leetcode-problemset/leetcode-cn/originData/print-zero-even-odd.json

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        "question": {
            "questionId": "1216",
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            "categoryTitle": "Concurrency",
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            "title": "Print Zero Even Odd",
            "titleSlug": "print-zero-even-odd",
            "content": "<p>You have a function <code>printNumber</code> that can be called with an integer parameter and prints it to the console.</p>\n\n<ul>\n\t<li>For example, calling <code>printNumber(7)</code> prints <code>7</code> to the console.</li>\n</ul>\n\n<p>You are given an instance of the class <code>ZeroEvenOdd</code> that has three functions: <code>zero</code>, <code>even</code>, and <code>odd</code>. The same instance of <code>ZeroEvenOdd</code> will be passed to three different threads:</p>\n\n<ul>\n\t<li><strong>Thread A:</strong> calls <code>zero()</code> that should only output <code>0</code>&#39;s.</li>\n\t<li><strong>Thread B:</strong> calls <code>even()</code> that should only output even numbers.</li>\n\t<li><strong>Thread C:</strong> calls <code>odd()</code> that should only output odd numbers.</li>\n</ul>\n\n<p>Modify the given class to output the series <code>&quot;010203040506...&quot;</code> where the length of the series must be <code>2n</code>.</p>\n\n<p>Implement the <code>ZeroEvenOdd</code> class:</p>\n\n<ul>\n\t<li><code>ZeroEvenOdd(int n)</code> Initializes the object with the number <code>n</code> that represents the numbers that should be printed.</li>\n\t<li><code>void zero(printNumber)</code> Calls <code>printNumber</code> to output one zero.</li>\n\t<li><code>void even(printNumber)</code> Calls <code>printNumber</code> to output one even number.</li>\n\t<li><code>void odd(printNumber)</code> Calls <code>printNumber</code> to output one odd number.</li>\n</ul>\n\n<p>&nbsp;</p>\n<p><strong class=\"example\">Example 1:</strong></p>\n\n<pre>\n<strong>Input:</strong> n = 2\n<strong>Output:</strong> &quot;0102&quot;\n<strong>Explanation:</strong> There are three threads being fired asynchronously.\nOne of them calls zero(), the other calls even(), and the last one calls odd().\n&quot;0102&quot; is the correct output.\n</pre>\n\n<p><strong class=\"example\">Example 2:</strong></p>\n\n<pre>\n<strong>Input:</strong> n = 5\n<strong>Output:</strong> &quot;0102030405&quot;\n</pre>\n\n<p>&nbsp;</p>\n<p><strong>Constraints:</strong></p>\n\n<ul>\n\t<li><code>1 &lt;= n &lt;= 1000</code></li>\n</ul>\n",
            "translatedTitle": "打印零与奇偶数",
            "translatedContent": "<p>现有函数 <code>printNumber</code> 可以用一个整数参数调用，并输出该整数到控制台。</p>\n\n<ul>\n\t<li>例如，调用 <code>printNumber(7)</code> 将会输出 <code>7</code> 到控制台。</li>\n</ul>\n\n<p>给你类 <code>ZeroEvenOdd</code> 的一个实例，该类中有三个函数：<code>zero</code>、<code>even</code> 和 <code>odd</code> 。<code>ZeroEvenOdd</code> 的相同实例将会传递给三个不同线程：</p>\n\n<ul>\n\t<li><strong>线程 A：</strong>调用 <code>zero()</code> ，只输出 <code>0</code></li>\n\t<li><strong>线程 B：</strong>调用 <code>even()</code> ，只输出偶数</li>\n\t<li><strong>线程 C：</strong>调用 <code>odd()</code> ，只输出奇数</li>\n</ul>\n\n<p>修改给出的类，以输出序列 <code>\"010203040506...\"</code> ，其中序列的长度必须为 <code>2n</code> 。</p>\n\n<p>实现 <code>ZeroEvenOdd</code> 类：</p>\n\n<ul>\n\t<li><code>ZeroEvenOdd(int n)</code> 用数字 <code>n</code> 初始化对象，表示需要输出的数。</li>\n\t<li><code>void zero(printNumber)</code> 调用 <code>printNumber</code> 以输出一个 0 。</li>\n\t<li><code>void even(printNumber)</code> 调用<code>printNumber</code> 以输出偶数。</li>\n\t<li><code>void odd(printNumber)</code> 调用 <code>printNumber</code> 以输出奇数。</li>\n</ul>\n\n<p>&nbsp;</p>\n\n<p><strong>示例 1：</strong></p>\n\n<pre>\n<strong>输入：</strong>n = 2\n<strong>输出：</strong>\"0102\"\n<strong>解释：</strong>三条线程异步执行，其中一个调用 zero()，另一个线程调用 even()，最后一个线程调用odd()。正确的输出为 \"0102\"。\n</pre>\n\n<p><strong>示例 2：</strong></p>\n\n<pre>\n<strong>输入：</strong>n = 5\n<strong>输出：</strong>\"0102030405\"\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;= 1000</code></li>\n</ul>\n",
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                    "code": "class ZeroEvenOdd {\nprivate:\n    int n;\n\npublic:\n    ZeroEvenOdd(int n) {\n        this->n = n;\n    }\n\n    // printNumber(x) outputs \"x\", where x is an integer.\n    void zero(function<void(int)> printNumber) {\n        \n    }\n\n    void even(function<void(int)> printNumber) {\n        \n    }\n\n    void odd(function<void(int)> printNumber) {\n        \n    }\n};",
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