Weekday from Number

In this challenge, you will use Rust's pattern matching capabilities to determine the name of a weekday given its corresponding number. Each day of the week will be represented by a number from 1 to 7, where 1 corresponds to Monday and 7 corresponds to Sunday.

This is a common task that can be very useful in various applications, such as scheduling systems or calendar utilities. You will practice working with Rust's match statement to map numbers to their respective weekdays.

Your task

Your task is to implement a function, weekday_from_number(day: u8) -> &'static str, that takes a number as input and returns the corresponding weekday as a string. If the input number is not within the range of 1 to 7, the function should return "Invalid day number".

Requirements

If the input number is 1, the function should return "Monday".
If the input number is 2, the function should return "Tuesday".
If the input number is 3, the function should return "Wednesday".
If the input number is 4, the function should return "Thursday".
If the input number is 5, the function should return "Friday".
If the input number is 6, the function should return "Saturday".
If the input number is 7, the function should return "Sunday".
If the input number is not between 1 and 7, the function should return "Invalid day number".

Example

let result = weekday_from_number(1);
assert_eq!(result, "Monday");
 
let result = weekday_from_number(5);
assert_eq!(result, "Friday");
 
let result = weekday_from_number(8);
assert_eq!(result, "Invalid day number");

Hints

Use the match statement to map each number to its corresponding weekday.
Remember that Rust strings are UTF-8 encoded and &'static str denotes a string slice that lives for the entire duration of the program

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Solutions

woke-developer

2 hours ago

2.58ms

81.13kb

pub fn weekday_from_number(day: u8) -> &'static str {
    // TODO: Implement the function here
    match day {
        1 => "Monday",
        2 => "Tuesday",
        3 => "Wednesday",
        4 => "Thursday",
        5 => "Friday",
        6 => "Saturday",
        7 => "Sunday",
        _ => "Invalid day number",
    }
}

Markus Bergkvist

mbergkvist

2 hours ago

2.61ms

81.13kb

pub fn weekday_from_number(day: u8) -> &'static str {
    // TODO: Implement the function here
    match day {
        1 => "Monday",
        2 => "Tuesday",
        3 => "Wednesday",
        4 => "Thursday",
        5 => "Friday",
        6 => "Saturday",
        7 => "Sunday",
        _ => "Invalid day number"
    }
}

5822791760

2 hours ago

2.57ms

81.13kb

pub fn weekday_from_number(day: u8) -> &'static str {
    // TODO: Implement the function here
    match day {
        1 => "Monday",
        2 => "Tuesday",
        3 => "Wednesday",
        4 => "Thursday",
        5 => "Friday",
        6 => "Saturday",
        7 => "Sunday",
        _ => "Invalid day number",
    }
}

leenalmajz

3 hours ago

2.98ms

81.13kb

pub fn weekday_from_number(day: u8) -> &'static str {
    // TODO: Implement the function here
    if day == 1 {
        return "Monday"
    } else if day == 2 {
        return "Tuesday"
    } else if day == 3 {
        return "Wednesday"
    } else if day == 4 {
        return "Thursday"
    } else if day == 5 {
        return "Friday"
    } else if day == 6 {
        return "Saturday"
    } else if day == 7 {
        return "Sunday"
    } else {
        return "Invalid day number"
    }
}

facat

5 hours ago

2.55ms

81.13kb

pub fn weekday_from_number(day: u8) -> &'static str {
    // TODO: Implement the function here
    match day{
        1=>"Monday",
        2=>"Tuesday",
        3=>"Wednesday",
        4=>"Thursday",
        5=>"Friday",
        6=>"Saturday",
        7=>"Sunday",
        _=>"Invalid day number"
    }
}

Jaden Wijata

xenonminer

8 hours ago

2.46ms

81.13kb

pub fn weekday_from_number(day: u8) -> &'static str {
    // TODO: Implement the function here
    match day {
        1 => "Monday",
        2 => "Tuesday",
        3 => "Wednesday",
        4 => "Thursday",
        5 => "Friday",
        6 => "Saturday",
        7 => "Sunday",
        _ => "Invalid day number"
    }
}

Esteban Soba

XtebanUy

15 hours ago

2.70ms

81.13kb

pub fn weekday_from_number(day: u8) -> &'static str {
    // TODO: Implement the function here
    match day {
        1 => "Monday",
        2 => "Tuesday",
        3 => "Wednesday",
        4 => "Thursday",
        5 => "Friday",
        6 => "Saturday", 
        7 => "Sunday", 
        _ => "Invalid day number"
    }
}

Andreas

StimhackSoftware

16 hours ago

2.62ms

81.13kb

pub fn weekday_from_number(day: u8) -> &'static str {
    match day {
        1 => "Monday",
        2 => "Tuesday",
        3 => "Wednesday",
        4 => "Thursday",
        5 => "Friday",
        6 => "Saturday",
        7 => "Sunday",
        _x => "Invalid day number",
    }
}

mehdihmr

19 hours ago

2.76ms

81.13kb

pub fn weekday_from_number(day: u8) -> &'static str {
    // TODO: Implement the function here
    match day{
        1 => return "Monday",
        2 => return "Tuesday",
        3 => return "Wednesday",
        4 => return "Thursday",
        5 => return "Friday",
        6 => return "Saturday",
        7 => return "Sunday",
        _ => return "Invalid day number"
    }
}

Mister Woody

MisterWoody

20 hours ago

2.82ms

81.13kb

pub fn weekday_from_number(day: u8) -> &'static str {
    // TODO: Implement the function here
    let day_name = match day {
        1 => "Monday",
        2 => "Tuesday",
        3 => "Wednesday",
        4 => "Thursday",
        5 => "Friday",
        6 => "Saturday",
        7 => "Sunday",
        _ => "Invalid day number",
    };
    day_name
}

Ethel Arterberry

ethel-dev

a day ago

2.84ms

81.13kb

pub fn weekday_from_number(day: u8) -> &'static str {
    match day {
        1 => "Monday",
        2 => "Tuesday",
        3 => "Wednesday",
        4 => "Thursday",
        5 => "Friday",
        6 => "Saturday",
        7 => "Sunday",
        _ => "Invalid day number"
    }
}

Ando “Thor” Nando

DivineGod

a day ago

2.64ms

81.13kb

pub fn weekday_from_number(day: u8) -> &'static str {
    // TODO: Implement the function here
    match day {
        1 => "Monday",
        2 => "Tuesday",
        3 => "Wednesday",
        4 => "Thursday",
        5 => "Friday",
        6 => "Saturday",
        7 => "Sunday",
        _ => "Invalid day number",
    }
}

Algorab

a day ago

3.88ms

81.13kb

pub fn weekday_from_number(day: u8) -> &'static str {
    match day {
        1 => "Monday",
        2 => "Tuesday",
        3 => "Wednesday",
        4 => "Thursday",
        5 => "Friday",
        6 => "Saturday",
        7 => "Sunday",
        _ => "Invalid day number"
    }
}

Felix Kiprotich

penscola

a day ago

2.69ms

81.13kb

pub fn weekday_from_number(day: u8) -> &'static str {
    // TODO: Implement the function here
    match day {
        1 => "Monday",
        2 => "Tuesday",
        3 => "Wednesday",
        4 => "Thursday",
        5 => "Friday",
        6 => "Saturday",
        7 => "Sunday",
        _ => "Invalid day number"
    }
}

Itay

itaygenkin

a day ago

2.63ms

81.13kb

pub fn weekday_from_number(day: u8) -> &'static str {
    // TODO: Implement the function here
    match day {
        1 => return "Monday",
        2 => return "Tuesday",
        3 => return "Wednesday",
        4 => return "Thursday",
        5 => return "Friday",
        6 => return "Saturday",
        7 => return "Sunday",
        _ => return "Invalid day number",
    }
}

Stefan Roas

sroas

a day ago

5.07ms

81.13kb

pub fn weekday_from_number(day: u8) -> &'static str {
    // TODO: Implement the function here
    match day {
        1 => "Monday",
        2 => "Tuesday",
        3 => "Wednesday",
        4 => "Thursday",
        5 => "Friday",
        6 => "Saturday",
        7 => "Sunday",
        _ => "Invalid day number",
    }
}

Felipe Balbi

felipebalbi

a day ago

6.41ms

81.13kb

pub fn weekday_from_number(day: u8) -> &'static str {
    // TODO: Implement the function here
    match day {
        1 => "Monday",
        2 => "Tuesday",
        3 => "Wednesday",
        4 => "Thursday",
        5 => "Friday",
        6 => "Saturday",
        7 => "Sunday",
        _ => "Invalid day number",
    }
}

Daniel Petrov

danielmpetrov

2 days ago

8.72ms

81.13kb

pub fn weekday_from_number(day: u8) -> &'static str {
    match day {
        1 => "Monday",
        2 => "Tuesday",
        3 => "Wednesday",
        4 => "Thursday",
        5 => "Friday",
        6 => "Saturday",
        7 => "Sunday",
        _ => "Invalid day number",
    }
}

chuyuanlinzi

2 days ago

3.67ms

81.13kb

pub fn weekday_from_number(day: u8) -> &'static str {
    // TODO: Implement the function here
    match day {
        1 => "Monday",
        2 => "Tuesday",
        3 => "Wednesday",
        4 => "Thursday",
        5 => "Friday",
        6 => "Saturday",
        7 => "Sunday",
        _ => "Invalid day number",
    }
}

yoakemae

2 days ago

2.86ms

81.13kb

pub fn weekday_from_number(day: u8) -> &'static str {
    // TODO: Implement the function here
    return match day {
        1 => "Monday",
        2 => "Tuesday",
        3 => "Wednesday",
        4 => "Thursday",
        5 => "Friday",
        6 => "Saturday",
        7 => "Sunday",
        _ => "Invalid day number",
    }
}

qiyuan711

3 days ago

2.77ms

81.13kb

pub fn weekday_from_number(day: u8) -> &'static str {
    match day {
        1 => "Monday",
        2 => "Tuesday",
        3 => "Wednesday",
        4 => "Thursday",
        5 => "Friday",
        6 => "Saturday",
        7 => "Sunday",
        _ => "Invalid day number",
    }
}

Jan Willems

3 days ago

2.59ms

81.13kb

pub fn weekday_from_number(day: u8) -> &'static str {
    // TODO: Implement the function here
    match day {
        1 => "Monday",
        2 => "Tuesday",
        3 => "Wednesday",
        4 => "Thursday",
        5 => "Friday",
        6 => "Saturday",
        7 => "Sunday",
        _ => "Invalid day number",
    }
}

Nicky Thorne

nickythorne

3 days ago

2.65ms

81.13kb

pub fn weekday_from_number(day: u8) -> &'static str {
    // TODO: Implement the function here
    match day {
        1 => return "Monday",
        2 => return "Tuesday",
        3 => return "Wednesday",
        4 => return "Thursday",
        5 => return "Friday",
        6 => return "Saturday",
        7 => return "Sunday",
        _ => return "Invalid day number"
    };
}

Philip Mercer

DV-13

3 days ago

2.60ms

81.13kb

pub fn weekday_from_number(day: u8) -> &'static str {
    match day {
        1 => "Monday",
        2 => "Tuesday",
        3 => "Wednesday",
        4 => "Thursday",
        5 => "Friday",
        6 => "Saturday",
        7 => "Sunday",
        _ => "Invalid day number",
    }
}

Philip Mercer

DV-13

3 days ago

2.76ms

81.13kb

pub fn weekday_from_number(day: u8) -> &'static str {
    match day {
        1 => "Monday",
        2 => "Tuesday",
        3 => "Wednesday",
        4 => "Thursday",
        5 => "Friday",
        6 => "Saturday",
        7 => "Sunday",
        _ => "Invalid day number",
    }
}

tinthid

3 days ago

4.22ms

81.13kb

pub fn weekday_from_number(day: u8) -> &'static str {
    // TODO: Implement the function here
    let weekday: Vec<&str> = vec!["Monday", "Tuesday", "Wednesday", "Thursday", "Friday", "Saturday", "Sunday"];
    if day < 1 || day > 7 {
        return "Invalid day number";
    }
    
    weekday[(day - 1) as usize]
}

martin-unit

3 days ago

2.69ms

81.13kb

pub fn weekday_from_number(day: u8) -> &'static str {
    // TODO: Implement the function here
    match day {
        1 => return "Monday",
        2 => return "Tuesday",
        3 => return "Wednesday",
        4 => return "Thursday",
        5 => return "Friday",
        6 => return "Saturday",
        7 => return "Sunday",
        _ => return "Invalid day number"
    }
}

RonaldoArayadev

3 days ago

2.75ms

81.13kb

pub fn weekday_from_number(day: u8) -> &'static str {
    // TODO: Implement the function here
    match day {
        1 => return "Monday",
        2 => return "Tuesday",
        3 => return "Wednesday",
        4 => return "Thursday",
        5 => return "Friday",
        6 => return "Saturday",
        7 => return "Sunday",
        _ => return "Invalid day number"
    }
}

Hudson

dalprahcd

4 days ago

2.74ms

81.13kb

pub fn weekday_from_number(day: u8) -> &'static str {
    match day {
        1 => "Monday",
        2 => "Tuesday",
        3 => "Wednesday",
        4 => "Thursday",
        5 => "Friday",
        6 => "Saturday",
        7 => "Sunday",
        _ => "Invalid day number",
    }
}

vrzwflng

4 days ago

3.27ms

81.13kb

pub fn weekday_from_number(day: u8) -> &'static str {
    match day {
        1 => "Monday",
        2 => "Tuesday",
        3 => "Wednesday",
        4 => "Thursday",
        5 => "Friday",
        6 => "Saturday",
        7 => "Sunday",
        _ => "Invalid day number"
    }
}

Elizabeth Doughty

Thymelizabeth

4 days ago

2.83ms

81.13kb

pub fn weekday_from_number(day: u8) -> &'static str {
    // TODO: Implement the function here
    match day {
        1 => "Monday",
        2 => "Tuesday",
        3 => "Wednesday",
        4 => "Thursday",
        5 => "Friday",
        6 => "Saturday",
        7 => "Sunday",
        _ => "Invalid day number"
    }
}

Masayuki Sunahara

tamanishi

5 days ago

2.77ms

81.13kb

pub fn weekday_from_number(day: u8) -> &'static str {
    // TODO: Implement the function here
    match day {
        1 => "Monday",
        2 => "Tuesday",
        3 => "Wednesday",
        4 => "Thursday",
        5 => "Friday",
        6 => "Saturday",
        7 => "Sunday",
        _ => "Invalid day number",
    }
}

devarajang

5 days ago

2.92ms

81.13kb

pub fn weekday_from_number(day: u8) -> &'static str {
    
    return match day {
        1 => "Monday",
        2 => "Tuesday",
        3 => "Wednesday",
        4 => "Thursday",
        5 => "Friday",
        6 => "Saturday",
        7 => "Sunday",
        _ => "Invalid day number"
    };
}

nichideropa

5 days ago

2.45ms

81.13kb

pub fn weekday_from_number(day: u8) -> &'static str {
    // TODO => Implement the function here
    match day {
        1 => "Monday",
        2 => "Tuesday",
        3 => "Wednesday",
        4 => "Thursday",
        5 => "Friday",
        6 => "Saturday",
        7 => "Sunday",
        _ => "Invalid day number",
    }
}

akshayabhattarai

5 days ago

2.66ms

81.13kb

pub fn weekday_from_number(day: u8) -> &'static str {
    // TODO: Implement the function here
    
    let mut res = match day {
        1 => "Monday",
        2 => "Tuesday",
        3 => "Wednesday",
        4 => "Thursday",
        5 => "Friday",
        6 => "Saturday",
        7 => "Sunday",
        _ => "Invalid day number"
    };
    return res
}

Jan

jeypiti

5 days ago

27.29ms

81.13kb

pub fn weekday_from_number(day: u8) -> &'static str {
    match day {
        1 => "Monday",
        2 => "Tuesday",
        3 => "Wednesday",
        4 => "Thursday",
        5 => "Friday",
        6 => "Saturday",
        7 => "Sunday",
        _ => "Invalid day number"
    }
}

Jan

jeypiti

5 days ago

2.52ms

81.13kb

pub fn weekday_from_number(day: u8) -> &'static str {
    match day {
        1 => "Monday",
        2 => "Tuesday",
        3 => "Wednesday",
        4 => "Thursday",
        5 => "Friday",
        6 => "Saturday",
        7 => "Sunday",
        _ => "Invalid day number"
    }
}

oDqnger

5 days ago

4.21ms

81.13kb

pub fn weekday_from_number(day: u8) -> &'static str {
    match day {
        1 => "Monday",
        2 => "Tuesday",
        3 => "Wednesday",
        4 => "Thursday",
        5 => "Friday",
        6 => "Saturday",
        7 => "Sunday",
        _ => "Invalid day number",
    }
}

s.konishi

konishu

5 days ago

4.60ms

81.13kb

pub fn weekday_from_number(day: u8) -> &'static str {
    match day {
        1 => "Monday",
        2 => "Tuesday",
        3 => "Wednesday",
        4 => "Thursday",
        5 => "Friday",
        6 => "Saturday",
        7 => "Sunday",
        _ => "Invalid day number",
    }
}

0xsmarter

6 days ago

2.80ms

81.13kb

pub fn weekday_from_number(day: u8) -> &'static str {
    // TODO: Implement the function here
    match day {
        1 => "Monday",
        2 => "Tuesday",
        3 => "Wednesday",
        4 => "Thursday",
        5 => "Friday",
        6 => "Saturday",
        7 => "Sunday",
        _ => "Invalid day number"
    }
}

Jörg Erdmenger

joeslow

6 days ago

3.20ms

81.13kb

pub fn weekday_from_number(day: u8) -> &'static str {
    // TODO: Implement the function here
    match day {
        1 => "Monday",
        2 => "Tuesday",
        3 => "Wednesday",
        4 => "Thursday",
        5 => "Friday",
        6 => "Saturday",
        7 => "Sunday",
        _ => "Invalid day number"
    }
}

Jörg Erdmenger

joeslow

6 days ago

4.06ms

81.13kb

pub fn weekday_from_number(day: u8) -> &'static str {
    // TODO: Implement the function here
    match day {
        1 => "Monday",
        2 => "Tuesday",
        3 => "Wednesday",
        4 => "Thursday",
        5 => "Friday",
        6 => "Saturday",
        7 => "Sunday",
        _ => "Invalid day number"
    }
}

madeinheaven91

6 days ago

3.31ms

81.13kb

pub fn weekday_from_number(day: u8) -> &'static str {
    // TODO: Implement the function here
    match day{
        1 => "Monday",
        2 => "Tuesday",
        3 => "Wednesday",
        4 => "Thursday",
        5 => "Friday",
        6 => "Saturday",
        7 => "Sunday",
        _ => "Invalid day number"
    }
}

t3stlab

6 days ago

3.26ms

81.13kb

pub fn weekday_from_number(day: u8) -> &'static str {
    match day {
        1 => "Monday",
        2 => "Tuesday",
        3 => "Wednesday",
        4 => "Thursday",
        5 => "Friday",
        6 => "Saturday",
        7 => "Sunday",
        _ => "Invalid day number"
    }
}

aidan1magee

6 days ago

2.57ms

81.13kb

pub fn weekday_from_number(day: u8) -> &'static str {
    // TODO: Implement the function here
    match day {
        1 => "Monday",
        2 => "Tuesday",
        3 => "Wednesday",
        4 => "Thursday",
        5 => "Friday",
        6 => "Saturday",
        7 => "Sunday",
        _ => "Invalid day number"
    }
}

Ankeet Parikh

ankeetparikh

7 days ago

2.91ms

81.13kb

pub fn weekday_from_number(day: u8) -> &'static str {
    // TODO: Implement the function here
    match day {
        1 => "Monday",
        2 => "Tuesday",
        3 => "Wednesday",
        4 => "Thursday",
        5 => "Friday",
        6 => "Saturday",
        7 => "Sunday",
        _ => "Invalid day number"
    }
}

38911BytesFree

7 days ago

2.75ms

81.13kb

pub fn weekday_from_number(day: u8) -> &'static str {
    match day {
        1 => "Monday",
        2 => "Tuesday",
        3 => "Wednesday",
        4 => "Thursday",
        5 => "Friday",
        6 => "Saturday",
        7 => "Sunday",
        _ => "Invalid day number"
    }
}

maxvi

7 days ago

3.35ms

81.13kb

pub fn weekday_from_number(day: u8) -> &'static str {
    match day {
        1 => "Monday",
        2 => "Tuesday",
        3 => "Wednesday",
        4 => "Thursday",
        5 => "Friday",
        6 => "Saturday",
        7 => "Sunday",
        _ => "Invalid day number",
    }
}

Samori Gorse

shinuza

7 days ago

2.80ms

81.13kb


pub fn weekday_from_number(day: u8) -> &'static str {
     match day {
        1 => "Monday",
        2 => "Tuesday",
        3 => "Wednesday",
        4 => "Thursday",
        5 => "Friday",
        6 => "Saturday",
        7 => "Sunday",
        _ => "Invalid day number"
    }
}

koslowskio

7 days ago

2.66ms

81.13kb

pub fn weekday_from_number(day: u8) -> &'static str {
    let result =  match day {
        1 => "Monday",
        2 => "Tuesday",
        3 => "Wednesday",
        4 => "Thursday",
        5 => "Friday",
        6 => "Saturday",
        7 => "Sunday",
        _ => "Invalid day number"
    };
    return result
}