mirror of
https://gitee.com/coder-xiaomo/leetcode-problemset
synced 2025-01-10 18:48:13 +08:00
191 lines
20 KiB
JSON
191 lines
20 KiB
JSON
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"questionId": "100203",
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"questionFrontendId": "面试题 05.02",
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"categoryTitle": "LCCI",
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"boundTopicId": 49299,
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"title": "Binary Number to String LCCI",
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"content": "<p>Given a real number between 0 and 1 (e.g., 0.72) that is passed in as a double, print the binary representation. If the number cannot be represented accurately in binary with at most 32 characters, print "ERROR".</p>\r\n\r\n<p><strong>Example1:</strong></p>\r\n\r\n<pre>\r\n<strong> Input</strong>: 0.625\r\n<strong> Output</strong>: "0.101"\r\n</pre>\r\n\r\n<p><strong>Example2:</strong></p>\r\n\r\n<pre>\r\n<strong> Input</strong>: 0.1\r\n<strong> Output</strong>: "ERROR"\r\n<strong> Note</strong>: 0.1 cannot be represented accurately in binary.\r\n</pre>\r\n\r\n<p><strong>Note: </strong></p>\r\n\r\n<ul>\r\n\t<li>This two charaters "0." should be counted into 32 characters.</li>\r\n\t<li>The number of decimal places for <code>num</code> is at most 6 digits</li>\r\n</ul>\r\n",
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"translatedTitle": "二进制数转字符串",
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"translatedContent": "<p>二进制数转字符串。给定一个介于0和1之间的实数（如0.72），类型为double，打印它的二进制表达式。如果该数字无法精确地用32位以内的二进制表示，则打印“ERROR”。</p>\n\n<p><strong>示例1:</strong></p>\n\n<pre>\n<strong> 输入</strong>：0.625\n<strong> 输出</strong>：\"0.101\"\n</pre>\n\n<p><strong>示例2:</strong></p>\n\n<pre>\n<strong> 输入</strong>：0.1\n<strong> 输出</strong>：\"ERROR\"\n<strong> 提示</strong>：0.1无法被二进制准确表示\n</pre>\n\n<p> </p>\n\n<p><strong>提示：</strong></p>\n\n<ul>\n\t<li>32位包括输出中的 <code>\"0.\"</code> 这两位。</li>\n\t<li>题目保证输入用例的小数位数最多只有 <code>6</code> 位</li>\n</ul>\n",
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"name": "Bit Manipulation",
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"hints": [
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"为了解决这个问题，试着想想如何用它来处理整数。",
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"像0.893这样的数字（以10为底），每个数字代表什么？那么以2为底的0.10 010中的每个数字代表什么？",
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"一个数字如0.893（以10为底）表示8×101 + 9×102 + 3×103。将此系统转换为以2为底。",
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"你将如何获得0.893中的第一个数字？如果乘以10，那么你会改变值得到8.93。如果乘以2，结果会是什么？",
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"想想那些不能用二进制精确表示的值会发生什么。"
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