leetcode-problemset/leetcode-cn/originData/shu-zu-zhong-shu-zi-chu-xian-de-ci-shu-ii-lcof.json

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            "questionId": "100321",
            "questionFrontendId": "剑指 Offer 56 - II",
            "categoryTitle": "LCOF",
            "boundTopicId": 87605,
            "title": "数组中数字出现的次数 II LCOF",
            "titleSlug": "shu-zu-zhong-shu-zi-chu-xian-de-ci-shu-ii-lcof",
            "content": "<p>English description is not available for the problem. Please switch to Chinese.</p>\r\n",
            "translatedTitle": "数组中数字出现的次数 II",
            "translatedContent": "<p>在一个数组 <code>nums</code> 中除一个数字只出现一次之外，其他数字都出现了三次。请找出那个只出现一次的数字。</p>\n\n<p>&nbsp;</p>\n\n<p><strong>示例 1：</strong></p>\n\n<pre><strong>输入：</strong>nums = [3,4,3,3]\n<strong>输出：</strong>4\n</pre>\n\n<p><strong>示例 2：</strong></p>\n\n<pre><strong>输入：</strong>nums = [9,1,7,9,7,9,7]\n<strong>输出：</strong>1</pre>\n\n<p>&nbsp;</p>\n\n<p><strong>限制：</strong></p>\n\n<ul>\n\t<li><code>1 &lt;= nums.length &lt;= 10000</code></li>\n\t<li><code>1 &lt;= nums[i] &lt; 2^31</code></li>\n</ul>\n\n<p>&nbsp;</p>\n",
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