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小墨
2022-05-02 23:44:12 +08:00
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leetcode-cn/originData/k-th-symbol-in-grammar.json
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@@ -12,7 +12,7 @@
"translatedContent": "<p>我们构建了一个包含 <code>n</code> 行(&nbsp;<strong>索引从 1&nbsp; 开始&nbsp;</strong>)的表。首先在第一行我们写上一个 <code>0</code>。接下来的每一行，将前一行中的<code>0</code>替换为<code>01</code>，<code>1</code>替换为<code>10</code>。</p>\n\n<ul>\n\t<li>例如，对于 <code>n = 3</code> ，第 <code>1</code> 行是 <code>0</code> ，第 <code>2</code> 行是 <code>01</code> ，第3行是 <code>0110</code> 。</li>\n</ul>\n\n<p>给定行数&nbsp;<code>n</code>&nbsp;和序数 <code>k</code>，返回第 <code>n</code> 行中第 <code>k</code>&nbsp;个字符。（&nbsp;<code>k</code>&nbsp;<strong>从索引 1 开始</strong>）</p>\n\n<p><br />\n<strong>示例 1:</strong></p>\n\n<pre>\n<strong>输入:</strong> n = 1, k = 1\n<strong>输出:</strong> 0\n<strong>解释: </strong>第一行：<u>0</u>\n</pre>\n\n<p><strong>示例 2:</strong></p>\n\n<pre>\n<strong>输入:</strong> n = 2, k = 1\n<strong>输出:</strong> 0\n<strong>解释:</strong> \n第一行: 0 \n第二行: 0<u>1</u>\n</pre>\n\n<p><strong>示例 3:</strong></p>\n\n<pre>\n<strong>输入:</strong> n = 2, k = 2\n<strong>输出:</strong> 1\n<strong>解释:</strong>\n第一行: 0\n第二行: 0<u>1</u>\n</pre>\n\n<p>&nbsp;</p>\n\n<p><strong>提示:</strong></p>\n\n<ul>\n\t<li><code>1 &lt;= n &lt;= 30</code></li>\n\t<li><code>1 &lt;= k &lt;= 2<sup>n - 1</sup></code></li>\n</ul>\n",
"isPaidOnly": false,
"difficulty": "Medium",
"likes": 150,
"likes": 151,
"dislikes": 0,
"isLiked": null,
"similarQuestions": "[]",
@@ -149,7 +149,7 @@
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"hints": [
"Try to represent the current (N, K) in terms of some (N-1, prevK). What is prevK ?"
],