dist-javascript-algorithms-and-data-structures/dist/algorithms/sets/knapsack-problem/KnapsackItem.js

Algorithms and data-structures implemented on JavaScript

"use strict";

Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.default = void 0;

class KnapsackItem {
  /**
   * @param {Object} itemSettings - knapsack item settings,
   * @param {number} itemSettings.value - value of the item.
   * @param {number} itemSettings.weight - weight of the item.
   * @param {number} itemSettings.itemsInStock - how many items are available to be added.
   */
  constructor({
    value,
    weight,
    itemsInStock = 1
  }) {
    this.value = value;
    this.weight = weight;
    this.itemsInStock = itemsInStock; // Actual number of items that is going to be added to knapsack.

    this.quantity = 1;
  }

  get totalValue() {
    return this.value * this.quantity;
  }

  get totalWeight() {
    return this.weight * this.quantity;
  } // This coefficient shows how valuable the 1 unit of weight is
  // for current item.


  get valuePerWeightRatio() {
    return this.value / this.weight;
  }

  toString() {
    return `v${this.value} w${this.weight} x ${this.quantity}`;
  }

}

exports.default = KnapsackItem;