Method isSubsetOf

src/07-set/set.ts:156–161

* Returns true if every element of this set is also in otherSet. * @param otherSet - The potential superset * @returns Whether this set is a subset of otherSet * @complexity Time O(n) | Space O(1)

(otherSet: MySet)

   * @complexity Time O(n) | Space O(1)
   */
  isSubsetOf(otherSet: MySet): boolean {
    if (this.size > otherSet.size) {
      return false;
    }
    return this.values().every(value => otherSet.has(value));
  }

  /**
   * Returns true if every element of otherSet is also in this set.