built-in heapq

heapq-python.ipynb

{
 "cells": [
  {
   "cell_type": "code",
   "execution_count": 1,
   "metadata": {},
   "outputs": [],
   "source": [
    "from heapq import heappop, heappush, heapify\n",
    "\n",
    "heap = []\n",
    "nums = [12, 3, -5, 3, 6, 11]"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 2,
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/plain": [
       "[-5, 3, 3, 12, 6, 11]"
      ]
     },
     "execution_count": 2,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "for n in nums:\n",
    "    heappush(heap, n)\n",
    "    \n",
    "heapify(heap)\n",
    "\n",
    "heap"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 3,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "-5\n",
      "3\n",
      "3\n",
      "6\n",
      "11\n",
      "12\n"
     ]
    }
   ],
   "source": [
    "while heap:\n",
    "    print(heappop(heap))"
   ]
  }
 ],
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