leetcode-problemset/leetcode-cn/originData/erect-the-fence.json

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            "title": "Erect the Fence",
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            "content": "<p>You are given an array <code>trees</code> where <code>trees[i] = [x<sub>i</sub>, y<sub>i</sub>]</code> represents the location of a tree in the garden.</p>\n\n<p>You are asked to fence the entire garden using the minimum length of rope as it is expensive. The garden is well fenced only if <strong>all the trees are enclosed</strong>.</p>\n\n<p>Return <em>the coordinates of trees that are exactly located on the fence perimeter</em>.</p>\n\n<p>&nbsp;</p>\n<p><strong>Example 1:</strong></p>\n<img alt=\"\" src=\"https://assets.leetcode.com/uploads/2021/04/24/erect2-plane.jpg\" style=\"width: 509px; height: 500px;\" />\n<pre>\n<strong>Input:</strong> points = [[1,1],[2,2],[2,0],[2,4],[3,3],[4,2]]\n<strong>Output:</strong> [[1,1],[2,0],[3,3],[2,4],[4,2]]\n</pre>\n\n<p><strong>Example 2:</strong></p>\n<img alt=\"\" src=\"https://assets.leetcode.com/uploads/2021/04/24/erect1-plane.jpg\" style=\"width: 509px; height: 500px;\" />\n<pre>\n<strong>Input:</strong> points = [[1,2],[2,2],[4,2]]\n<strong>Output:</strong> [[4,2],[2,2],[1,2]]\n</pre>\n\n<p>&nbsp;</p>\n<p><strong>Constraints:</strong></p>\n\n<ul>\n\t<li><code>1 &lt;= points.length &lt;= 3000</code></li>\n\t<li><code>points[i].length == 2</code></li>\n\t<li><code>0 &lt;= x<sub>i</sub>, y<sub>i</sub> &lt;= 100</code></li>\n\t<li>All the given points are <strong>unique</strong>.</li>\n</ul>\n",
            "translatedTitle": "安装栅栏",
            "translatedContent": "<p>在一个二维的花园中，有一些用 (x, y) 坐标表示的树。由于安装费用十分昂贵，你的任务是先用<strong>最短</strong>的绳子围起所有的树。只有当所有的树都被绳子包围时，花园才能围好栅栏。你需要找到正好位于栅栏边界上的树的坐标。</p>\r\n\r\n<p>&nbsp;</p>\r\n\r\n<p><strong>示例 1:</strong></p>\r\n\r\n<pre><strong>输入:</strong> [[1,1],[2,2],[2,0],[2,4],[3,3],[4,2]]\r\n<strong>输出:</strong> [[1,1],[2,0],[4,2],[3,3],[2,4]]\r\n<strong>解释:</strong>\r\n<img src=\"https://assets.leetcode-cn.com/aliyun-lc-upload/uploads/2018/10/12/erect_the_fence_1.png\" style=\"width: 100%; max-width: 320px\">\r\n</pre>\r\n\r\n<p><strong>示例 2:</strong></p>\r\n\r\n<pre><strong>输入:</strong> [[1,2],[2,2],[4,2]]\r\n<strong>输出:</strong> [[1,2],[2,2],[4,2]]\r\n<strong>解释:</strong>\r\n<img src=\"https://assets.leetcode-cn.com/aliyun-lc-upload/uploads/2018/10/12/erect_the_fence_2.png\" style=\"width: 100%; max-width: 320px\">\r\n即使树都在一条直线上，你也需要先用绳子包围它们。\r\n</pre>\r\n\r\n<p>&nbsp;</p>\r\n\r\n<p><strong>注意:</strong></p>\r\n\r\n<ol>\r\n\t<li>所有的树应当被围在一起。你不能剪断绳子来包围树或者把树分成一组以上。</li>\r\n\t<li>输入的整数在 0 到 100 之间。</li>\r\n\t<li>花园至少有一棵树。</li>\r\n\t<li>所有树的坐标都是不同的。</li>\r\n\t<li>输入的点<strong>没有</strong>顺序。输出顺序也没有要求。</li>\r\n</ol>",
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