Rust Function: Analyzing Boolean vector

Last update on December 21 2024 10:22:33 (UTC/GMT +8 hours)

Write a Rust function that takes a vector of booleans and returns "All true!" if all elements are true, "All false!" if all elements are false, and "Mixed!" otherwise.

Sample Solution:

Rust Code:

// Function that takes a vector of booleans and returns a message based on the elements.
fn check_bools(vector: Vec<bool>) -> &'static str {
    // Check if the vector is empty
    if vector.is_empty() {
        // If empty, return "Empty vector!"
        return "Empty vector!";
    }

    // Check if all elements are true
    let all_true = vector.iter().all(|&x| x);
    // Check if all elements are false
    let all_false = vector.iter().all(|&x| !x);

    // If all elements are true, return "All true!"
    if all_true {
        "All true!"
    // If all elements are false, return "All false!"
    } else if all_false {
        "All false!"
    // Otherwise, return "Mixed!"
    } else {
        "Mixed!"
    }
}

fn main() {
    // Example usage
    let all_true = vec![true, true, true, true];
    let all_false = vec![false, false, false, false];
    let mixed = vec![true, false, true, true];

    // Print the result for each vector
    println!("{}", check_bools(all_true)); // Output: All true!
    println!("{}", check_bools(all_false)); // Output: All false!
    println!("{}", check_bools(mixed)); // Output: Mixed!
}

Output:

All true!
All false!
Mixed!

Explanation:

The above Rust code defines a function "check_bools()" that takes a vector of booleans and returns a message based on the elements. The function checks if all elements are true, all elements are false, or if there's a mix of true and false values. In the "main()" function, example vectors are provided and the result is printed for each vector.

Rust Code Editor:

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