Using Option<T> for Optional Values

Rust's Option<T> is a powerful enum type that represents a value that might or might not be present. It is often used to safely handle cases where a value could be missing or invalid.

The Option<T> enum has two variants:

Some(T) which contains a value of type T.
None which signifies the absence of a value.

Your Task

In this challenge, you will implement a function find_first_even that takes a list of integers and returns the first even number in the list wrapped in Some. If no even number is present, the function should return None.

For example:

If the input list is [1, 3, 5, 8, 10], the function should return Some(8).
If the input list is [1, 3, 5], the function should return None.

Your task is to implement the function so it correctly handles any list of integers.

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Solutions

Christopher Kolbe

chkolbe

14 hours ago

3.89ms

89.25kb

pub fn find_first_even(numbers: &[i32]) -> Option<i32> {
    // Your code here...
    numbers.iter().find(|x| *x % 2 == 0).copied()
}
// Example usage
pub fn main() {
    let nums1 = vec![1, 3, 5, 8];
    let nums2 = vec![1, 3, 5];
    println!("{:?}", find_first_even(&nums1)); // Output: Some(8)
    println!("{:?}", find_first_even(&nums2)); // Output: None
}

Luigi Terrone

LuigiTer

18 hours ago

3.67ms

89.25kb

pub fn find_first_even(numbers: &[i32]) -> Option<i32> {
    // Your code here...
    numbers.iter().find(|x| *x % 2 == 0).copied()
}
// Example usage
pub fn main() {
    let nums1 = vec![1, 3, 5, 8];
    let nums2 = vec![1, 3, 5];
    println!("{:?}", find_first_even(&nums1)); // Output: Some(8)
    println!("{:?}", find_first_even(&nums2)); // Output: None
}

Leo Phạm

HongThaiPham

a day ago

4.06ms

89.25kb

pub fn find_first_even(numbers: &[i32]) -> Option<i32> {
    numbers.iter().find(|&i| i%2==0).copied()
}
// Example usage
pub fn main() {
    let nums1 = vec![1, 3, 5, 8];
    let nums2 = vec![1, 3, 5];
    println!("{:?}", find_first_even(&nums1)); // Output: Some(8)
    println!("{:?}", find_first_even(&nums2)); // Output: None
}

Heino Mortensen

hmortensen83

2 days ago

4.19ms

89.23kb

pub fn find_first_even(numbers: &[i32]) -> Option<i32> {
    numbers.iter().find(|&i| i % 2 == 0).copied()
}
// Example usage
pub fn main() {
    let nums1 = vec![1, 3, 5, 8];
    let nums2 = vec![1, 3, 5];
    println!("{:?}", find_first_even(&nums1)); // Output: Some(8)
    println!("{:?}", find_first_even(&nums2)); // Output: None
}

0x0f1

Paul4673

2 days ago

4.23ms

89.25kb

pub fn find_first_even(numbers: &[i32]) -> Option<i32> {
    numbers.iter().find(|&n| n%2==0).copied()
}
// Example usage
pub fn main() {
    let nums1 = vec![1, 3, 5, 8];
    let nums2 = vec![1, 3, 5];
    println!("{:?}", find_first_even(&nums1)); // Output: Some(8)
    println!("{:?}", find_first_even(&nums2)); // Output: None
}

0x0f1

Paul4673

2 days ago

5.04ms

89.23kb

pub fn find_first_even(numbers: &[i32]) -> Option<i32> {
    for number in numbers.iter(){
        if number % 2 == 0 {
            return Some(*number)
        }
    }
    None
}
// Example usage
pub fn main() {
    let nums1 = vec![1, 3, 5, 8];
    let nums2 = vec![1, 3, 5];
    println!("{:?}", find_first_even(&nums1)); // Output: Some(8)
    println!("{:?}", find_first_even(&nums2)); // Output: None
}

dattruongdev

3 days ago

5.26ms

89.25kb

pub fn find_first_even(numbers: &[i32]) -> Option<i32> {
    // Your code here...
    for num in numbers {
        if *num % 2 == 0 {
            return Some(*num);
        }
    }
    None
}
// Example usage
pub fn main() {
    let nums1 = vec![1, 3, 5, 8];
    let nums2 = vec![1, 3, 5];
    println!("{:?}", find_first_even(&nums1)); // Output: Some(8)
    println!("{:?}", find_first_even(&nums2)); // Output: None
}

esl

esl07

3 days ago

3.75ms

89.25kb

pub fn find_first_even(numbers: &[i32]) -> Option<i32> {
    numbers.iter().find(|&n| n % 2 == 0).copied()
}
// Example usage
pub fn main() {
    let nums1 = vec![1, 3, 5, 8];
    let nums2 = vec![1, 3, 5];
    println!("{:?}", find_first_even(&nums1)); // Output: Some(8)
    println!("{:?}", find_first_even(&nums2)); // Output: None
}

Satya Sundar Sahu

satya200

4 days ago

5.14ms

89.25kb

pub fn find_first_even(numbers: &[i32]) -> Option<i32> {
    // Your code here...
    for i in numbers {
        if *i % 2 == 0 {
            return Some(*i);
        }
    }
    None
}
// Example usage
pub fn main() {
    let nums1 = vec![1, 3, 5, 8];
    let nums2 = vec![1, 3, 5];
    println!("{:?}", find_first_even(&nums1)); // Output: Some(8)
    println!("{:?}", find_first_even(&nums2)); // Output: None
}

Gomathi Shankar

gomathishankar37

4 days ago

4.32ms

89.25kb

pub fn find_first_even(numbers: &[i32]) -> Option<i32> {
    // Your code here...
    for i in numbers {
        if i%2 == 0 {
            return Some(*i);
        }
    }
    None
}
// Example usage
pub fn main() {
    let nums1 = vec![1, 3, 5, 8];
    let nums2 = vec![1, 3, 5];
    println!("{:?}", find_first_even(&nums1)); // Output: Some(8)
    println!("{:?}", find_first_even(&nums2)); // Output: None
}

xxxxsk

4 days ago

4.64ms

89.23kb

pub fn find_first_even(numbers: &[i32]) -> Option<i32> {
    // Your code here...
    numbers.iter().find(|&&x| x % 2 == 0).cloned()
}
// Example usage
pub fn main() {
    let nums1 = vec![1, 3, 5, 8];
    let nums2 = vec![1, 3, 5];
    println!("{:?}", find_first_even(&nums1)); // Output: Some(8)
    println!("{:?}", find_first_even(&nums2)); // Output: None
}

silaskoemen

4 days ago

4.17ms

89.25kb

pub fn find_first_even(numbers: &[i32]) -> Option<i32> {
    for &num in numbers.iter() {
        if num % 2 == 0 {
            return Some(num);
        }
    }
    None
}
// Example usage
pub fn main() {
    let nums1 = vec![1, 3, 5, 8];
    let nums2 = vec![1, 3, 5];
    println!("{:?}", find_first_even(&nums1)); // Output: Some(8)
    println!("{:?}", find_first_even(&nums2)); // Output: None
}

Sarthak Mishra

sithtsar

5 days ago

4.47ms

89.25kb

pub fn find_first_even(numbers: &[i32]) -> Option<i32> {
    // Your Code Here....
    for &num in numbers.iter() {
        if num % 2 == 0 {
            return Some(num);
        }
    }
    None
}
// Example usage
pub fn main() {
    let nums1 = vec![1, 3, 5, 8];
    let nums2 = vec![1, 3, 5];
    println!("{:?}", find_first_even(&nums1)); // Output: Some(8)
    println!("{:?}", find_first_even(&nums2)); // Output: None
}

Pierre Gordo

PierreGordo

6 days ago

4.66ms

89.23kb

pub fn find_first_even(numbers: &[i32]) -> Option<i32> {
    // Your code here...
    for number in numbers.iter(){
        if number%2 == 0{
            return Some(*number)
        }
    }
    return None
}
// Example usage
pub fn main() {
    let nums1 = vec![1, 3, 5, 8];
    let nums2 = vec![1, 3, 5];
    println!("{:?}", find_first_even(&nums1)); // Output: Some(8)
    println!("{:?}", find_first_even(&nums2)); // Output: None
}

hahu07

7 days ago

4.02ms

89.23kb

pub fn find_first_even(numbers: &[i32]) -> Option<i32> {
    // Your code here...
  numbers.iter().find(|num| *num % 2 == 0).copied()
}
// Example usages
pub fn main() {
    let nums1 = vec![1, 3, 5, 8];
    let nums2 = vec![1, 3, 5];
    println!("{:?}", find_first_even(&nums1)); // Output: Some(8)
    println!("{:?}", find_first_even(&nums2)); // Output: None
}

Lucop1911

8 days ago

4.55ms

89.25kb

pub fn find_first_even(numbers: &[i32]) -> Option<i32> {
    // Your code here...
    numbers.iter().find(|number| *number % 2 == 0).copied()
}
// Example usage
pub fn main() {
    let nums1 = vec![1, 3, 5, 8];
    let nums2 = vec![1, 3, 5];
    println!("{:?}", find_first_even(&nums1)); // Output: Some(8)
    println!("{:?}", find_first_even(&nums2)); // Output: None
}

ikatlinsky

11 days ago

4.79ms

89.25kb

pub fn find_first_even(numbers: &[i32]) -> Option<i32> {
    for &n in numbers {
        if n % 2 == 0 {
            return Some(n);
        }
    }
    return None;
}
// Example usage
pub fn main() {
    let nums1 = vec![1, 3, 5, 8];
    let nums2 = vec![1, 3, 5];
    println!("{:?}", find_first_even(&nums1)); // Output: Some(8)
    println!("{:?}", find_first_even(&nums2)); // Output: None
}

diucicd

13 days ago

4.03ms

89.25kb

pub fn find_first_even(numbers: &[i32]) -> Option<i32> {
    numbers.iter().find(|&x| x % 2 == 0).copied()
}
// Example usage
pub fn main() {
    let nums1 = vec![1, 3, 5, 8];
    let nums2 = vec![1, 3, 5];
    println!("{:?}", find_first_even(&nums1)); // Output: Some(8)
    println!("{:?}", find_first_even(&nums2)); // Output: None
}

Hendrik Dreesmann

DeemanOne

14 days ago

4.78ms

89.25kb

pub fn find_first_even(numbers: &[i32]) -> Option<i32> {
    // Your code here...
    for n in numbers {
        if n % 2 == 0 {
            return Some(*n)
        }
    }
    return None
}
// Example usage
pub fn main() {
    let nums1 = vec![1, 3, 5, 8];
    let nums2 = vec![1, 3, 5];
    println!("{:?}", find_first_even(&nums1)); // Output: Some(8)
    println!("{:?}", find_first_even(&nums2)); // Output: None
}

ycgw

14 days ago

4.33ms

89.23kb

pub fn find_first_even(numbers: &[i32]) -> Option<i32> {
    for &i in numbers {
        if i % 2 == 0 {
            return Some(i);
        }
    }
    None
}
// Example usage
pub fn main() {
    let nums1 = vec![1, 3, 5, 8];
    let nums2 = vec![1, 3, 5];
    println!("{:?}", find_first_even(&nums1)); // Output: Some(8)
    println!("{:?}", find_first_even(&nums2)); // Output: None
}

AQian

AQian0

18 days ago

4.74ms

89.25kb

pub fn find_first_even(numbers: &[i32]) -> Option<i32> {
    // Your code here...
    numbers.iter().find(|number| *number % 2 == 0).cloned()
}
// Example usage
pub fn main() {
    let nums1 = vec![1, 3, 5, 8];
    let nums2 = vec![1, 3, 5];
    println!("{:?}", find_first_even(&nums1)); // Output: Some(8)
    println!("{:?}", find_first_even(&nums2)); // Output: None
}

annececiledunand

19 days ago

4.61ms

89.25kb

pub fn find_first_even(numbers: &[i32]) -> Option<i32> {
    for number in numbers {
        if number % 2 == 0 {
            return Some(*number);
        }
    }
    None
}
// Example usage
pub fn main() {
    let nums1 = vec![1, 3, 5, 8];
    let nums2 = vec![1, 3, 5];
    println!("{:?}", find_first_even(&nums1)); // Output: Some(8)
    println!("{:?}", find_first_even(&nums2)); // Output: None
}

Sergey Matyash

matiaspub

20 days ago

3.95ms

89.23kb

pub fn find_first_even(numbers: &[i32]) -> Option<i32> {
    for n in numbers {
        if n % 2 == 0 {
            return Some(*n);
        }
    }
    None
}
// Example usage
pub fn main() {
    let nums1 = vec![1, 3, 5, 8];
    let nums2 = vec![1, 3, 5];
    println!("{:?}", find_first_even(&nums1)); // Output: Some(8)
    println!("{:?}", find_first_even(&nums2)); // Output: None
}

GregGorin

20 days ago

4.86ms

89.25kb

pub fn find_first_even(numbers: &[i32]) -> Option<i32> {
    // Your code here...
    let mut rez = None;
    for el in numbers{
        if el%2 == 0 {
            rez = Some(el).copied();
            break;
        }
    };
    
    rez
}
// Example usage
pub fn main() {
    let nums1 = vec![1, 3, 5, 8];
    let nums2 = vec![1, 3, 5];
    println!("{:?}", find_first_even(&nums1)); // Output: Some(8)
    println!("{:?}", find_first_even(&nums2)); // Output: None
}

GregGorin

20 days ago

4.31ms

89.25kb

pub fn find_first_even(numbers: &[i32]) -> Option<i32> {
    // Your code here...
    let mut rez = None;
    for el in numbers{
        if el%2 == 0 {
            rez = Some(el).copied();
            break;
        }
    };
    
    rez
}
// Example usage
pub fn main() {
    let nums1 = vec![1, 3, 5, 8];
    let nums2 = vec![1, 3, 5];
    println!("{:?}", find_first_even(&nums1)); // Output: Some(8)
    println!("{:?}", find_first_even(&nums2)); // Output: None
}

Ajit Kumar

urwithajit9

20 days ago

4.06ms

89.25kb

// pub fn find_first_even(numbers: &[i32]) -> Option<i32> {
//     for &number in numbers{
//         if number % 2 == 0{
//             return Some(number);
//         }
//     }
//     return None;
// }
pub fn find_first_even(numbers: &[i32]) -> Option<i32> {
    for number in numbers{
        if number % 2 == 0{
            return Some(*number);
        }
    }
    return None;
}
// Example usage
pub fn main() {
    let nums1 = vec![1, 3, 5, 8];
    let nums2 = vec![1, 3, 5];
    println!("{:?}", find_first_even(&nums1)); // Output: Some(8)
    println!("{:?}", find_first_even(&nums2)); // Output: None
}

AlphaN00mer1cal

21 days ago

4.69ms

89.25kb


pub fn find_first_even(numbers: &[i32]) -> Option<i32> {
    for &num in numbers {
        if num % 2 == 0 {
            return Some(num);
        }
    }
    None
}
// Example usage
pub fn main() {
    let nums1 = vec![1, 3, 5, 8];
    let nums2 = vec![1, 3, 5];
    println!("{:?}", find_first_even(&nums1)); // Output: Some(8)
    println!("{:?}", find_first_even(&nums2)); // Output: None
}

LeonardoPinheiro23

21 days ago

4.05ms

89.23kb

pub fn find_first_even(numbers: &[i32]) -> Option<i32> {
    for &number in numbers.iter() {
        if number % 2 == 0 {
            return Some(number);
        }
    }
    None
}
// Example usage
pub fn main() {
    let nums1 = vec![1, 3, 5, 8];
    let nums2 = vec![1, 3, 5];
    println!("{:?}", find_first_even(&nums1)); // Output: Some(8)
    println!("{:?}", find_first_even(&nums2)); // Output: None
}

zapp42

21 days ago

4.67ms

89.23kb

pub fn find_first_even(numbers: &[i32]) -> Option<i32> {
    for num in numbers {
        if num % 2 == 0 {
            return Some(*num);
        }
    }
    None
}
// Example usage
pub fn main() {
    let nums1 = vec![1, 3, 5, 8];
    let nums2 = vec![1, 3, 5];
    println!("{:?}", find_first_even(&nums1)); // Output: Some(8)
    println!("{:?}", find_first_even(&nums2)); // Output: None
}

Maicon Crespo

maiconcrespo

21 days ago

4.28ms

89.23kb

pub fn find_first_even(numbers: &[i32]) -> Option<i32> {
    numbers.iter().find(|&&n| n % 2 == 0).copied()
}
// Example usage
pub fn main() {
    let nums1 = vec![1, 3, 5, 8];
    let nums2 = vec![1, 3, 5];
    println!("{:?}", find_first_even(&nums1)); // Output: Some(8)
    println!("{:?}", find_first_even(&nums2)); // Output: None
}

wry

Liudel

22 days ago

4.57ms

89.25kb

pub fn find_first_even(numbers: &[i32]) -> Option<i32> {
    // Your code here...
    numbers.iter().find(|&&x| x % 2 == 0).copied()
}
// Example usage
pub fn main() {
    let nums1 = vec![1, 3, 5, 8];
    let nums2 = vec![1, 3, 5];
    println!("{:?}", find_first_even(&nums1)); // Output: Some(8)
    println!("{:?}", find_first_even(&nums2)); // Output: None
}

Anatma2

22 days ago

4.20ms

89.23kb

pub fn find_first_even(numbers: &[i32]) -> Option<i32> {
    for n in numbers {
        if n % 2 == 0 {return Some(*n);}
    }
    return None;
}
// Example usage
pub fn main() {
    let nums1 = vec![1, 3, 5, 8];
    let nums2 = vec![1, 3, 5];
    println!("{:?}", find_first_even(&nums1)); // Output: Some(8)
    println!("{:?}", find_first_even(&nums2)); // Output: None
}

Anatma2

22 days ago

4.69ms

89.25kb

pub fn find_first_even(numbers: &[i32]) -> Option<i32> {
    let n_iter = numbers.iter();
    for n in n_iter {
        if n % 2 == 0 {return Some(*n);}
    }
    return None;
}
// Example usage
pub fn main() {
    let nums1 = vec![1, 3, 5, 8];
    let nums2 = vec![1, 3, 5];
    println!("{:?}", find_first_even(&nums1)); // Output: Some(8)
    println!("{:?}", find_first_even(&nums2)); // Output: None
}

jbrakmic

23 days ago

5.03ms

89.23kb

pub fn find_first_even(numbers: &[i32]) -> Option<i32> {
    // Your code here...
    numbers.iter().find(|i| *i % 2 == 0).map(|i| *i)
}
// Example usage
pub fn main() {
    let nums1 = vec![1, 3, 5, 8];
    let nums2 = vec![1, 3, 5];
    
    println!("{:?}", find_first_even(&nums1)); // Output: Some(8)
    println!("{:?}", find_first_even(&nums2)); // Output: None
}

Saksinkarn Petchkuljinda

dward2nd

24 days ago

4.93ms

89.25kb

pub fn find_first_even(numbers: &[i32]) -> Option<i32> {
    // Your code here...
    for element in numbers.iter() {
        if element % 2 == 0 {
            return Some(*element);
        }
    }
    None
}
// Example usage
pub fn main() {
    let nums1 = vec![1, 3, 5, 8];
    let nums2 = vec![1, 3, 5];
    println!("{:?}", find_first_even(&nums1)); // Output: Some(8)
    println!("{:?}", find_first_even(&nums2)); // Output: None
}

Travis

ttmgraham

24 days ago

6.16ms

89.23kb

pub fn find_first_even(numbers: &[i32]) -> Option<i32> {
    for num in numbers {
        if num % 2 == 0 {
           return Some(*num);
        }
    }
    return None;
}
// Example usage
pub fn main() {
    let nums1 = vec![1, 3, 5, 8];
    let nums2 = vec![1, 3, 5];
    println!("{:?}", find_first_even(&nums1)); // Output: Some(8)
    println!("{:?}", find_first_even(&nums2)); // Output: None
}

Tommytto

25 days ago

5.81ms

89.23kb

pub fn find_first_even(numbers: &[i32]) -> Option<i32> {
    // Your code here...
    for num in numbers {
        if num % 2 == 0 {
            return Some(*num)
        }
    }
    return None
}
// Example usage
pub fn main() {
    let nums1 = vec![1, 3, 5, 8];
    let nums2 = vec![1, 3, 5];
    println!("{:?}", find_first_even(&nums1)); // Output: Some(8)
    println!("{:?}", find_first_even(&nums2)); // Output: None
}

Kenas Zogara

kenaszogara

25 days ago

5.11ms

89.23kb

pub fn find_first_even(numbers: &[i32]) -> Option<i32> {
    // Your code here...
    for n in numbers.iter() {
        if n % 2 == 0 {
            return Some(*n)
        }
    }
    return None
}
// Example usage
pub fn main() {
    let nums1 = vec![1, 3, 5, 8];
    let nums2 = vec![1, 3, 5];
    println!("{:?}", find_first_even(&nums1)); // Output: Some(8)
    println!("{:?}", find_first_even(&nums2)); // Output: None
}

Erik Hollembeak

futureperfect

25 days ago

5.94ms

89.23kb

pub fn find_first_even(numbers: &[i32]) -> Option<i32> {
    numbers.iter().find(|&&n| n % 2 == 0).copied()
}
// Example usage
pub fn main() {
    let nums1 = vec![1, 3, 5, 8];
    let nums2 = vec![1, 3, 5];
    println!("{:?}", find_first_even(&nums1)); // Output: Some(8)
    println!("{:?}", find_first_even(&nums2)); // Output: None
}

Joerg Schad

joerg84

a month ago

5.10ms

89.25kb

pub fn find_first_even(numbers: &[i32]) -> Option<i32> {
    for number in numbers {
        if number % 2 == 0 {
            return Some(*number)
        }
    }
    return None
}
// Example usage
pub fn main() {
    let nums1 = vec![1, 3, 5, 8];
    let nums2 = vec![1, 3, 5];
    println!("{:?}", find_first_even(&nums1)); // Output: Some(8)
    println!("{:?}", find_first_even(&nums2)); // Output: None
}

sjmellor

a month ago

4.88ms

89.23kb

pub fn find_first_even(numbers: &[i32]) -> Option<i32> {
    // Your code here...
    for number in numbers {
        if number % 2 == 0 {
            return Some(*number);
        }
    }
    None
}
// Example usage
pub fn main() {
    let nums1 = vec![1, 3, 5, 8];
    let nums2 = vec![1, 3, 5];
    println!("{:?}", find_first_even(&nums1)); // Output: Some(8)
    println!("{:?}", find_first_even(&nums2)); // Output: None
}

thaisonho

a month ago

4.10ms

89.25kb

pub fn find_first_even(numbers: &[i32]) -> Option<i32> {
    // Your code here...
    for number in numbers {
        if number & 1 != 1 {
            return Some(*number);
        }
    }
    return None;
}
// Example usage
pub fn main() {
    let nums1 = vec![1, 3, 5, 8];
    let nums2 = vec![1, 3, 5];
    println!("{:?}", find_first_even(&nums1)); // Output: Some(8)
    println!("{:?}", find_first_even(&nums2)); // Output: None
}

thaisonho

a month ago

3.73ms

89.25kb

pub fn find_first_even(numbers: &[i32]) -> Option<i32> {
    // Your code here...
    for number in numbers {
        if number & 1 != 1 {
            return Some(*number);
        }
    }
    return None;
}
// Example usage
pub fn main() {
    let nums1 = vec![1, 3, 5, 8];
    let nums2 = vec![1, 3, 5];
    println!("{:?}", find_first_even(&nums1)); // Output: Some(8)
    println!("{:?}", find_first_even(&nums2)); // Output: None
}

Sergejs Kostjucenko

sergejparity

a month ago

3.91ms

89.25kb

pub fn find_first_even(numbers: &[i32]) -> Option<i32> {
    for number in numbers {
        if number % 2 == 0 { return Some(*number)};
    }
    return None;
}
// Example usage
pub fn main() {
    let nums1 = vec![1, 3, 5, 8];
    let nums2 = vec![1, 3, 5];
    println!("{:?}", find_first_even(&nums1)); // Output: Some(8)
    println!("{:?}", find_first_even(&nums2)); // Output: None
}

Sergejs Kostjucenko

sergejparity

a month ago

3.73ms

89.25kb

pub fn find_first_even(numbers: &[i32]) -> Option<i32> {
    for number in numbers {
        match number {
            num if num % 2 == 0 => return Some(num.clone()),
            _ => None::<i32>,
        };
    }
    return None;
}
// Example usage
pub fn main() {
    let nums1 = vec![1, 3, 5, 8];
    let nums2 = vec![1, 3, 5];
    println!("{:?}", find_first_even(&nums1)); // Output: Some(8)
    println!("{:?}", find_first_even(&nums2)); // Output: None
}

Zeno

djeanql

a month ago

4.29ms

89.25kb

pub fn find_first_even(numbers: &[i32]) -> Option<i32> {
    for num in numbers {
        if num % 2 == 0 {
            return Some(*num)
        }
    }
    None
}
// Example usage
pub fn main() {
    let nums1 = vec![1, 3, 5, 8];
    let nums2 = vec![1, 3, 5];
    println!("{:?}", find_first_even(&nums1)); // Output: Some(8)
    println!("{:?}", find_first_even(&nums2)); // Output: None
}

Holger Knauer

hknauer

a month ago

4.14ms

89.25kb

pub fn find_first_even(numbers: &[i32]) -> Option<i32> {
    // Your code here...
    numbers.iter().find(|x| *x%2==0).copied()
}
// Example usage
pub fn main() {
    let nums1 = vec![1, 3, 5, 8];
    let nums2 = vec![1, 3, 5];
    println!("{:?}", find_first_even(&nums1)); // Output: Some(8)
    println!("{:?}", find_first_even(&nums2)); // Output: None
}

Augsorn Chanklad

up2code

a month ago

3.69ms

89.25kb

pub fn find_first_even(numbers: &[i32]) -> Option<i32> {
    // Your code here...
    for &i in numbers {
        if i % 2 == 0 {
            return Some(i)
        }
    }
    None
}
// Example usage
pub fn main() {
    let nums1 = vec![1, 3, 5, 8];
    let nums2 = vec![1, 3, 5];
    println!("{:?}", find_first_even(&nums1)); // Output: Some(8)
    println!("{:?}", find_first_even(&nums2)); // Output: None
}

zirkzee77

a month ago

3.96ms

89.23kb

pub fn find_first_even(numbers: &[i32]) -> Option<i32> {
    // Your code here...
    for num in numbers.iter() {
        if num % 2 == 0 {
            return Some(*num)
        }
    }
    None
}
// Example usage
pub fn main() {
    let nums1 = vec![1, 3, 5, 8];
    let nums2 = vec![1, 3, 5];
    println!("{:?}", find_first_even(&nums1)); // Output: Some(8)
    println!("{:?}", find_first_even(&nums2)); // Output: None
}

Stas

nevmstas

a month ago

4.88ms

89.25kb

pub fn find_first_even(numbers: &[i32]) -> Option<i32> {
    if let Some(number) = numbers.iter().filter(|number| *number % 2 == 0).next() {
        return Some(*number)
    }
    None
}
// Example usage
pub fn main() {
    let nums1 = vec![1, 3, 5, 8];
    let nums2 = vec![1, 3, 5];
    println!("{:?}", find_first_even(&nums1)); // Output: Some(8)
    println!("{:?}", find_first_even(&nums2)); // Output: None
}