Solution: lb_recursive

Here is the commented solution for this project.

Create the script

Create a file named lb_recursive.js.

$ touch lb_recursive.js

Write the logic in pseudo-code

The objective of this part is to write the logic of the recursive function in pseudo-code before implementing it.

Write the main logic of the recursive function.

function recursiveGenerator(number, target, expression = '', result = 0) {  /*    1. Extract the first `digit` from the `number` parameter    2. Remove the first digit from the `number` parameter    3. If it is the first execution of the function      3.1. Execute the function recursively with the `number`, `target`, `expression + digit`, `result` parameters    4. Otherwise      4.1. Execute the function recursively with the `number`, `target`, `expression + digit`, `result + digit` parameters      4.2. Execute the function recursively with the `number`, `target`, `expression - digit`, `result - digit` parameters      4.3. Execute the function recursively with the `number`, `target`, `expression * digit`, `result * digit` parameters  */