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

PreppyMiguel

lusuo9

9 hours ago

4.04ms

89.25kb

pub fn find_first_even(numbers: &[i32]) -> Option<i32> {
    // Your code here...
    for x in numbers {
        if *x % 2 == 0 {
            return Some(*x);
        }
    }
    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
}

PreppyMiguel

lusuo9

9 hours ago

4.28ms

89.23kb

pub fn find_first_even(numbers: &[i32]) -> Option<i32> {
    // Your code here...
    for x in numbers {
        if *x % 2 == 0 {
            return Some(*x);
        }
    }
    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
}

Özgür

AyikOzgur

a day ago

4.22ms

89.25kb

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
}

emiludenz

a day ago

4.05ms

89.25kb

pub fn find_first_even(numbers: &[i32]) -> Option<i32> {
    // Your code here...
    for i in numbers.iter() {
        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
}

Anthony Young

A-Young-Git

2 days ago

3.81ms

89.25kb

pub fn find_first_even(numbers: &[i32]) -> Option<i32> {
    numbers.iter().copied().find(|n| n % 2 == 0)
}
// 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
}

azmahflameheart

3 days ago

3.76ms

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);
        }
    }
    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
}

Egu0

egu0

3 days ago

3.66ms

89.25kb

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
}

Marouan Boulahtouf

MBoulahtouf

4 days ago

4.33ms

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); 
        }
    }
    None*/
    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
}

Marouan Boulahtouf

MBoulahtouf

4 days ago

4.81ms

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); 
        }
    }
    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
}

LawisChen

6 days ago

6.50ms

89.25kb

pub fn find_first_even(numbers: &[i32]) -> Option<i32> {
    // Your code here...
    numbers.iter().find(|num| **num % 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
}

Retroz

Fungichi

6 days ago

4.32ms

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
}

batblerone

6 days ago

4.10ms

89.25kb

pub fn find_first_even(numbers: &[i32]) -> Option<i32> {
    // Your code here...
    numbers.iter().filter(|&even_num| even_num % 2 == 0).next().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
}

ffrie

6 days ago

5.59ms

89.25kb

pub fn find_first_even(numbers: &[i32]) -> Option<i32> {
    // Your code here...
    numbers.iter().filter(|&x| x % 2 == 0).next().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
}

Ramon Silva

rsilva1

7 days ago

4.77ms

89.25kb

pub fn find_first_even(numbers: &[i32]) -> Option<i32> {
    // Your code here...
    if let Some(idx) = numbers.iter().position(|num| *num % 2 == 0) {
        return Some(numbers[idx]);
    }
    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
}

vqk-2003

7 days ago

3.86ms

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
}

Sheren Yogesh Narayanan

Nsy97

8 days ago

4.03ms

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
}

Snoweuph

snoweuph

10 days ago

4.85ms

89.25kb

pub fn find_first_even(numbers: &[i32]) -> Option<i32> {
    for num in numbers.iter() {
        if num % 2 == 0 {
            return Some(*num);
        }
    }
    return None;
}

Amit Patel

amitpatel-wstf

11 days ago

3.85ms

89.23kb

pub fn find_first_even(numbers: &[i32]) -> Option<i32> {
    // Your code here...
    for i in numbers.iter() {
        if *i%2==0 {
            return Some(*i);
        }
    }
    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
}

Amit Patel

amitpatel-wstf

11 days ago

3.82ms

89.25kb

pub fn find_first_even(numbers: &[i32]) -> Option<i32> {
    // Your code here...
    for i in numbers.iter() {
        if *i%2==0 {
            return Some(*i);
        }
    }
    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
}

makinpaper

11 days ago

4.04ms

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
}

fasolyee

fasolyeedev

11 days ago

4.54ms

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
}

Dan Wayne

danwayne-me

11 days ago

4.39ms

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);
        }
    }
    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
}

Mubarak Muhammad Aminu

mubarak23

14 days ago

3.70ms

89.25kb

pub fn find_first_even(numbers: &[i32]) -> Option<i32> {
    // Your code here...
    for i in numbers.iter(){
        if i % 2 == 0 {
            return Some(*i)
        } 
    }
    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
}

Tanvi Sharma

wdcs-tanvisharma

14 days ago

5.11ms

89.23kb

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

gtakacse

15 days ago

4.54ms

89.25kb

pub fn find_first_even(numbers: &[i32]) -> Option<i32> {
    for item in numbers.iter() {
        if item % 2 == 0 {
            return Some(*item);
        }
    }
    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
}

SpontaneousOverthrow

15 days ago

8.50ms

89.23kb

pub fn find_first_even(numbers: &[i32]) -> Option<i32> {
    // Your code here...
    for i in numbers {
        if i%2 == 0 {
            return Some(*i)
        }
    }
    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
}

Alan Castro

acsoliz

17 days ago

3.99ms

89.25kb

pub fn find_first_even(numbers: &[i32]) -> Option<i32> {
    for &n in numbers.iter(){
        if is_pair(&n){
            return Some(n)
        }
    }
    None
}
fn is_pair(&num: &i32)->bool{
    &num % 2 == 0
}
// 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
}

cremno

17 days ago

6.46ms

89.23kb

pub fn find_first_even(numbers: &[i32]) -> Option<i32> {
    numbers.iter().find(|&e| e % 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
}

MöNir

Monir-Ruet

18 days ago

4.85ms

89.25kb

pub fn find_first_even(numbers: &[i32]) -> Option<i32> {
    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
}

Lambda

L4bda

18 days ago

4.36ms

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)
        }
    }
    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
}

Omar Saber Talaat Abdelrahman

omar-s-ta

19 days ago

5.12ms

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
}

<YoungAncient/>

youngancient

20 days ago

4.61ms

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);
        }
    }
    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
}

Karshik Madavi

c0d3c

21 days ago

4.10ms

89.23kb

pub fn find_first_even(numbers: &[i32]) -> Option<i32> {
    // Your code here...
    for &i in numbers.iter() {
        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
}

Dharm Singh

dharmvr1

22 days ago

3.85ms

89.25kb

pub fn find_first_even(numbers: &[i32]) -> Option<i32> {
    // Your code here...
   let ele = numbers.iter().find(|x| **x % 2 == 0).copied();
   ele
}
// 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
}

Tim Boex

tboex

22 days ago

4.64ms

89.23kb

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
}

RaccoonDX

23 days ago

5.95ms

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
}

RaccoonDX

23 days ago

3.98ms

89.25kb

pub fn find_first_even(numbers: &[i32]) -> Option<i32> {
    for a in numbers {
        if a % 2 == 0 {
            return Some(*a);
        }
    }
    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
}

Gerasimos

glomvardos

23 days ago

5.39ms

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
}

Mykhailo Huzhvii

Ymkavi

24 days ago

4.14ms

89.25kb

pub fn find_first_even(numbers: &[i32]) -> Option<i32> {
    numbers.iter().find(|&&num| num % 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
}

kasaxpong

25 days ago

3.64ms

89.25kb

pub fn find_first_even(numbers: &[i32]) -> Option<i32> {
   for i in numbers {
    if i % 2 == 0 {
        return Some (*i);
    } 
   } return None; // Your code here...
}
// 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
}

Dante Kelly

dantekelly

a month ago

4.19ms

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
}

yrd241

a month ago

4.54ms

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);
        }
    }
    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
}

matthew-snyder

a month ago

5.34ms

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
}

银雀Sparrxw

Sparr0www820

a month ago

4.18ms

89.23kb

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
}

hidethere

a month ago

5.54ms

89.25kb

pub fn find_first_even(numbers: &[i32]) -> Option<i32> {
    // Your code here...
    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
}

ychanghe

a month ago

3.88ms

89.25kb

pub fn find_first_even(numbers: &[i32]) -> Option<i32> {
    // Your code here...
    for i in numbers.iter(){
        if i%2==0{
            return Some(*i); 
        }
        else {
        }
    }
    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
}

cmdrtomalak

a month ago

3.95ms

89.23kb

pub fn find_first_even(numbers: &[i32]) -> Option<i32> {
    for num in numbers {
       if num % 2 == 0 {
            return Some(num.to_owned());
       } 
    }
    
    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
}

Bastien VINH

bastienvinh

a month ago

4.86ms

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
}

Ari Karim

arikarim

a month ago

4.46ms

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.clone())
        }
    }
    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
}

/sam

samging

a month ago

5.00ms

89.25kb

pub fn find_first_even(numbers: &[i32]) -> Option<i32> {
    // Your code here...
    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
}