Function permutator::get_cartesian_for

pub fn get_cartesian_for<T>(
    objects: &[T], 
    degree: usize, 
    i: usize
) -> Result<Vec<&T>, &str>

Get a cartesian product at specific location. If objects is [1, 2, 3] and degree is 2 then all possible result is [1, 1], [1, 2], [1, 3], [2, 1], [2, 2], [2, 3], [3, 1], [3, 2], [3, 3]

Parameters

• objects is a slice of an object.
• degree is a degree of cartesian size.
• i is a specific location to get a combination.

Examples

use permutator::get_cartesian_for;
 
let nums = [1, 2, 3];
get_cartesian_for(&nums, 2, 0); // Return Ok([1, 1])
get_cartesian_for(&nums, 2, 3); // Return Ok([2, 1])
get_cartesian_for(&nums, 2, 8); // Return Ok([3, 3])
get_cartesian_for(&nums, 2, 9); // Return Err("Parameter `i` is out of bound")
get_cartesian_for(&nums, 4, 0); // Return Err("Parameter `degree` cannot be larger than size of objects")