Method hasLeftChild

src/data-structures/heap/Heap.js:57–59

* @param {number} parentIndex * @return {boolean}

(parentIndex)

   * @return {boolean}
   */
  hasLeftChild(parentIndex) {
    return this.getLeftChildIndex(parentIndex) < this.heapContainer.length;
  }

  /**
   * @param {number} parentIndex