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

ogaca42

2 hours ago

2.24ms

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()
    }
}

Maki-SIO

4 hours ago

2.25ms

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()
    }
}

Maxence Potier

Mxn-ptr

5 hours ago

2.18ms

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()
    }
}

ShileiShen

5 hours ago

2.20ms

86.71kb

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

jamtg

6 hours ago

2.30ms

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

Daniel Yan

yansq

8 hours ago

2.11ms

86.71kb

pub fn fizz_buzz(num: u32) -> String {
    // TODO: Implement the FizzBuzz challenge
    let (d3, d5) = (num % 3 == 0, num % 5 == 0);
    match (d3, d5) {
        (true, false) => String::from("Fizz"),
        (false, true) => String::from("Buzz"),
        (true, true) => String::from("FizzBuzz"),
        _ => num.to_string()
    }
}

Daniel Yan

yansq

8 hours ago

2.52ms

86.71kb

pub fn fizz_buzz(num: u32) -> String {
    // TODO: Implement the FizzBuzz challenge
    let (mut d3, mut d5) = (num % 3 == 0, num % 5 == 0);
    match (d3, d5) {
        (true, false) => String::from("Fizz"),
        (false, true) => String::from("Buzz"),
        (true, true) => String::from("FizzBuzz"),
        _ => num.to_string()
    }
}

Gear

macgeargear

11 hours ago

2.13ms

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 {
        "Fizz".to_string()
    }
}

funny_233

funny233-github

11 hours ago

2.17ms

86.71kb

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

zelsazgh

13 hours ago

2.18ms

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()
    }
}

José Bernardo

jose-bernardo

16 hours ago

2.25ms

86.71kb

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

Tiago Silva

tiagombsilva

20 hours ago

2.70ms

86.71kb

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

Delta Regeer

digitalresistor

20 hours ago

2.12ms

86.71kb

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

Delta Regeer

digitalresistor

20 hours ago

2.20ms

86.71kb

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

Carlos Arias

carlos-quantexai

21 hours ago

2.15ms

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 {
        num.to_string()
    }
}

Logan Radloff

radloffl

a day ago

2.17ms

86.71kb

pub fn fizz_buzz(num: u32) -> String {
    // TODO: Implement the FizzBuzz challenge
    let isMultipleOf3 = (num % 3) == 0;
    let isMultipleOf5 = (num % 5) == 0;
    if isMultipleOf3 && isMultipleOf5 {
        return "FizzBuzz".to_string();
    } else if isMultipleOf3 {
        return "Fizz".to_string();
    } else if isMultipleOf5 {
        return "Buzz".to_string();
    } else {
        return num.to_string();
    }
}

retinotopic

a day ago

2.09ms

86.70kb

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

majesticalcreature

2 days ago

2.11ms

86.71kb

pub fn fizz_buzz(num: u32) -> String {
    // TODO: Implement the FizzBuzz challenge
    let assign = [(15, "FizzBuzz"), (5, "Buzz"), (3, "Fizz")];
    for (div, msg) in assign {
        if num % div == 0 {
            return String::from(msg);
        }
    }
    String::from("{num}")
}

今何求

jhq223

2 days ago

2.18ms

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() }
    }
}

Will Barnett

xbarnett

2 days ago

2.22ms

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(),
    }
}

Mikhail

mk-comm

2 days ago

2.27ms

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()
    }
}

Johnchoi913

2 days ago

2.14ms

86.71kb

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

majesticalcreature

2 days ago

2.14ms

86.77kb

pub fn fizz_buzz(num: u32) -> String {
    // TODO: Implement the FizzBuzz challenge
    let div = vec![15, 5, 3];
    let strs = vec!["FizzBuzz", "Buzz", "Fizz"];
    for (i, d) in div.iter().enumerate() {
        if num % d == 0 {
            return String::from(strs[i]);
        }
    }
    String::from("{num}")
}

Matei Stefanescu

matei

2 days ago

2.25ms

86.71kb

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

sander-b-postnl

2 days ago

2.17ms

86.71kb

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

Edoardo A. Morosanu

edoardo-morosanu

2 days ago

2.08ms

86.71kb

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

Edoardo A. Morosanu

edoardo-morosanu

2 days ago

2.25ms

86.71kb

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

i5.650

i5-650

2 days ago

2.29ms

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

amassare

2 days ago

2.27ms

86.70kb

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

Oleksandr Romanov

alexromanov

2 days ago

2.22ms

86.71kb

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

Zava

zavakid

2 days ago

2.16ms

86.71kb

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

Ryumin

RiskyRomero

2 days ago

2.12ms

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()
    }
}

IdoPort

2 days ago

2.22ms

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

Ustin

2 days ago

2.22ms

86.70kb

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

Laurențiu STOLERIU

LaurentiuStoleriu

3 days ago

2.30ms

86.71kb

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

Dylan Park

dylan-park

3 days ago

2.25ms

86.71kb

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

至尊宝

shankun

3 days ago

2.35ms

86.71kb

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

Parallaxes

3 days ago

2.23ms

86.71kb

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

Xinoi

3 days ago

2.17ms

86.71kb

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

Jonathan Lopez

otherJL0

3 days ago

2.12ms

86.71kb

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

Stefano Cianciulli

CianciuStyles

3 days ago

2.20ms

86.71kb

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

Ayush Rawat

ayushrawat10

3 days ago

2.15ms

86.71kb

pub fn fizz_buzz(num: u32) -> String {
    match num {
        fb if (fb%3 == 0 && fb%5 == 0) => {
            return "FizzBuzz".to_owned();
            
        },
        f if (f%3 == 0) => {
            return String::from("Fizz");
        },
        b if (b%5 == 0) => {
            return String::from("Buzz");
        }
        r => r.to_string(),
    }
    
}

Ayush Rawat

ayushrawat10

3 days ago

2.12ms

86.71kb

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

Patrik Bjärterot

pbjarterot

3 days ago

2.20ms

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 %5 == 0 {
        return String::from("Buzz");
    } else if num % 3 == 0 {
        return String::from("Fizz");
    } else {
        return num.to_string();
    }
}

masteryachty

3 days ago

2.38ms

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()
        }
    }
}

damascussteel21

3 days ago

2.30ms

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

Joel Vicente Filho

kyhou

4 days ago

2.34ms

86.71kb

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

Ojash Neopane

oneopane

4 days ago

2.19ms

86.71kb

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

Jiawei Tian

AtJiawei

4 days ago

2.11ms

86.71kb

pub fn fizz_buzz(num: u32) -> String {
    // TODO: Implement the FizzBuzz challenge
    let remainder_3 = num % 3;
    let remainder_5 = num % 5;
    if remainder_3 ==0 && remainder_5== 0 {
        "FizzBuzz".to_string()
    } else if remainder_3 == 0{
        "Fizz".to_string()
    } else if remainder_5 == 0 {
        "Buzz".to_string()
    } else {
        num.to_string()
    }
}

Adi

Aditeya

4 days ago

2.15ms

86.71kb

pub fn fizz_buzz(num: u32) -> String {
    // TODO: Implement the FizzBuzz challenge
    let three = num % 3 == 0;
    let five = num % 5 == 0;
    if !(three || five) {
        return num.to_string();
    }
    let mut s = String::with_capacity(8);
    if three {
        s.push_str("Fizz");
    }
    if five {
        s.push_str("Buzz");
    }
    s
}