test-original.js

// Task: Implement a 'Range Collection' class.
// A pair of integers define a range, for example: [1, 5). This range includes integers: 1, 2, 3, and 4.
// A range collection is an aggregate of these ranges: [1, 5), [10, 11), [100, 201)

/**
 * RangeCollection class
 * NOTE: Feel free to add any extra member variables/functions you like.
 */
class RangeCollection {
    /**
     * Adds a range to the collection
     * @param {Array<number>} range - Array of two integers that specify beginning and end of range.
     */
    add(range) {
      // TODO: implement this
    }
  
    /**
     * Removes a range from the collection
     * @param {Array<number>} range - Array of two integers that specify beginning and end of range.
     */
    remove(range) {
      // TODO: implement this
    }
  
    /**
     * Prints out the list of ranges in the range collection
     */
    print() {
      // TODO: implement this
    }
  }
  
  // Example run
  const rc = new RangeCollection();
  
  rc.add([1, 5]);
  rc.print();
  // Should display: [1, 5)
  
  rc.add([10, 20]);
  rc.print();
  // Should display: [1, 5) [10, 20)
  
  rc.add([20, 20]);
  rc.print();
  // Should display: [1, 5) [10, 20)
  
  rc.add([20, 21]);
  rc.print();
  // Should display: [1, 5) [10, 21)
  
  rc.add([2, 4]);
  rc.print();
  // Should display: [1, 5) [10, 21)
  
  rc.add([3, 8]);
  rc.print();
  // Should display: [1, 8) [10, 21)
  
  rc.remove([10, 10]);
  rc.print();
  // Should display: [1, 8) [10, 21)
  
  rc.remove([10, 11]);
  rc.print();
  // Should display: [1, 8) [11, 21)
  
  rc.remove([15, 17]);
  rc.print();
  // Should display: [1, 8) [11, 15) [17, 21)
  
  rc.remove([3, 19]);
  rc.print();
  // Should display: [1, 3) [19, 21)