Core Engineering Technical Screen

README.md

Core Engineering Technical Screen

Objective

Imagine you work in Smarter Technology’s robotic automation factory, and your objective is to write a function for one of its robotic arms that will dispatch the packages to the correct stack according to their volume and mass.

Rules

Sort the packages using the following criteria:

• A package is bulky if its volume (Width x Height x Length) is greater than or equal to 1,000,000 cm³ or when one of its dimensions is greater or equal to 150 cm.
• A package is heavy when its mass is greater or equal to 20 kg.

You must dispatch the packages in the following stacks:

• STANDARD: standard packages (those that are not bulky or heavy) can be handled normally.
• SPECIAL: packages that are either heavy or bulky can't be handled automatically.
• REJECTED: packages that are both heavy and bulky are rejected.

Implementation

Implement the function sort(width, height, length, mass) (units are centimeters for the dimensions and kilogram for the mass). This function must return a string: the name of the stack where the package should go.

Submission Guidance

1. Time Management: Allocate no more than 30 minutes to complete this challenge.
2. Programming Language: You may use any programming language you're comfortable with. This is an opportunity to showcase your skills in a language you are proficient in.
3. Submission Format:
   • Option 1: Submit a public GitHub repository with clear README instructions.
   • Option 2 (Preferred): Host your solution on an online IDE like Repl.it or CodePen for immediate code review. Ensure the link is accessible for direct execution.
4. Evaluation Criteria: Submissions will be assessed on:
   • Correct sorting logic.
   • Code quality.
   • Handling edge cases and inputs.
   • Test coverage.

sort.js

function sort(width, height, length, mass) {
  const args = [width, height, length, mass];

  const badNumber = args.some((d) => d <= 0);
  const nonNumber = !args.every((q) => Number.isFinite(parseFloat(`${q}`)));

  if (badNumber || nonNumber) {
    return "REJECTED";
  }

  const isBulky = width * height * length >= 1_000_000 || args.slice(0, 3).some((d) => d >= 150);
  const isHeavy = mass > 20;

  if (isHeavy && isBulky) {
    return "REJECTED";
  }

  if (isHeavy || isBulky) {
    return "SPECIAL";
  }

  return "STANDARD";
}