

apst

3 months ago

3.13ms

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()
    }
}

Kondorok

3 months ago

2.87ms

86.70kb

pub fn fizz_buzz(num: u32) -> String {
    // TODO: Implement the FizzBuzz challenge
    let mut res = String::new();
    if num % 3 == 0 {
        res += "Fizz";
    }
    if num % 5 == 0 {
        res += "Buzz";
    }
    if res.is_empty() { num.to_string() } else { res }
}
fn main() {
    println!("{}", fizz_buzz(15));
}

Kondorok

3 months ago

3.49ms

86.70kb

pub fn fizz_buzz(num: u32) -> String {
    // TODO: Implement the FizzBuzz challenge
    let mut res = String::new();
    if num % 3 == 0 {
        res += "Fizz";
    }
    if num % 5 == 0 {
        res += "Buzz";
    }
    if res.is_empty() { num.to_string() } else { res }
}
fn main() {
    println!("{}", fizz_buzz(15));
}

javad05

3 months ago

2.84ms

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()
    }
}

Marcel Schiffel

mschiffel

3 months ago

5.02ms

86.71kb

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

Robbie K

va1ha11a

3 months ago

28.73ms

86.71kb

pub fn fizz_buzz(num: u32) -> String {
    let is_3 = num % 3;
    let is_5 = num % 5;
    match (is_3, is_5) {
        (0, 0) => "FizzBuzz".to_string(),
        (0, _) => "Fizz".to_string(),
        (_, 0) => "Buzz".to_string(),
        (_, _) => num.to_string(),
    }
}

syberianbull

3 months ago

3.61ms

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(),
    }
}

VerweyFr

3 months ago

2.88ms

86.71kb

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

Yixian Du

duyixian1234

3 months ago

5.80ms

86.71kb

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

Artem

tich31337

3 months ago

4.48ms

86.71kb

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

endrin

3 months ago

3.04ms

86.71kb

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

Paulo Lins

pblins

3 months ago

2.97ms

86.71kb

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

Ed Longbottom

edlongbottom

3 months ago

3.12ms

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()
    }
}

lugtester

3 months ago

3.84ms

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)
    }
}

Elias Schuler

elE0710

3 months ago

5.29ms

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();
    }
}

Elias Schuler

elE0710

3 months ago

3.90ms

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();
    }
}