lab-node-intro-solution-index.js

// new SortedList should create a new object from the SortedList class
// The object should have a items and length property
// items should be an array
// length should be the number of elements in the array

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

  // add(x) will add x to the items array
  add(item){
    this.items.push(item);
    this.items.sort((a, b) => {
      return a - b;
    });
    this.length ++;
  }

  // The method will get the nth value in the list
  // You should also provide a length property that gives the length of the list.
  get(pos){
    if (pos > this.length){
      throw new Error("OutOfBounds");
    }
    return this.items[pos];
  }

  // Should return the max value of the array
  max(){
    if (this.length === 0){
        throw new Error("EmptySortedList");
    }
    return Math.max(...this.items);
  }

  // Should return the lowest value of the array
  min(){
    if (this.length === 0) {
      throw new Error("EmptySortedList");
    }
    return Math.min(...this.items);
  }

  // Should return the sum value of the array
  sum(){
    if (this.length === 0) {
      return 0;
    }
    return this.items.reduce((sum, i) => {
        return sum + i;
    });
  }

  // Should return the average value of the array
  avg(){
    if (this.length === 0) {
      throw new Error("EmptySortedList");
    }
    return (this.sum()/this.length);
  }
}

module.exports = SortedList;