lab-intro-node-solution.js

class SortedList {
  constructor() {
    this.items = [];
    this.length = 0;
  }

  add(item) {
    this.items.push(item);
    this.items.sort((a, b) => a - b);
    this.length = this.items.length;
  }

  get(pos) {
    if (pos > this.length - 1) {
      throw new Error('OutOfBounds');
    } else {
      return this.items[pos];
    }
  }

  max() {
    if (this.length) {
      // this.items = [ 1, 2, 3 ];
      // return Math.max(1, 2, 3);
      return Math.max(...this.items);
    } else {
      throw new Error('EmptySortedList');
    }
  }

  min() {
    if (this.length) {
      return Math.min(...this.items);
    } else {
      throw new Error('EmptySortedList');
    }
  }

  sum() {
    return this.items.reduce((acc, value) => acc + value, 0);
  }

  avg() {
    if (this.length) {
      return this.sum() / this.length;
    } else {
      throw new Error('EmptySortedList');
    }
  }
}

module.exports = SortedList;