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About F#

F# is a functional-first programming language that makes it easy to write correct and maintainable code.

About Rust

Rust is a multi-paradigm programming language focused on performance and safety, especially safe concurrency.

Palindrome Check Example: F# vs Rust

Palindrome Check in F#

open System

let isPalindrome (str: string) =
    let clean = String.Join("", str.ToLower().ToCharArray()
                |> Array.filter Char.IsLetterOrDigit)
    clean = String(clean.ToCharArray() |> Array.rev)

# Example usage
printfn "%b" (isPalindrome "A man, a plan, a canal: Panama") // true
printfn "%b" (isPalindrome "race a car") // false

Palindrome Check in Rust

fn is_palindrome(s: &str) -> bool {
    let clean: String = s.chars()
        .filter(|c| c.is_alphanumeric())
        .map(|c| c.to_ascii_lowercase())
        .collect();
    
    clean.chars().eq(clean.chars().rev())
}

fn main() {
    println!("{}", is_palindrome("A man, a plan, a canal: Panama")); // true
    println!("{}", is_palindrome("race a car")); // false
}

Bubble Sort Example: F# vs Rust

Bubble Sort in F#

let bubbleSort (arr: int array) =
    let n = Array.length arr
    for i in 0 .. n - 1 do
        for j in 0 .. n - i - 2 do
            if arr.[j] > arr.[j + 1] then
                let temp = arr.[j]
                arr.[j] <- arr.[j + 1]
                arr.[j + 1] <- temp
    arr

let arr = [|64; 34; 25; 12; 22; 11; 90|]
bubbleSort arr |> Array.iter (printf "%d ")

Bubble Sort in Rust

fn bubble_sort(arr: &mut [i32]) {
    let n = arr.len();
    for i in 0..n {
        for j in 0..n - i - 1 {
            if arr[j] > arr[j + 1] {
                arr.swap(j, j + 1);
            }
        }
    }
}

fn main() {
    let mut arr = vec![64, 34, 25, 12, 22, 11, 90];
    bubble_sort(&mut arr);
    println!("{:?}", arr);
}