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

Ayushman Rathore

Spartan09

9 hours ago

7.58ms

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"
    }
}

Lucas Deprit

lucasdeprit

9 hours ago

2.71ms

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"
    }
}

AKA.MoneyTaker

M4Bo2

2 days ago

3.13ms

81.13kb

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

manuelmj

4 days ago

3.52ms

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", 
    }
}

Éric Villani

TheTrueCaligari

7 days ago

2.96ms

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",
    }
}

Yi Hao

leongyihao

8 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"
	}
}

Jordan

Jordan-Haidee

11 days 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", 
    }
}

Jordan

Jordan-Haidee

11 days ago

3.14ms

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", 
    }
}

Nikita Smirnov

Nismirno

12 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",
    }
}

Christopher Nielson

c-nielson

15 days ago

4.82ms

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"
    }
}

SeinPierre

16 days ago

2.89ms

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"
    }
}

Donald Huber-Youmans

dHuberYoumans

17 days ago

2.76ms

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"
    }
}

Elliott Draper

ejdraper

19 days ago

2.70ms

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"
    }
}

Whisper_icoma

1378046967

19 days ago

3.66ms

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",
    }
}

Jonathan Voss

jvoss

20 days ago

5.50ms

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"
    }
}

0xMushow

20 days ago

3.47ms

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",
    }
}

エヴァンゲリオン

Lu-zihang

22 days ago

2.63ms

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",
    }
}

hemulya

23 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",
    }
}

Sthitaprajna Sahu

sthitasahu

24 days ago

3.36ms

81.13kb

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

Florian Gaudin-Delrieu

FlorianGD

24 days ago

2.81ms

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"
    }
}

Toshikazu Fukushima

fukushima-toshi-exnoa

24 days ago

7.87ms

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"
    }
}

raydive

a month ago

2.88ms

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",
    }
}

dawwestk

a month ago

3.66ms

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",
    }
}

PangoSea

kapaseker

a month ago

4.58ms

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",
    }
}

Sakura

sakkura

a month ago

5.02ms

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"
    }
}

Vladimir

PavluninVladimir

a month ago

2.70ms

81.13kb

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

Dominicm99

a month ago

2.67ms

81.13kb

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

Ahmet Özcan

ahmetoozcan

a month ago

3.68ms

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",
    }
}

Bugra Okumus

bgraokmush

a month ago

2.86ms

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",
    }
}

jud3ies

a month ago

2.71ms

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",
    }
}

Mikhail Shutov

mshutov

a month ago

2.67ms

81.13kb

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

Jadoski™

oelun-in

a month ago

2.65ms

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",
    }
}

vikingNR

a month ago

2.69ms

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",
    }
    // TODO: Implement the function here
}

PavelPerna

a month ago

3.53ms

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"
    }
}

rawar089

a month ago

3.06ms

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"
    }
}

Pathan Khaleedh Khan

KhaleedhKhan

a month 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",
        0 | 8.. => "Invalid day number"
    }
}

Tplive

tplive

a month 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",
        0 | 8.. => "Invalid day number"
    }
}

Tengz Mao

MaoX-Yu

a month ago

8.20ms

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",
    }
}

Tom Cline

tom-cline

a month ago

5.10ms

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",
    }
}

Stan

i2z4

a month ago

3.02ms

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",
    }
}

Vlad

mvldmihai

a month ago

2.47ms

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",
    }
}

neonwarp

a month ago

2.73ms

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",
    }
}

Dhananjay Pandit

djpandit007

a month ago

2.53ms

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",
    }
}

matsuyama-k1

a month ago

2.77ms

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"
    }
    
}

KuZo1304

a month 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",
    }
}

Mohamed Elkebir

elkebirmed

a month ago

3.23ms

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",
    }
}

Kohei Matsubara

matsuby

a month ago

4.09ms

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",
    }
}

Takuro Niitsuma

otakumesi

a month ago

2.98ms

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"
    }
}

kada-s

sy34

a month ago

3.04ms

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",
    }
}

Robin Le Caignec

Le-Caignec

a month ago

2.96ms

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",
   }
}