67. 二进制求和.ipynb

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     "data": {
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       "'110001'"
      ]
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    "class Solution:\n",
    "    def addBinary(self, a: str, b: str) -> str:\n",
    "        flag = False\n",
    "        res = ''\n",
    "        if len(a) < len(b):\n",
    "            temp = a\n",
    "            a = b\n",
    "            b = temp\n",
    "        gap = len(a) - len(b)\n",
    "        for i in range(len(b)-1,-1,-1):\n",
    "            if a[i+gap] == '0' and a[i+gap] == b[i]:\n",
    "                if flag:\n",
    "                    res += '1'\n",
    "                    flag = False\n",
    "                else:\n",
    "                    res += '0'\n",
    "            elif a[i+gap] != b[i]:\n",
    "                if flag:\n",
    "                    res += '0'\n",
    "                else:\n",
    "                    res += '1'\n",
    "            else:\n",
    "                if flag:\n",
    "                    res += '1'\n",
    "                else:\n",
    "                    res += '0'\n",
    "                flag = True\n",
    "        for i in range(len(a)-len(b)-1,-1,-1):\n",
    "            if flag and a[i] == '1':\n",
    "                res += '0'\n",
    "            elif flag and a[i] == '0':\n",
    "                res += '1'\n",
    "                flag = False\n",
    "            else:\n",
    "                res += a[i]\n",
    "        if flag:\n",
    "            res += '1'\n",
    "        return res[::-1]\n",
    "s = Solution()\n",
    "s.addBinary(\"101111\",\"10\")"
   ]
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