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

Erick Karanja

Erickkaranja

6 hours ago

6.67ms

87.35kb

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

Shinolr

a day ago

5.69ms

87.35kb

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

DrPing

DocteurPing

a day ago

6.51ms

87.36kb

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

Yuan Xu

yuan1789

3 days ago

5.62ms

87.35kb

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

Zodiacsyndicate

ZodiacSyndicate

4 days ago

5.41ms

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) => "Positive even".to_string(),
        (true, false) => "Positive odd".to_string(),
        (false, true) => "Negative even".to_string(),
        (false, false) => "Negative odd".to_string(),
    }
}

Ricardo Freire

seccone

6 days ago

16.03ms

87.35kb


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

Edwin

ark930

9 days ago

5.81ms

87.42kb

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

Jungseok Lee

jungseoklee

14 days ago

5.77ms

87.35kb

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

Wei Shen

shenwei356

16 days ago

4.96ms

87.35kb

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

Alex

ravsii

19 days ago

4.47ms

87.35kb

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

Mohamed Ahmed Beder

Beder-asu

19 days ago

5.93ms

87.35kb

pub fn describe_number(n: i32) -> String {
    // TODO: Implement the function here
    let result = 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"
    };
    result.to_string()
}

Livin Nector

livinNector

20 days ago

5.12ms

87.35kb

pub fn describe_number(n: i32) -> String {
    // TODO: Implement the function here
    let result = 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"
    };
    result.to_string()
}

Octarudin Mahendra

octarudin

21 days ago

4.42ms

87.35kb

pub fn describe_number(n: i32) -> String {
    let mut result:String = 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
}

Ahmad Ashraf Galal

ahmadashrafgalal

22 days ago

6.25ms

87.35kb

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

Karshik Madavi

c0d3c

22 days ago

6.99ms

87.35kb

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

Karshik Madavi

c0d3c

22 days ago

5.66ms

87.35kb

pub fn describe_number(n: i32) -> String {
    // TODO: Implement the function here
    let mut ans: String = String::new();
    match n {
        n if n < 0 => {
            ans += "Negative ";
            if n % 2 == 0 {
                ans += "even";
            }
            else {
                ans += "odd";
            }
        },
        n if n > 0 => {
            ans += "Positive ";
            if n % 2 == 0 {
                ans += "even";
            }
            else {
                ans += "odd";
            }
        }
        _ => ans += "Zero",
    }
    ans
}

vraneb

25 days ago

3.17ms

87.35kb

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

Corny

CorndogMillionaire

a month ago

3.13ms

87.35kb

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

Slawek J.

slawekpl81

a month ago

2.88ms

87.35kb

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

Atanas Krondev

AtanasKrondev

a month ago

2.99ms

87.35kb

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

zibuyu28

a month ago

3.17ms

87.36kb

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

silaskoemen

a month ago

3.35ms

87.36kb

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

jcarey9149

a month ago

3.49ms

87.35kb

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

Ishaan-2312

a month ago

3.43ms

87.35kb

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

johnson

ssebide

a month ago

3.48ms

87.35kb

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

Omar Saber Talaat Abdelrahman

omar-s-ta

a month ago

3.55ms

87.35kb

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

Vendra000

2 months ago

3.21ms

87.35kb

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

Vendra000

2 months ago

3.21ms

87.35kb

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

vqk-2003

2 months ago

2.90ms

87.35kb

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

vivek

vivek-inavalli

2 months ago

3.00ms

87.35kb

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

Ramon Silva

rsilva1

2 months ago

3.26ms

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)
}

emiludenz

2 months ago

3.82ms

87.35kb

pub fn describe_number(n: i32) -> String {
    if n == 0 {
        return "Zero".to_string();
    }
    let mut s: String = "".to_string();
    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
}

azmahflameheart

2 months ago

3.37ms

87.35kb

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

Marouan Boulahtouf

MBoulahtouf

2 months ago

3.33ms

81.58kb

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

Marouan Boulahtouf

MBoulahtouf

2 months ago

3.51ms

87.35kb

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

Holly Gent

PointlessParrot

2 months ago

3.20ms

87.35kb

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

SpontaneousOverthrow

2 months ago

3.09ms

87.35kb

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

Egu0

egu0

2 months ago

25.16ms

87.35kb

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

makinpaper

2 months ago

4.18ms

87.35kb

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

exeris

2 months ago

3.25ms

87.35kb

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

Asrul Firdaus

AsrulF

2 months ago

3.49ms

87.35kb

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

miel-codeai

2 months ago

3.24ms

87.35kb

pub fn describe_number(n: i32) -> String {
    match n {
        0 => "Zero".to_string(),
        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(),
        _ => unimplemented!(),
    }
}

Anton

majesty-dump

2 months ago

3.00ms

87.35kb

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

Kishan

wdcs-kishansudani

2 months ago

3.41ms

87.35kb

pub fn describe_number(n: i32) -> String {
    match n {
        n if n < 0 && n % 2 == 0 => format!("Negative even"),
        n if n < 0 && n % 2 != 0 => format!("Negative odd"),
        n if n > 0 && n % 2 == 0 => format!("Positive even"),
        n if n > 0 && n % 2 != 0 => format!("Positive odd"),
        n if n == 0 => format!("Zero"),
        _ => unimplemented!(),
    }
}

<YoungAncient/>

youngancient

2 months ago

3.48ms

87.35kb

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

Retroz

Fungichi

2 months ago

3.32ms

87.35kb

pub fn describe_number(n: i32) -> String {
    // TODO: Implement the function here
    match n {
        0 => "Zero".to_string(),
        n if n % 2 == 0 => {
            if n > 0 {
                "Positive even".to_string()
            }else {
                "Negative even".to_string()
            }
        },
        n if n % 2 == 1 || n % 2 == -1=> {
            if n > 0 {
                "Positive odd".to_string()
            } else {
                "Negative odd".to_string()
            }
        },
        _ => "Fault".to_string(),
    }
}

FredoPo

2 months ago

4.15ms

87.36kb

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

shahab-tplus

2 months ago

3.34ms

81.58kb

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

Chawin Chaisongkram

chawinkn

2 months ago

3.08ms

87.35kb

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

Dharm Singh

dharmvr1

2 months ago

4.09ms

87.35kb

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