202. Happy Number.ipynb

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      "False\n"
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   "source": [
    "x = 18\n",
    "def isHappy(a):\n",
    "    temp = set()\n",
    "    while a != 1:\n",
    "        if a in temp: return False\n",
    "        temp.add(a)\n",
    "        a = sum([int(x)**2 for x in str(a)])\n",
    "    else:\n",
    "        return True\n",
    "            \n",
    "print(isHappy(x))"
   ]
  }
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