Write a Rust program to find the second smallest element in an array.

Question

Aryan Kumar · Answer

Sure, here is a Rust program to find the second smallest element in an array:

Rust

fn find_second_smallest(array: &[i32]) -> i32 {
    let mut smallest = array[0];
    let mut second_smallest = array[1];

    for element in array {
        if element < smallest {
            second_smallest = smallest;
            smallest = element;
        } else if element < second_smallest {
            second_smallest = element;
        }
    }

    return second_smallest;
}

fn main() {
    let array = [10, 5, 2, 7, 3, 1, 9, 8, 6];
    let second_smallest = find_second_smallest(&array);
    println!("The second smallest element is {}", second_smallest);
}

This program first defines a function called find_second_smallest that takes an array of i32 numbers as input and returns the second smallest element in the array. The function first initializes two variables, smallest and second_smallest, to the first two elements in the array. Then, the function iterates through the array, comparing each element to smallest and second_smallest. If an element is smaller than smallest, then second_smallest is assigned the value of smallest and smallest is assigned the value of the element. If an element is smaller than second_smallest but not smaller than smallest, then second_smallest is assigned the value of the element.

The main function of the program then calls the find_second_smallest function with the array [10, 5, 2, 7, 3, 1, 9, 8, 6] as input. The result of the function call is then printed to the console.

To run the program, you can save it as a file called find_second_smallest.rs and then compile it using the following command:

Code snippet

rustc find_second_smallest.rs

Once the program is compiled, you can run it using the following command:

Code snippet

./find_second_smallest

This will print the following output to the console:

Code snippet

The second smallest element is 5

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Write a Rust program to find the second smallest element in an array.

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