leetcode-problemset/leetcode-cn/originData/longest-harmonious-subsequence.json

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            "title": "Longest Harmonious Subsequence",
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            "content": "<p>We define a harmonious array as an array where the difference between its maximum value and its minimum value is <b>exactly</b> <code>1</code>.</p>\n\n<p>Given an integer array <code>nums</code>, return the length of its longest harmonious <span data-keyword=\"subsequence-array\">subsequence</span> among all its possible subsequences.</p>\n\n<p>&nbsp;</p>\n<p><strong class=\"example\">Example 1:</strong></p>\n\n<div class=\"example-block\">\n<p><strong>Input:</strong> <span class=\"example-io\">nums = [1,3,2,2,5,2,3,7]</span></p>\n\n<p><strong>Output:</strong> <span class=\"example-io\">5</span></p>\n\n<p><strong>Explanation:</strong></p>\n\n<p>The longest harmonious subsequence is <code>[3,2,2,2,3]</code>.</p>\n</div>\n\n<p><strong class=\"example\">Example 2:</strong></p>\n\n<div class=\"example-block\">\n<p><strong>Input:</strong> <span class=\"example-io\">nums = [1,2,3,4]</span></p>\n\n<p><strong>Output:</strong> <span class=\"example-io\">2</span></p>\n\n<p><strong>Explanation:</strong></p>\n\n<p>The longest harmonious subsequences are <code>[1,2]</code>, <code>[2,3]</code>, and <code>[3,4]</code>, all of which have a length of 2.</p>\n</div>\n\n<p><strong class=\"example\">Example 3:</strong></p>\n\n<div class=\"example-block\">\n<p><strong>Input:</strong> <span class=\"example-io\">nums = [1,1,1,1]</span></p>\n\n<p><strong>Output:</strong> <span class=\"example-io\">0</span></p>\n\n<p><strong>Explanation:</strong></p>\n\n<p>No harmonic subsequence exists.</p>\n</div>\n\n<p>&nbsp;</p>\n<p><strong>Constraints:</strong></p>\n\n<ul>\n\t<li><code>1 &lt;= nums.length &lt;= 2 * 10<sup>4</sup></code></li>\n\t<li><code>-10<sup>9</sup> &lt;= nums[i] &lt;= 10<sup>9</sup></code></li>\n</ul>\n",
            "translatedTitle": "最长和谐子序列",
            "translatedContent": "<p>和谐数组是指一个数组里元素的最大值和最小值之间的差别 <strong>正好是 <code>1</code></strong> 。</p>\n\n<p>给你一个整数数组 <code>nums</code> ，请你在所有可能的 <span data-keyword=\"subsequence-array\">子序列</span> 中找到最长的和谐子序列的长度。</p>\n\n<p>数组的 <strong>子序列</strong> 是一个由数组派生出来的序列，它可以通过删除一些元素或不删除元素、且不改变其余元素的顺序而得到。</p>\n\n<p>&nbsp;</p>\n\n<p><strong class=\"example\">示例 1：</strong></p>\n\n<div class=\"example-block\">\n<p><strong>输入：</strong><span class=\"example-io\">nums = [1,3,2,2,5,2,3,7]</span></p>\n\n<p><span class=\"example-io\"><b>输出：</b>5</span></p>\n\n<p><strong>解释：</strong></p>\n\n<p>最长和谐子序列是&nbsp;<code>[3,2,2,2,3]</code>。</p>\n</div>\n\n<p><strong class=\"example\">示例 2：</strong></p>\n\n<div class=\"example-block\">\n<p><span class=\"example-io\"><b>输入：</b>nums = [1,2,3,4]</span></p>\n\n<p><span class=\"example-io\"><b>输出：</b>2</span></p>\n\n<p><strong>解释：</strong></p>\n\n<p>最长和谐子序列是&nbsp;<code>[1,2]</code>，<code>[2,3]</code>&nbsp;和&nbsp;<code>[3,4]</code>，长度都为 2。</p>\n</div>\n\n<p><strong class=\"example\">示例 3：</strong></p>\n\n<div class=\"example-block\">\n<p><strong>输入：</strong><span class=\"example-io\">nums = [1,1,1,1]</span></p>\n\n<p><span class=\"example-io\"><b>输出：</b>0</span></p>\n\n<p><strong>解释：</strong></p>\n\n<p>不存在和谐子序列。</p>\n</div>\n\n<p>&nbsp;</p>\n\n<p><strong>提示：</strong></p>\n\n<ul>\n\t<li><code>1 &lt;= nums.length &lt;= 2 * 10<sup>4</sup></code></li>\n\t<li><code>-10<sup>9</sup> &lt;= nums[i] &lt;= 10<sup>9</sup></code></li>\n</ul>\n",
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