374. Guess Number Higher or Lower.ipynb

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    "We are playing the Guess Game. The game is as follows:\n",
    "\n",
    "I pick a number from 1 to n. You have to guess which number I picked.\n",
    "\n",
    "Every time you guess wrong, I'll tell you whether the number is higher or lower.\n",
    "\n",
    "You call a pre-defined API guess(int num) which returns 3 possible results (-1, 1, or 0):\n",
    "\n",
    "-1 : My number is lower\n",
    " 1 : My number is higher\n",
    " 0 : Congrats! You got it!\n",
    "Example:\n",
    "n = 10, I pick 6.\n",
    "\n",
    "Return 6."
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    "# The guess API is already defined for you.\n",
    "# @param num, your guess\n",
    "# @return -1 if my number is lower, 1 if my number is higher, otherwise return 0\n",
    "# def guess(num):\n",
    "\n",
    "class Solution(object):\n",
    "    def guessNumber(self, n):\n",
    "        \"\"\"\n",
    "        :type n: int\n",
    "        :rtype: int\n",
    "        \"\"\"\n",
    "        if n==1:\n",
    "            return 1\n",
    "        lo=1\n",
    "        hi=n\n",
    "        while lo < hi:\n",
    "            mid=lo+(hi-lo)//2\n",
    "            ref=guess(mid)\n",
    "            if ref<0:\n",
    "                hi=mid-1\n",
    "            elif ref>0:\n",
    "                lo=mid+1\n",
    "            else:\n",
    "                return mid\n",
    "        \n",
    "        return lo\n",
    "        \n",
    "                "
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    "\n",
    "def guess(num):\n",
    "    global x\n",
    "    x=6\n",
    "    if x<num:\n",
    "        return -1\n",
    "    elif x==num:\n",
    "        return 0\n",
    "    else:\n",
    "        return 1"
   ]
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   "source": [
    "guess(3)"
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    "s=Solution()"
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    "s.guessNumber(1)"
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