leetcode-problemset/leetcode-cn/originData/longest-unequal-adjacent-groups-subsequence-i.json

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        "question": {
            "questionId": "3143",
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            "title": "Longest Unequal Adjacent Groups Subsequence I",
            "titleSlug": "longest-unequal-adjacent-groups-subsequence-i",
            "content": "<p>You are given a string array <code>words</code> and a <strong>binary</strong> array <code>groups</code> both of length <code>n</code>, where <code>words[i]</code> is associated with <code>groups[i]</code>.</p>\n\n<p>Your task is to select the <strong>longest alternating</strong> <span data-keyword=\"subsequence-array\">subsequence</span> from <code>words</code>. A subsequence of <code>words</code> is alternating if for any two consecutive strings in the sequence, their corresponding elements in the binary array <code>groups</code> differ. Essentially, you are to choose strings such that adjacent elements have non-matching corresponding bits in the <code>groups</code> array.</p>\n\n<p>Formally, you need to find the longest subsequence of an array of indices <code>[0, 1, ..., n - 1]</code> denoted as <code>[i<sub>0</sub>, i<sub>1</sub>, ..., i<sub>k-1</sub>]</code>, such that <code>groups[i<sub>j</sub>] != groups[i<sub>j+1</sub>]</code> for each <code>0 &lt;= j &lt; k - 1</code> and then find the words corresponding to these indices.</p>\n\n<p>Return <em>the selected subsequence. If there are multiple answers, return <strong>any</strong> of them.</em></p>\n\n<p><strong>Note:</strong> The elements in <code>words</code> are distinct.</p>\n\n<p>&nbsp;</p>\n<p><strong class=\"example\">Example 1:</strong></p>\n\n<div class=\"example-block\" style=\"\n    border-color: var(--border-tertiary);\n    border-left-width: 2px;\n    color: var(--text-secondary);\n    font-size: .875rem;\n    margin-bottom: 1rem;\n    margin-top: 1rem;\n    overflow: visible;\n    padding-left: 1rem;\n\">\n<p><strong>Input:</strong> <span class=\"example-io\" style=\"\n    font-family: Menlo,sans-serif;\n    font-size: 0.85rem;\n\">words = [&quot;e&quot;,&quot;a&quot;,&quot;b&quot;], groups = [0,0,1]</span></p>\n\n<p><strong>Output:</strong> <span class=\"example-io\" style=\"\n    font-family: Menlo,sans-serif;\n    font-size: 0.85rem;\n\">[&quot;e&quot;,&quot;b&quot;]</span></p>\n\n<p><strong>Explanation:</strong> A subsequence that can be selected is <code>[&quot;e&quot;,&quot;b&quot;]</code> because <code>groups[0] != groups[2]</code>. Another subsequence that can be selected is <code>[&quot;a&quot;,&quot;b&quot;]</code> because <code>groups[1] != groups[2]</code>. It can be demonstrated that the length of the longest subsequence of indices that satisfies the condition is <code>2</code>.</p>\n</div>\n\n<p><strong class=\"example\">Example 2:</strong></p>\n\n<div class=\"example-block\" style=\"\n    border-color: var(--border-tertiary);\n    border-left-width: 2px;\n    color: var(--text-secondary);\n    font-size: .875rem;\n    margin-bottom: 1rem;\n    margin-top: 1rem;\n    overflow: visible;\n    padding-left: 1rem;\n\">\n<p><strong>Input:</strong> <span class=\"example-io\" style=\"\n    font-family: Menlo,sans-serif;\n    font-size: 0.85rem;\n\">words = [&quot;a&quot;,&quot;b&quot;,&quot;c&quot;,&quot;d&quot;], groups = [1,0,1,1]</span></p>\n\n<p><strong>Output:</strong> <span class=\"example-io\" style=\"\n    font-family: Menlo,sans-serif;\n    font-size: 0.85rem;\n\">[&quot;a&quot;,&quot;b&quot;,&quot;c&quot;]</span></p>\n\n<p><strong>Explanation:</strong> A subsequence that can be selected is <code>[&quot;a&quot;,&quot;b&quot;,&quot;c&quot;]</code> because <code>groups[0] != groups[1]</code> and <code>groups[1] != groups[2]</code>. Another subsequence that can be selected is <code>[&quot;a&quot;,&quot;b&quot;,&quot;d&quot;]</code> because <code>groups[0] != groups[1]</code> and <code>groups[1] != groups[3]</code>. It can be shown that the length of the longest subsequence of indices that satisfies the condition is <code>3</code>.</p>\n</div>\n\n<p>&nbsp;</p>\n<p><strong>Constraints:</strong></p>\n\n<ul>\n\t<li><code>1 &lt;= n == words.length == groups.length &lt;= 100</code></li>\n\t<li><code>1 &lt;= words[i].length &lt;= 10</code></li>\n\t<li><code>groups[i]</code> is either <code>0</code> or <code>1.</code></li>\n\t<li><code>words</code> consists of <strong>distinct</strong> strings.</li>\n\t<li><code>words[i]</code> consists of lowercase English letters.</li>\n</ul>\n",
            "translatedTitle": "最长相邻不相等子序列 I",
            "translatedContent": "<p>给你一个下标从&nbsp;<strong>0</strong>&nbsp;开始的字符串数组&nbsp;<code>words</code>&nbsp;，和一个下标从 <strong>0</strong>&nbsp;开始的 <strong>二进制</strong>&nbsp;数组&nbsp;<code>groups</code>&nbsp;，两个数组长度都是&nbsp;<code>n</code>&nbsp;。</p>\n\n<p>你需要从&nbsp;<code>words</code>&nbsp;中选出&nbsp;<strong>最长<span data-keyword=\"subsequence-array\">子序列</span></strong>。如果对于序列中的任何两个连续串，二进制数组&nbsp;<code>groups</code>&nbsp;中它们的对应元素不同，则&nbsp;<code>words</code> 的子序列是不同的。</p>\n\n<p>正式来说，你需要从下标&nbsp;<code>[0, 1, ..., n - 1]</code>&nbsp;中选出一个&nbsp;<strong>最长子序列</strong>&nbsp;，将这个子序列记作长度为 <code>k</code> 的&nbsp;<code>[i<sub>0</sub>, i<sub>1</sub>, ..., i<sub>k - 1</sub>]</code>&nbsp;，对于所有满足&nbsp;<code>0 &lt;= j&nbsp;&lt; k - 1</code>&nbsp;的&nbsp;<code>j</code>&nbsp;都有&nbsp;<code>groups[i<sub>j</sub>] != groups[i<sub>j + 1</sub>]</code>&nbsp;。</p>\n\n<p>请你返回一个字符串数组，它是下标子序列&nbsp;<strong>依次</strong>&nbsp;对应&nbsp;<code>words</code>&nbsp;数组中的字符串连接形成的字符串数组。如果有多个答案，返回 <strong>任意</strong> 一个。</p>\n\n<p><b>注意：</b><code>words</code>&nbsp;中的元素是不同的&nbsp;。</p>\n\n<p>&nbsp;</p>\n\n<p><strong class=\"example\">示例 1：</strong></p>\n\n<pre>\n<b>输入：</b>words = [\"e\",\"a\",\"b\"], groups = [0,0,1]\n<b>输出：</b>[\"e\",\"b\"]\n<strong>解释：</strong>一个可行的子序列是 [0,2] ，因为 groups[0] != groups[2] 。\n所以一个可行的答案是 [words[0],words[2]] = [\"e\",\"b\"] 。\n另一个可行的子序列是 [1,2] ，因为 groups[1] != groups[2] 。\n得到答案为 [words[1],words[2]] = [\"a\",\"b\"] 。\n这也是一个可行的答案。\n符合题意的最长子序列的长度为 2 。</pre>\n\n<p><strong class=\"example\">示例 2：</strong></p>\n\n<pre>\n<b>输入：</b>words = [\"a\",\"b\",\"c\",\"d\"], groups = [1,0,1,1]\n<b>输出：</b>[\"a\",\"b\",\"c\"]\n<b>解释：</b>一个可行的子序列为 [0,1,2] 因为 groups[0] != groups[1] 且 groups[1] != groups[2] 。\n所以一个可行的答案是 [words[0],words[1],words[2]] = [\"a\",\"b\",\"c\"] 。\n另一个可行的子序列为 [0,1,3] 因为 groups[0] != groups[1] 且 groups[1] != groups[3] 。\n得到答案为 [words[0],words[1],words[3]] = [\"a\",\"b\",\"d\"] 。\n这也是一个可行的答案。\n符合题意的最长子序列的长度为 3 。</pre>\n\n<p>&nbsp;</p>\n\n<p><strong>提示：</strong></p>\n\n<ul>\n\t<li><code>1 &lt;= n == words.length == groups.length &lt;= 100</code></li>\n\t<li><code>1 &lt;= words[i].length &lt;= 10</code></li>\n\t<li><code>groups[i]</code>&nbsp;是&nbsp;<code>0</code>&nbsp;或&nbsp;<code>1</code>。</li>\n\t<li><code>words</code>&nbsp;中的字符串 <strong>互不相同</strong>&nbsp;。</li>\n\t<li><code>words[i]</code>&nbsp;只包含小写英文字母。</li>\n</ul>\n",
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