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

Slawek J.

slawekpl81

an hour 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 day 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

5 days 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

12 days 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

13 days 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

15 days 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

15 days 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

17 days 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

17 days 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

21 days 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

22 days 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

23 days 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

23 days 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

23 days 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

25 days 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

a month 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

a month 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

a month 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

a month 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

a month 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

a month 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

a month 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

a month 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

a month 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(),
    }
}

Kishan

wdcs-kishansudani

a month ago

2.81ms

86.71kb

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

Retroz

Fungichi

a month ago

3.07ms

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()}
}

toto

a month ago

3.00ms

86.71kb

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

FredoPo

a month ago

3.45ms

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()
    }
}

Chawin Chaisongkram

chawinkn

a month ago

3.77ms

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()
    }
}

Dharm Singh

dharmvr1

a month ago

3.98ms

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()
    }
}

<YoungAncient/>

youngancient

a month ago

3.16ms

86.71kb

pub fn fizz_buzz(num: u32) -> String {
    // TODO: Implement the FizzBuzz challenge
    if num % 15 == 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 format!("{num}");
    }
}

Pavel Potapkin

potapkin-pavel

a month ago

3.09ms

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()
    }
}

noname

random1106

a month ago

5.05ms

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()
    }
}

mathias dusautoy

pourquoi

a month ago

5.03ms

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()
    }
}

Neelotpal Santra

NSANTRA

a month ago

7.95ms

86.70kb

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

shahab-tplus

2 months ago

3.23ms

86.71kb

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

Vincent SAMY

vsamy

2 months ago

3.74ms

86.71kb

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

Ari Karim

arikarim

2 months ago

14.39ms

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()
    }
}

Tim

timvyy

2 months ago

3.08ms

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()
    }
}

Rubén Moreno aguado

rmaguado

2 months ago

4.92ms

86.71kb

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

jh4vision

2 months ago

4.11ms

86.71kb

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

jh4vision

2 months ago

3.09ms

86.71kb

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

ibrahimomar9316

2 months ago

3.16ms

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

SubZ69

2 months ago

3.17ms

86.71kb

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

Christophe Mohimont

mohic

2 months ago

3.31ms

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(),
        n => format!("{n}"),
    }
}

Dominic Chua

DeusSeos

2 months ago

3.20ms

86.71kb

pub fn fizz_buzz(num: u32) -> String {
    let mult_3 = num % 3;
    let mult_5 = num  % 5;
    
    match (mult_3, mult_5) {
        (0, 0) => {
            "FizzBuzz".to_string()
        },
        (0, _) => {
            "Fizz".to_string()
        },
        (_, 0) => {
            "Buzz".to_string()
        },
        _ => {
            num.to_string()
        }
    }
}
// pub fn fizz_buzz(num: u32) -> String {
//     let mult_3 = num % 3;
//     let mult_5 = num % 5;
//     match (mult_3, mult_5) {
//         (0, 0) => "FizzBuzz".to_string(),
//         (0, _) => "Fizz".to_string(),
//         (_, 0) => "Buzz".to_string(),
//         _ => num.to_string(),   // default case
//     }
// }

Tommy

verse215

2 months ago

3.41ms

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(),
    }
}

msned

2 months ago

3.12ms

86.71kb

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

Prakash Mardi

Mardiprk

2 months ago

3.40ms

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()
    }
}

Splatrac

splatrac

2 months ago

4.28ms

86.71kb

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