leetcode-problemset/leetcode-cn/originData/binary-watch.json

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            "questionId": "401",
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            "categoryTitle": "Algorithms",
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            "title": "Binary Watch",
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            "content": "<p>A binary watch has 4 LEDs on the top which represent the hours (0-11), and the 6 LEDs on the bottom represent the minutes (0-59). Each LED represents a zero or one, with the least significant bit on the right.</p>\n\n<ul>\n\t<li>For example, the below binary watch reads <code>&quot;4:51&quot;</code>.</li>\n</ul>\n\n<p><img alt=\"\" src=\"https://assets.leetcode.com/uploads/2021/04/08/binarywatch.jpg\" style=\"width: 500px; height: 500px;\" /></p>\n\n<p>Given an integer <code>turnedOn</code> which represents the number of LEDs that are currently on, return <em>all possible times the watch could represent</em>. You may return the answer in <strong>any order</strong>.</p>\n\n<p>The hour must not contain a leading zero.</p>\n\n<ul>\n\t<li>For example, <code>&quot;01:00&quot;</code> is not valid. It should be <code>&quot;1:00&quot;</code>.</li>\n</ul>\n\n<p>The minute must be consist of two digits and may contain a leading zero.</p>\n\n<ul>\n\t<li>For example, <code>&quot;10:2&quot;</code> is not valid. It should be <code>&quot;10:02&quot;</code>.</li>\n</ul>\n\n<p>&nbsp;</p>\n<p><strong>Example 1:</strong></p>\n<pre><strong>Input:</strong> turnedOn = 1\n<strong>Output:</strong> [\"0:01\",\"0:02\",\"0:04\",\"0:08\",\"0:16\",\"0:32\",\"1:00\",\"2:00\",\"4:00\",\"8:00\"]\n</pre><p><strong>Example 2:</strong></p>\n<pre><strong>Input:</strong> turnedOn = 9\n<strong>Output:</strong> []\n</pre>\n<p>&nbsp;</p>\n<p><strong>Constraints:</strong></p>\n\n<ul>\n\t<li><code>0 &lt;= turnedOn &lt;= 10</code></li>\n</ul>\n",
            "translatedTitle": "二进制手表",
            "translatedContent": "<p>二进制手表顶部有 4 个 LED 代表<strong> 小时（0-11）</strong>，底部的 6 个 LED 代表<strong> 分钟（0-59）</strong>。每个 LED 代表一个 0 或 1，最低位在右侧。</p>\n\n<ul>\n\t<li>例如，下面的二进制手表读取 <code>\"3:25\"</code> 。</li>\n</ul>\n\n<p><img src=\"https://assets.leetcode-cn.com/aliyun-lc-upload/uploads/2021/03/29/binary_clock_samui_moon.jpg\" style=\"height: 300px; width\" /></p>\n\n<p><small><em>（图源：<a href=\"https://commons.m.wikimedia.org/wiki/File:Binary_clock_samui_moon.jpg\">WikiMedia - Binary clock samui moon.jpg</a> ，许可协议：<a href=\"https://creativecommons.org/licenses/by-sa/3.0/deed.en\">Attribution-ShareAlike 3.0 Unported (CC BY-SA 3.0)</a> ）</em></small></p>\n\n<p>给你一个整数 <code>turnedOn</code> ，表示当前亮着的 LED 的数量，返回二进制手表可以表示的所有可能时间。你可以 <strong>按任意顺序</strong> 返回答案。</p>\n\n<p>小时不会以零开头：</p>\n\n<ul>\n\t<li>例如，<code>\"01:00\"</code> 是无效的时间，正确的写法应该是 <code>\"1:00\"</code> 。</li>\n</ul>\n\n<p>分钟必须由两位数组成，可能会以零开头：</p>\n\n<ul>\n\t<li>例如，<code>\"10:2\"</code> 是无效的时间，正确的写法应该是 <code>\"10:02\"</code> 。</li>\n</ul>\n\n<p> </p>\n\n<p><strong>示例 1：</strong></p>\n\n<pre>\n<strong>输入：</strong>turnedOn = 1\n<strong>输出：</strong>[\"0:01\",\"0:02\",\"0:04\",\"0:08\",\"0:16\",\"0:32\",\"1:00\",\"2:00\",\"4:00\",\"8:00\"]\n</pre>\n\n<p><strong>示例 2：</strong></p>\n\n<pre>\n<strong>输入：</strong>turnedOn = 9\n<strong>输出：</strong>[]\n</pre>\n\n<p> </p>\n\n<p><strong>提示：</strong></p>\n\n<ul>\n\t<li><code>0 <= turnedOn <= 10</code></li>\n</ul>\n",
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                    "code": "class Solution {\npublic:\n    vector<string> readBinaryWatch(int turnedOn) {\n\n    }\n};",
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                "Simplify by seeking for solutions that involve comparing bit counts.",
                "Consider calculating all possible times for comparison purposes."
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