Determine Number Characteristics

In this challenge, you will create a function that determines the characteristics of a given number. Specifically, the function will evaluate whether a number is positive negative, or zero and also determine if it is even or odd.

Rust's powerful control flow mechanisms, including if, else if, and else statements, make it easy to handle multiple conditions. By combining these conditions with logical operators, you can create a function that provides comprehensive information about the number.

Your task

You are given a function describe_number(n: i32) -> String that takes an integer as input and returns a string description of the number's characteristics. The description should include whether the number is positive, negative, or zero and whether it is even or odd.

For example:

"Positive even"
"Positive odd"
"Negative even"
"Negative odd"
"Zero"

Complete the function by implementing the necessary conditions and logical checks.

Requirements

If the number is positive and even, return "Positive even".
If the number is positive and odd, return "Positive odd".
If the number is negative and even, return "Negative even".
If the number is negative and odd, return "Negative odd".
If the number is zero, return "Zero".

Example

let result = describe_number(10);
assert_eq!(result, "Positive even");
 
let result = describe_number(-3);
assert_eq!(result, "Negative odd");
 
let result = describe_number(0);
assert_eq!(result, "Zero");

Hints

Remember that the modulus operator % can help determine if a number is even or odd.
Logical operators && and || will be useful for combining conditions.
Consider the order of your conditions to ensure the correct output.

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Solutions

Carlos Arias

carlos-quantexai

2 hours ago

2.50ms

87.35kb

pub fn describe_number(n: i32) -> String {
    // TODO: Implement the function here
    if n == 0 {
        return format!("Zero");
    }
    if n % 2 == 0 {
        if n > 0 {
            return format!("Positive even");
        } else {
            return format!("Negative even");
        }
    } else {
        if n > 0 {
            return format!("Positive odd");
        } else {
            return format!("Negative odd");
        }
    }
}

José Bernardo

jose-bernardo

3 hours ago

2.48ms

87.35kb

pub fn describe_number(n: i32) -> String {
    // TODO: Implement the function here
    if n == 0 { return "Zero".to_string(); }
    match (n > 0, n % 2 == 0)  {
        (true, true) => { return "Positive even".to_string(); },
        (true, false) => { return "Positive odd".to_string(); },
        (false, true) => { return "Negative even".to_string(); },
        (false, false) => { return "Negative odd".to_string(); }
    }
}

Maxence Potier

Mxn-ptr

4 hours ago

2.70ms

87.35kb

pub fn describe_number(n: i32) -> String {
    // TODO: Implement the function here
    let mut description = String::new();
    if n == 0 {
        return "Zero".to_string()
    }
    if n > 0 {
        description.push_str("Positive");
    } else if n < 0 {
        description.push_str("Negative");
    }
    if n % 2 == 0 {
        description.push_str(" even");
    } else {
        description.push_str(" odd");
    }
    description
}

Daniel Yan

yansq

7 hours ago

2.42ms

87.35kb

pub fn describe_number(n: i32) -> String {
    // TODO: Implement the function here
    let mut res = String::new();
    if n > 0 {
        res.push_str("Positive");
    } else if n < 0 {
        res.push_str("Negative");
    } else {
        return String::from("Zero");
    }
    if n % 2 == 0 {
        res.push_str(" even");
    } else {
        res.push_str(" odd");
    }
    res
}

funny_233

funny233-github

11 hours ago

2.40ms

87.35kb

pub fn describe_number(n: i32) -> String {
    // TODO: Implement the function here
    if n == 0 {
        return format!("Zero");
    }
    if n % 2 == 0 {
        if n > 0 {
            return format!("Positive even");
        } else {
            return format!("Negative even");
        }
    } else {
        if n > 0 {
            return format!("Positive odd");
        } else {
            return format!("Negative odd");
        }
    }
}

Delta Regeer

digitalresistor

19 hours ago

2.51ms

87.35kb

pub fn describe_number(n: i32) -> String {
    // TODO: Implement the function here
    match n {
        n if n > 0 && n % 2 == 0 => "Positive even".to_string(),
        n if n < 0 && n % 2 == 0 => "Negative even".to_string(),
        n if n > 0 && n % 2 != 0 => "Positive odd".to_string(),
        n if n < 0 && n % 2 != 0 => "Negative odd".to_string(),
        n if n == 0 => "Zero".to_string(),
        _ => unreachable!()
    }
}

majesticalcreature

a day ago

2.36ms

87.35kb

pub fn describe_number(n: i32) -> String {
    // TODO: Implement the function here
    if n == 0 {
        return String::from("Zero");
    }
    let mut out = String::from(match n {
        n if n > 0 => "Positive ",
        _          => "Negative "
    });
    out.push_str(match n {
        n if n%2 == 0 => "even",
        _             => "odd"
    });
    out
}

今何求

jhq223

2 days ago

2.39ms

87.35kb

pub fn describe_number(n: i32) -> String {
    if n == 0 {
        return "Zero".to_string();
    }
    match (n > 0, n % 2 == 0) {
        (true, true) => "Positive even".to_string(),
        (true, false) => "Positive odd".to_string(),
        (false, true) => "Negative even".to_string(),
        (false, false) => "Negative odd".to_string(),
    }
}

Will Barnett

xbarnett

2 days ago

2.44ms

87.35kb

pub fn describe_number(n: i32) -> String {
    if n == 0 {
        return String::from("Zero");
    }
    String::from(match (n > 0, n % 2 == 0) {
        (true, true) => "Positive even",
        (true, false) => "Positive odd",
        (false, true) => "Negative even",
        (false, false) => "Negative odd",
    })
}

Johnchoi913

2 days ago

2.35ms

87.35kb

pub fn describe_number(n: i32) -> String {
    // TODO: Implement the function here
    if n == 0 {
        return "Zero".to_string();
    }
    let mut ans: String = Default::default();
    match n > 0 {
        true => ans.push_str("Positive "),
        _ => ans.push_str("Negative ")
    }
    match n % 2 == 0 {
        true => ans.push_str("even"),
        _ => ans.push_str("odd")
    }
    ans
}

Gareth Andrew Lloyd

Ignition

2 days ago

2.63ms

87.35kb

pub fn describe_number(n: i32) -> String {
    match n % 2 == 0 {
        true  if n>0 => "Positive even",
        false if n>0 => "Positive odd",
        true  if n<0 => "Negative even",
        false if n<0  => "Negative odd",
        _ => "Zero",
    }.into()
}

Matei Stefanescu

matei

2 days ago

2.41ms

87.35kb

pub fn describe_number(n: i32) -> String {
    if n == 0 {
        return String::from("Zero");
    }
    let mut result = String::from("");
    if n > 0 {
        result.push_str("Positive ");
    } else {
        result.push_str("Negative ");  
    }
    if n % 2 == 0 {
        result.push_str("even");
    } else {
        result.push_str("odd");
    }
    result
}

sander-b-postnl

2 days ago

2.40ms

87.35kb

pub fn describe_number(n: i32) -> String {
        match n {
        0 => "Zero".to_string(),
        _ => {
            let sign = if n > 0 { "Positive" } else { "Negative" };
            let parity = if n % 2 == 0 { "even" } else { "odd" };
            format!("{} {}", sign, parity)
        }
    }
}

Ustin

2 days ago

2.28ms

87.35kb

pub fn describe_number(n: i32) -> String {
   if n == 0 {return "Zero".to_string();}
   return match (n > 0, n%2 == 0) {
        (true, true) => "Positive even".to_string(),
        (true, false) => "Positive odd".to_string(),
        (false, true) => "Negative even".to_string(),
        (false, false) => "Negative odd".to_string(),
   };
}

Ustin

2 days ago

2.27ms

87.35kb

pub fn describe_number(n: i32) -> String {
   if n == 0 {return "Zero".to_string();}
   return match (n > 0, n%2 == 0) {
        (true, true) => "Positive even".to_string(),
        (true, false) => "Positive odd".to_string(),
        (false, true) => "Negative even".to_string(),
        (false, false) => "Negative odd".to_string(),
   };
}

Damian Zaręba

KhazAkar

2 days ago

2.40ms

87.35kb

pub fn describe_number(n: i32) -> String {
    if n == 0 {
        return "Zero".to_string();
    } else if n > 0 {
        if n % 2 == 0 {
            return "Positive even".to_string();
        } else {
            return "Positive odd".to_string();
        }
    } else {
        if n % 2 == 0 {
            return "Negative even".to_string();
        } else {
            return "Negative odd".to_string();
        }
    }
    
}

Ojash Neopane

oneopane

2 days ago

2.33ms

87.35kb

pub fn describe_number(n: i32) -> String {
    let mut result = String::new();
    if n > 0 {
        result.push_str("Positive ");
    } else if n < 0 {
        result.push_str("Negative ");
    } else {
        result.push_str("Zero");
        return result;
    }
    if n % 2 == 0 {
        result.push_str("even");
    } else {
        result.push_str("odd");
    }
    result
}

amassare

2 days ago

2.68ms

87.35kb

pub fn describe_number(n: i32) -> String {
    // TODO: Implement the function here
    if n==0{
        return String::from("Zero");
    }
    let mut res=String::new();
    if n>0{
        res.push_str("Positive ");
    }else if n<0{
        res.push_str("Negative ");
    }
    if n%2==0{
        res.push_str("even");
    }else{
        res.push_str("odd");
    }
    res
}

Oleksandr Romanov

alexromanov

2 days ago

2.36ms

87.35kb

pub fn describe_number(n: i32) -> String {
    // TODO: Implement the function here
    let mut s: String = String::from("");
    if n == 0 {
        s.push_str("Zero");
        return s;
    }
    if n > 0 {
        s.push_str("Positive");
    } else {
        s.push_str("Negative");
    } 
    if n % 2 == 0 {
        s.push_str(" even");
    } else {
        s.push_str(" odd");
    }
    s
}

Stefano Cianciulli

CianciuStyles

2 days ago

2.53ms

87.35kb

pub fn describe_number(n: i32) -> String {
    // TODO: Implement the function here
    if n == 0 { return String::from("Zero") }
    let mut result = String::new();
    result.push_str(if n > 0 { "Positive" } else { "Negative"} );
    result.push_str(" ");
    result.push_str(if n % 2 == 0 { "even" } else { "odd"} );
    result
}

Patrik Bjärterot

pbjarterot

2 days ago

2.53ms

87.35kb

pub fn describe_number(n: i32) -> String {
    // TODO: Implement the function here
   if n == 0 {
    return "Zero".to_string();
   }
   let mut res: String = String::new();
   match n > 0 {
    true => res.push_str("Positive "),
    false => res.push_str("Negative ")
   }
   match n % 2 == 0 {
    true => res.push_str("even"),
    false => res.push_str("odd")
   }
   return res;
}

Joel Vicente Filho

kyhou

3 days ago

2.36ms

87.35kb

pub fn describe_number(n: i32) -> String {
    if n == 0 {
        return "Zero".to_string();
    }
    let mut text = if n > 0 { "Positive ".to_string() } else { "Negative ".to_string() };
    text.push_str(if n % 2 == 0 { "even" } else { "odd" });
    text
}

Ayush Rawat

ayushrawat10

3 days ago

2.43ms

87.35kb

pub fn describe_number(n: i32) -> String {
    match n {
        0 => {
            String::from("Zero")
        },
        i32::MIN..=-1 => {
            if n%2 == 0 {
                return String::from("Negative even");
            } 
            return String::from("Negative odd");
        },
        1..=i32::MAX => {
            if n % 2 == 0 {
                return String::from("Positive even");
            }
            return String::from("Positive odd");
        }
    }
}

Adi

Aditeya

3 days ago

2.46ms

87.35kb

pub fn describe_number(n: i32) -> String {
    // TODO: Implement the function here
    if n == 0 { return "Zero".into(); }
    let mut res = String::with_capacity(13);
    if n < 0 {
        res.push_str("Negative ");
    } else {
        res.push_str("Positive ");
    }
    if n % 2 == 0 {
        res.push_str("even");
    } else {
        res.push_str("odd");
    }
    res
}

masteryachty

3 days ago

2.45ms

87.35kb

pub fn describe_number(n: i32) -> String {
    // TODO: Implement the function here
    String::from(
        if n > 0 {
            if n % 2 == 0 {
                "Positive even"
            }
            else {
                "Positive odd"
            }
        }
        else if n < 0 {
            if n % 2 == 0 {
                "Negative even"
            }
            else {
                "Negative odd"
            }
        }
        else {
            "Zero"
        }
    )
}

damascussteel21

3 days ago

2.46ms

87.35kb

pub fn describe_number(n: i32) -> String {
    // TODO: Implement the function here
    String::from(
        if n > 0 {
            if n % 2 == 0 {
                "Positive even"
            }
            else {
                "Positive odd"
            }
        }
        else if n < 0 {
            if n % 2 == 0 {
                "Negative even"
            }
            else {
                "Negative odd"
            }
        }
        else {
            "Zero"
        }
    )
}

Igor Morozov

morigs

3 days ago

2.31ms

87.35kb

pub fn describe_number(n: i32) -> String {
    if n == 0 {
        return "Zero".to_string();
    }
    let pn = if n > 0 { "Positive" } else { "Negative" };
    let eo = if n % 2 == 0 { "even" } else { "odd" };
    format!("{pn} {eo}")
}

Edgar Christian

edgarcnp

3 days ago

2.50ms

87.35kb

pub fn describe_number(n: i32) -> String {
    if n == 0 { return "Zero".to_string(); }
    
    let sign = if n > 0 { "Positive" } else { "Negative" };
    let parity = if n % 2 == 0 { "even" } else { "odd" };
    format!("{} {}", sign, parity)
}

John Truong

jtruong04

4 days ago

2.59ms

87.35kb

pub fn describe_number(n: i32) -> String {
    // TODO: Implement the function here
    if n == 0 {
        return "Zero".to_string();
    }
    let sign = if n > 0 {"Positive"} else {"Negative"};
    let parity = if n % 2 == 0 {"even"} else {"odd"};
    format!("{} {}", sign, parity)
}

Abhiyan Chhetri

abhiyan-chhetri

4 days ago

2.42ms

87.35kb

pub fn describe_number(n: i32) -> String {
    match (n == 0 , n > 0, n % 2 == 0) {
        (false, true , true ) => "Positive even".into(),
        (false, true, false) => "Positive odd".into(),
        (false, false, true) => "Negative even".into(),
        (false, false, false) => "Negative odd".into(),
        (true, _, _) => "Zero".into()
    }
}

Abhiyan Chhetri

abhiyan-chhetri

4 days ago

2.44ms

87.35kb

pub fn describe_number(n: i32) -> String {
    match (n == 0 , n > 0, n % 2 == 0) {
        (false, true , true ) => "Positive even".into(),
        (false, true, false) => "Positive odd".into(),
        (false, false, true) => "Negative even".into(),
        (false, false, false) => "Negative odd".into(),
        (true, _, _) => "Zero".into()
    }
}

Samuel

Sommos

4 days ago

2.33ms

87.35kb

pub fn describe_number(n: i32) -> String {
    // TODO: Implement the function here
    let mut s = String::new();
    if n == 0 {
        s.push_str("Zero");
        return s
    }
    if n > 0 {
        s.push_str("Positive");
    } else {
        s.push_str("Negative");
    }
    if n % 2 == 0 {
        s.push_str(" even");
    } else {
        s.push_str(" odd");
    }
    s
}

Christian Franzl

wischi-chr

4 days ago

2.43ms

87.35kb

pub fn describe_number(n: i32) -> String {
    let mut s = String::new();
    if n == 0 {
        s.push_str("Zero");
        return s;
    }
    if n > 0 {
        s.push_str("Positive ");
    }
    else {
        s.push_str("Negative ");
    }
    if n % 2 == 0 {
        s.push_str("even");
    }
    else {
        s.push_str("odd");
    }
    s
}

Tukan van der Borgh

tukantje

4 days ago

2.41ms

87.35kb

pub fn describe_number(n: i32) -> String {
    if n == 0 {
        return "Zero".to_string();
    }
    let mut result = if n > 0 { "Positive ".to_string() } else { "Negative ".to_string() };
    if n % 2 == 0 {
        result.push_str("even");
    } else {
        result.push_str("odd");
    }
    result
}

CarrotTarrot

5 days ago

2.49ms

87.35kb

pub fn describe_number(n: i32) -> String {
    match n {
        n if n > 0 && n & 1 == 0 => "Positive even".to_string(),
        n if n > 0 => "Positive odd".to_string(),
        n if n < 0 && n & 1 == 0 => "Negative even".to_string(),
        n if n < 0 => "Negative odd".to_string(),
        _ => "Zero".to_string()
    }
}

CarrotTarrot

5 days ago

2.35ms

87.35kb

pub fn describe_number(n: i32) -> String {
    match n {
        0 => "Zero".to_string(),
        n if n > 0 && n & 1 == 0 => "Positive even".to_string(),
        n if n > 0 => "Positive odd".to_string(),
        n if n < 0 && n & 1 == 0 => "Negative even".to_string(),
        n if n < 0 => "Negative odd".to_string(),
        _ => "NaN".to_string()
    }
}

CarrotTarrot

5 days ago

2.44ms

87.35kb

pub fn describe_number(n: i32) -> String {
    match n {
        0 => "Zero".to_string(),
        n if n > 0 && n & 1 == 0 => "Positive even".to_string(),
        n if n > 0 => "Positive odd".to_string(),
        n if n < 0 && n & 1 == 0 => "Negative even".to_string(),
        n if n < 0 => "Negative odd".to_string(),
        _ => "NaN".to_string()
    }
}

CarrotTarrot

5 days ago

2.38ms

87.35kb

pub fn describe_number(n: i32) -> String {
    match n {
        0 => "Zero".to_string(),
        n if n > 0 && n & 1 == 0 => "Positive even".to_string(),
        n if n > 0 && n & 1 != 0 => "Positive odd".to_string(),
        n if n < 0 && n & 1 == 0 => "Negative even".to_string(),
        n if n < 0 && n & 1 != 0 => "Negative odd".to_string(),
        _ => "NaN".to_string()
    }
}

Danny Yoo

dyoo

5 days ago

2.40ms

87.35kb

pub fn describe_number(n: i32) -> String {
    if n == 0 { return "Zero".to_string(); }
    let pos = n > 0;
    let neg = n < 0;
    let even = n % 2 == 0;
    let sign = if n > 0 { "Positive" } else { "Negative" };
    let suffix = if n % 2 == 0 { "even" } else { "odd"};
    format!("{} {}", sign, suffix)
}

Jason Green

jaswgreen

5 days ago

2.28ms

87.35kb

pub fn describe_number(n: i32) -> String {
    // TODO: Implement the function here
    match n {
        n if n > 0 && n % 2 == 0 => "Positive even".to_string(),
        n if n > 0 && n % 2 != 0 => "Positive odd".to_string(),
        n if n < 0 && n % 2 == 0 => "Negative even".to_string(),
        n if n < 0 && n % 2 != 0 => "Negative odd".to_string(),
        _ => "Zero".to_string(),
    }
}

Nicolás Caracci

hilias

5 days ago

2.35ms

87.35kb

pub fn describe_number(n: i32) -> String {
    // TODO: Implement the function here
    if n == 0 {
        return "Zero".to_string();
    }
    let mut resp = String::new();
    resp.push_str(if n > 0 {
        "Positive "
    } else {
        "Negative "
    });
    resp.push_str(if n % 2 == 0 {
        "even"
    } else {
        "odd"
    });
    resp
}

Hin Phansa

hinphansa

5 days ago

2.39ms

87.35kb

pub fn describe_number(n: i32) -> String {
    if n == 0 {
        return "Zero".to_string();
    }
    match (n > 0, n % 2 == 0) {
        (true, true) => "Positive even".to_string(),
        (true, false) => "Positive odd".to_string(),
        (false, true) => "Negative even".to_string(),
        (false, false) => "Negative odd".to_string(),
    }
}

Hin Phansa

hinphansa

5 days ago

2.41ms

87.35kb

pub fn describe_number(n: i32) -> String {
    // TODO: Implement the function here
    if n == 0 {
        return "Zero".to_string();
    }
    if n > 0 && n % 2 == 0 {
        return "Positive even".to_string();
    } else if n > 0 && n % 2 != 0 {
        return "Positive odd".to_string();
    } else if n < 0 && n % 2 == 0 {
        return "Negative even".to_string();
    } else {
        return "Negative odd".to_string();
    }
}

Quentin Cabanes

qcabanes-hobby

5 days ago

2.46ms

87.35kb

pub fn describe_number(n: i32) -> String {
    match (n, n & 1) {
        (0, 0) => "Zero",
        (1.., 0) => "Positive even",
        (1.., 1) => "Positive odd",
        (_, 0) => "Negative even",
        _ => "Negative odd",
    }.to_string()
}

TaiPoole

5 days ago

2.69ms

87.35kb

pub fn describe_number(n: i32) -> String {
    match (n, n % 2) {
        (0, 0) => "Zero",
        (1.., 0) => "Positive even",
        (1.., 1) => "Positive odd",
        (_, 0) => "Negative even",
        _ =>  "Negative odd"
    }.to_string()
}

TomBaston

5 days ago

2.48ms

87.35kb

pub fn describe_number(n: i32) -> String {
    // TODO: Implement the function here
    match n {
        0 => "Zero".into(),
        _ => format!(
            "{} {}",
            if n > 0 { "Positive" } else { "Negative"},
            if n & 1 == 0 { "even" } else { "odd" }
        )
    }
}

swandyr

5 days ago

2.47ms

87.35kb

pub fn describe_number(n: i32) -> String {
    // TODO: Implement the function here
    if n == 0 {
        String::from("Zero")
    } else {
        format!("{} {}", 
            if n > 0 { "Positive" } else { "Negative" },
            if n % 2 == 0 { "even" } else { "odd" }
        )
    }
}

Nithin S Varrier

0x006E

5 days ago

2.53ms

87.35kb

pub fn describe_number(n: i32) -> String {
    // TODO: Implement the function here
    let mut str = String::new();
    if n == 0 {
        return "Zero".to_string();
    } else if n < 0 {
        str.push_str("Negative");
    } else {
        str.push_str("Positive");
    }
    if n % 2 == 0 {
        str.push_str(" even");
    } else {
        str.push_str(" odd");
    }
    str
}

alspadoni

5 days ago

2.33ms

87.35kb

pub fn describe_number(n: i32) -> String {
    // TODO: Implement the function here
    match (n > 0, n < 0, n % 2) {
        (true, _, 0) => "Positive even",
        (true, _, _) => "Positive odd",
        (_, true, 0) => "Negative even",
        (_, true, _) => "Negative odd",
        (false, false, _) => "Zero",
    }.to_owned()
}

Vineel Kovvuri

vineelkovvuri

6 days ago

2.32ms

87.35kb

pub fn describe_number(n: i32) -> String {
    // TODO: Implement the function here
    let res = if n == 0 {
        "Zero"
    } else if n > 0 {
        if n % 2 == 0 {
            "Positive even"
        } else {
            "Positive odd"
        }
    } else {
        if n % 2 == 0 {
            "Negative even"
        } else {
            "Negative odd"
        }
    };
    res.to_string()
}