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

Taylor Faucett

taylorFaucett

a day ago

7.15ms

86.71kb

pub fn fizz_buzz(num: u32) -> String {
    match (num % 3, num % 5) {
        (0, 0) => "FizzBuzz".to_string(), // Divisible by both 3 and 5
        (0, _) => "Fizz".to_string(),     // Divisible by 3, but not 5
        (_, 0) => "Buzz".to_string(),     // Divisible by 5, but not 3
        (_, _) => format!("{}", num),       // Not divisible by either
    }
}

Shinolr

2 days ago

5.82ms

86.71kb

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

Yuan Xu

yuan1789

3 days ago

6.91ms

86.71kb

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

Erick Karanja

Erickkaranja

4 days ago

5.85ms

86.71kb

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

Zodiacsyndicate

ZodiacSyndicate

4 days ago

5.82ms

86.71kb

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

Ricardo Freire

seccone

6 days ago

10.98ms

86.71kb

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

Edwin

ark930

9 days ago

5.81ms

86.71kb

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

Jungseok Lee

jungseoklee

14 days ago

6.87ms

86.71kb

pub fn fizz_buzz(num: u32) -> String {
    // TODO: Implement the FizzBuzz challenge
    if num % 3 == 0 && num % 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()
    }
}

Wei Shen

shenwei356

16 days ago

5.28ms

86.71kb

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

sstefanov

sstefanov19

18 days ago

5.59ms

86.71kb

pub fn fizz_buzz(num: u32) -> String {
    // TODO: Implement the FizzBuzz challenge
    if num % 5 == 0 && num % 3 == 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();
    }
    
}

Alex

ravsii

19 days ago

4.19ms

86.71kb

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

Mohamed Ahmed Beder

Beder-asu

19 days ago

3.87ms

86.71kb

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

Daniel Schäfer

daniel-neuhaus

20 days ago

4.82ms

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()
    }
}

Livin Nector

livinNector

20 days ago

4.36ms

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()
    }
}

Jérémie Bolduc

jeremiebolduc

21 days ago

4.76ms

86.71kb

pub fn fizz_buzz(num: u32) -> String {
    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()
    }
}

Octarudin Mahendra

octarudin

21 days ago

4.58ms

86.71kb

pub fn fizz_buzz(num: u32) -> String {
    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 {
        num.to_string()
    }
}

Ahmad Ashraf Galal

ahmadashrafgalal

22 days ago

4.05ms

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()
    }
}

Karshik Madavi

c0d3c

22 days ago

4.14ms

86.71kb

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

Karshik Madavi

c0d3c

22 days ago

4.28ms

86.71kb

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

Karshik Madavi

c0d3c

22 days ago

4.07ms

86.71kb

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

vraneb

25 days ago

4.23ms

86.71kb

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

vraneb

25 days ago

3.20ms

86.71kb

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

Corny

CorndogMillionaire

a month ago

2.93ms

86.71kb

pub fn fizz_buzz(num: u32) -> String {
    // TODO: Implement the FizzBuzz challenge
    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();
    }
}

vfractal

a month ago

3.45ms

86.71kb

pub fn fizz_buzz(num: u32) -> String {
    let is_multiple_of_3 = num % 3 == 0;
    let is_multiple_of_5 = num % 5 == 0;
    match (is_multiple_of_3, is_multiple_of_5) {
        (true, true) => "FizzBuzz".to_string(),
        (true, false) => "Fizz".to_string(),
        (false, true) => "Buzz".to_string(),
        (false, false) => num.to_string(),
    
    }
}

Atanas Krondev

AtanasKrondev

a month ago

3.45ms

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()
}

silaskoemen

a month ago

3.01ms

86.71kb

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

Slawek J.

slawekpl81

a month ago

2.92ms

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()
    }
}

zibuyu28

a month ago

2.91ms

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

jcarey9149

a month ago

2.98ms

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()
    }
}

Ishaan-2312

a month ago

3.23ms

86.71kb

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

johnson

ssebide

a month ago

3.24ms

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(),
    }
}

Omar Saber Talaat Abdelrahman

omar-s-ta

2 months ago

2.98ms

86.71kb

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

Vendra000

2 months ago

2.89ms

86.71kb

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

Snoweuph

snoweuph

2 months ago

3.34ms

86.71kb

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

vqk-2003

2 months ago

3.41ms

86.71kb

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

Ramon Silva

rsilva1

2 months ago

2.94ms

86.70kb

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

emiludenz

2 months ago

3.67ms

86.71kb

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

vivek

vivek-inavalli

2 months ago

3.22ms

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()
    }
}

azmahflameheart

2 months ago

3.42ms

86.71kb

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

Marouan Boulahtouf

MBoulahtouf

2 months ago

2.98ms

86.71kb

pub fn fizz_buzz(num: u32) -> String {
    // TODO: Implement the FizzBuzz challenge
    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"),
        _ => num.to_string()
    }
}

Holly Gent

PointlessParrot

2 months ago

3.54ms

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

Egu0

egu0

2 months ago

2.82ms

86.71kb

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

SpontaneousOverthrow

2 months ago

2.94ms

86.72kb

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

makinpaper

2 months ago

3.14ms

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(),
    }
}

Asrul Firdaus

AsrulF

2 months ago

2.88ms

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 {
        format!("{}", num)
    }
}

basiek97

2 months ago

3.21ms

86.71kb

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

exeris

2 months ago

2.87ms

86.71kb

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

miel-codeai

2 months ago

3.04ms

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.to_string(),
    }
}

Anton

majesty-dump

2 months ago

3.36ms

86.71kb

pub fn fizz_buzz(num: u32) -> String {
    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 {
        format!("{}", num)
    }
}

Javier Romario

Javier-Romario

2 months ago

3.32ms

86.71kb

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