mirror of
https://gitee.com/coder-xiaomo/leetcode-problemset
synced 2025-01-11 02:58:13 +08:00
174 lines
22 KiB
JSON
174 lines
22 KiB
JSON
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"title": "Word Search",
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"content": "<p>Given an <code>m x n</code> grid of characters <code>board</code> and a string <code>word</code>, return <code>true</code> <em>if</em> <code>word</code> <em>exists in the grid</em>.</p>\n\n<p>The word can be constructed from letters of sequentially adjacent cells, where adjacent cells are horizontally or vertically neighboring. The same letter cell may not be used more than once.</p>\n\n<p> </p>\n<p><strong>Example 1:</strong></p>\n<img alt=\"\" src=\"https://assets.leetcode.com/uploads/2020/11/04/word2.jpg\" style=\"width: 322px; height: 242px;\" />\n<pre>\n<strong>Input:</strong> board = [["A","B","C","E"],["S","F","C","S"],["A","D","E","E"]], word = "ABCCED"\n<strong>Output:</strong> true\n</pre>\n\n<p><strong>Example 2:</strong></p>\n<img alt=\"\" src=\"https://assets.leetcode.com/uploads/2020/11/04/word-1.jpg\" style=\"width: 322px; height: 242px;\" />\n<pre>\n<strong>Input:</strong> board = [["A","B","C","E"],["S","F","C","S"],["A","D","E","E"]], word = "SEE"\n<strong>Output:</strong> true\n</pre>\n\n<p><strong>Example 3:</strong></p>\n<img alt=\"\" src=\"https://assets.leetcode.com/uploads/2020/10/15/word3.jpg\" style=\"width: 322px; height: 242px;\" />\n<pre>\n<strong>Input:</strong> board = [["A","B","C","E"],["S","F","C","S"],["A","D","E","E"]], word = "ABCB"\n<strong>Output:</strong> false\n</pre>\n\n<p> </p>\n<p><strong>Constraints:</strong></p>\n\n<ul>\n\t<li><code>m == board.length</code></li>\n\t<li><code>n = board[i].length</code></li>\n\t<li><code>1 <= m, n <= 6</code></li>\n\t<li><code>1 <= word.length <= 15</code></li>\n\t<li><code>board</code> and <code>word</code> consists of only lowercase and uppercase English letters.</li>\n</ul>\n\n<p> </p>\n<p><strong>Follow up:</strong> Could you use search pruning to make your solution faster with a larger <code>board</code>?</p>\n",
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"translatedTitle": "单词搜索",
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"translatedContent": "<p>给定一个 <code>m x n</code> 二维字符网格 <code>board</code> 和一个字符串单词 <code>word</code> 。如果 <code>word</code> 存在于网格中，返回 <code>true</code> ；否则，返回 <code>false</code> 。</p>\n\n<p>单词必须按照字母顺序，通过相邻的单元格内的字母构成，其中“相邻”单元格是那些水平相邻或垂直相邻的单元格。同一个单元格内的字母不允许被重复使用。</p>\n\n<p> </p>\n\n<p><strong>示例 1：</strong></p>\n<img alt=\"\" src=\"https://assets.leetcode.com/uploads/2020/11/04/word2.jpg\" style=\"width: 322px; height: 242px;\" />\n<pre>\n<strong>输入：</strong>board = [[\"A\",\"B\",\"C\",\"E\"],[\"S\",\"F\",\"C\",\"S\"],[\"A\",\"D\",\"E\",\"E\"]], word = \"ABCCED\"\n<strong>输出：</strong>true\n</pre>\n\n<p><strong>示例 2：</strong></p>\n<img alt=\"\" src=\"https://assets.leetcode.com/uploads/2020/11/04/word-1.jpg\" style=\"width: 322px; height: 242px;\" />\n<pre>\n<strong>输入：</strong>board = [[\"A\",\"B\",\"C\",\"E\"],[\"S\",\"F\",\"C\",\"S\"],[\"A\",\"D\",\"E\",\"E\"]], word = \"SEE\"\n<strong>输出：</strong>true\n</pre>\n\n<p><strong>示例 3：</strong></p>\n<img alt=\"\" src=\"https://assets.leetcode.com/uploads/2020/10/15/word3.jpg\" style=\"width: 322px; height: 242px;\" />\n<pre>\n<strong>输入：</strong>board = [[\"A\",\"B\",\"C\",\"E\"],[\"S\",\"F\",\"C\",\"S\"],[\"A\",\"D\",\"E\",\"E\"]], word = \"ABCB\"\n<strong>输出：</strong>false\n</pre>\n\n<p> </p>\n\n<p><strong>提示：</strong></p>\n\n<ul>\n\t<li><code>m == board.length</code></li>\n\t<li><code>n = board[i].length</code></li>\n\t<li><code>1 <= m, n <= 6</code></li>\n\t<li><code>1 <= word.length <= 15</code></li>\n\t<li><code>board</code> 和 <code>word</code> 仅由大小写英文字母组成</li>\n</ul>\n\n<p> </p>\n\n<p><strong>进阶：</strong>你可以使用搜索剪枝的技术来优化解决方案，使其在 <code>board</code> 更大的情况下可以更快解决问题？</p>\n",
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