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            "title": "Array Nesting",
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            "content": "<p>You are given an integer array <code>nums</code> of length <code>n</code> where <code>nums</code> is a permutation of the numbers in the range <code>[0, n - 1]</code>.</p>\n\n<p>You should build a set <code>s[k] = {nums[k], nums[nums[k]], nums[nums[nums[k]]], ... }</code> subjected to the following rule:</p>\n\n<ul>\n\t<li>The first element in <code>s[k]</code> starts with the selection of the element <code>nums[k]</code> of <code>index = k</code>.</li>\n\t<li>The next element in <code>s[k]</code> should be <code>nums[nums[k]]</code>, and then <code>nums[nums[nums[k]]]</code>, and so on.</li>\n\t<li>We stop adding right before a duplicate element occurs in <code>s[k]</code>.</li>\n</ul>\n\n<p>Return <em>the longest length of a set</em> <code>s[k]</code>.</p>\n\n<p>&nbsp;</p>\n<p><strong>Example 1:</strong></p>\n\n<pre>\n<strong>Input:</strong> nums = [5,4,0,3,1,6,2]\n<strong>Output:</strong> 4\n<strong>Explanation:</strong> \nnums[0] = 5, nums[1] = 4, nums[2] = 0, nums[3] = 3, nums[4] = 1, nums[5] = 6, nums[6] = 2.\nOne of the longest sets s[k]:\ns[0] = {nums[0], nums[5], nums[6], nums[2]} = {5, 6, 2, 0}\n</pre>\n\n<p><strong>Example 2:</strong></p>\n\n<pre>\n<strong>Input:</strong> nums = [0,1,2]\n<strong>Output:</strong> 1\n</pre>\n\n<p>&nbsp;</p>\n<p><strong>Constraints:</strong></p>\n\n<ul>\n\t<li><code>1 &lt;= nums.length &lt;= 10<sup>5</sup></code></li>\n\t<li><code>0 &lt;= nums[i] &lt; nums.length</code></li>\n\t<li>All the values of <code>nums</code> are <strong>unique</strong>.</li>\n</ul>\n",
            "translatedTitle": "数组嵌套",
            "translatedContent": "<p>索引从<code>0</code>开始长度为<code>N</code>的数组<code>A</code>，包含<code>0</code>到<code>N - 1</code>的所有整数。找到最大的集合<code>S</code>并返回其大小，其中 <code>S[i] = {A[i], A[A[i]], A[A[A[i]]], ... }</code>且遵守以下的规则。</p>\n\n<p>假设选择索引为<code>i</code>的元素<code>A[i]</code>为<code>S</code>的第一个元素，<code>S</code>的下一个元素应该是<code>A[A[i]]</code>，之后是<code>A[A[A[i]]]...</code> 以此类推，不断添加直到<code>S</code>出现重复的元素。</p>\n\n<p>&nbsp;</p>\n\n<p><strong>示例&nbsp;1:</strong></p>\n\n<pre><strong>输入:</strong> A = [5,4,0,3,1,6,2]\n<strong>输出:</strong> 4\n<strong>解释:</strong> \nA[0] = 5, A[1] = 4, A[2] = 0, A[3] = 3, A[4] = 1, A[5] = 6, A[6] = 2.\n\n其中一种最长的 S[K]:\nS[0] = {A[0], A[5], A[6], A[2]} = {5, 6, 2, 0}\n</pre>\n\n<p>&nbsp;</p>\n\n<p><strong>提示：</strong></p>\n\n<ol>\n\t<li><code>N</code>是<code>[1, 20,000]</code>之间的整数。</li>\n\t<li><code>A</code>中不含有重复的元素。</li>\n\t<li><code>A</code>中的元素大小在<code>[0, N-1]</code>之间。</li>\n</ol>\n",
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