Method poll

src/data-structures/heap/MinHeapAdhoc.js:22–29

()

  }

  poll() {
    if (this.heap.length === 0) return undefined;
    const top = this.heap[0];
    this.heap[0] = this.heap[this.heap.length - 1];
    this.heap.pop();
    this.heapifyDown();
    return top;
  }

  isEmpty() {
    return this.heap.length === 0;