leetcode-problemset/leetcode-cn/originData/minimum-number-of-removals-to-make-mountain-array.json

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            "title": "Minimum Number of Removals to Make Mountain Array",
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            "content": "<p>You may recall that an array <code>arr</code> is a <strong>mountain array</strong> if and only if:</p>\n\n<ul>\n\t<li><code>arr.length &gt;= 3</code></li>\n\t<li>There exists some index <code>i</code> (<strong>0-indexed</strong>) with <code>0 &lt; i &lt; arr.length - 1</code> such that:\n\t<ul>\n\t\t<li><code>arr[0] &lt; arr[1] &lt; ... &lt; arr[i - 1] &lt; arr[i]</code></li>\n\t\t<li><code>arr[i] &gt; arr[i + 1] &gt; ... &gt; arr[arr.length - 1]</code></li>\n\t</ul>\n\t</li>\n</ul>\n\n<p>Given an integer array <code>nums</code>, return <em>the <strong>minimum</strong> number of elements to remove to make </em><code>nums<em></em></code><em> </em><em>a <strong>mountain array</strong>.</em></p>\n\n<p>&nbsp;</p>\n<p><strong class=\"example\">Example 1:</strong></p>\n\n<pre>\n<strong>Input:</strong> nums = [1,3,1]\n<strong>Output:</strong> 0\n<strong>Explanation:</strong> The array itself is a mountain array so we do not need to remove any elements.\n</pre>\n\n<p><strong class=\"example\">Example 2:</strong></p>\n\n<pre>\n<strong>Input:</strong> nums = [2,1,1,5,6,2,3,1]\n<strong>Output:</strong> 3\n<strong>Explanation:</strong> One solution is to remove the elements at indices 0, 1, and 5, making the array nums = [1,5,6,3,1].\n</pre>\n\n<p>&nbsp;</p>\n<p><strong>Constraints:</strong></p>\n\n<ul>\n\t<li><code>3 &lt;= nums.length &lt;= 1000</code></li>\n\t<li><code>1 &lt;= nums[i] &lt;= 10<sup>9</sup></code></li>\n\t<li>It is guaranteed that you can make a mountain array out of <code>nums</code>.</li>\n</ul>\n",
            "translatedTitle": "得到山形数组的最少删除次数",
            "translatedContent": "<p>我们定义&nbsp;<code>arr</code>&nbsp;是 <b>山形数组</b>&nbsp;当且仅当它满足：</p>\n\n<ul>\n\t<li><code>arr.length &gt;= 3</code></li>\n\t<li>存在某个下标&nbsp;<code>i</code>&nbsp;（<strong>从 0 开始</strong>）&nbsp;满足&nbsp;<code>0 &lt; i &lt; arr.length - 1</code>&nbsp;且：\n\t<ul>\n\t\t<li><code>arr[0] &lt; arr[1] &lt; ... &lt; arr[i - 1] &lt; arr[i]</code></li>\n\t\t<li><code>arr[i] &gt; arr[i + 1] &gt; ... &gt; arr[arr.length - 1]</code></li>\n\t</ul>\n\t</li>\n</ul>\n\n<p>给你整数数组&nbsp;<code>nums</code> ，请你返回将 <code>nums</code>&nbsp;变成 <strong>山形状数组</strong>&nbsp;的 <strong>最少</strong>&nbsp;删除次数。</p>\n\n<p>&nbsp;</p>\n\n<p><strong>示例 1：</strong></p>\n\n<pre>\n<b>输入：</b>nums = [1,3,1]\n<b>输出：</b>0\n<b>解释：</b>数组本身就是山形数组，所以我们不需要删除任何元素。\n</pre>\n\n<p><strong>示例 2：</strong></p>\n\n<pre>\n<b>输入：</b>nums = [2,1,1,5,6,2,3,1]\n<b>输出：</b>3\n<b>解释：</b>一种方法是将下标为 0，1 和 5 的元素删除，剩余元素为 [1,5,6,3,1] ，是山形数组。\n</pre>\n\n<p>&nbsp;</p>\n\n<p><strong>提示：</strong></p>\n\n<ul>\n\t<li><code>3 &lt;= nums.length &lt;= 1000</code></li>\n\t<li><code>1 &lt;= nums[i] &lt;= 10<sup>9</sup></code></li>\n\t<li>题目保证&nbsp;<code>nums</code> 删除一些元素后一定能得到山形数组。</li>\n</ul>\n",
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