Check if there is a duplicate product between 3 arrays using hash

Question

I have a list pf products whose data has been split into 3 arrays that holds the name, price, and weight of the product. How do I make a function that finds the duplicate product using hash map?

//Inputs:
name = ["ball", "bat", "glove", "glove", "glove"]
price = [2, 3, 1, 2, 1]
weight = [2, 5, 1, 1, 1]
//Output: true

//Inputs: 
name = ["ball", "bat", "glove", "glove", "glove"]
price = [2, 3, 1, 2, 2]
weight = [2, 5, 1, 1, 2]
//Output: false

Answer 1

I would firstly challenge the need to split the data into three arrays, then ultimately approach the problem this way if the data structure couldn't be reshaped.

const findDupes = (
  [name, ...names], 
  [price, ...prices], 
  [weight, ...weights], 
  res = {},
) => {
  const next = ($res) => findDupes(names, prices, weights, $res);
  const hash = `${name}\/${price}\/${weight}`;
  
  const dupe = res[hash] ? { name, price, weight } : [];
  
  return [].concat(dupe).concat(
    names.length ? next({ ...res, [hash]: true }) : [],
  );
};

const name = ["ball", "bat", "glove", "glove", "glove"];
const price = [2, 3, 1, 2, 1];
const weight = [2, 5, 1, 1, 1];

console.log(
  findDupes(name, price, weight),
);