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{
"data": {
"question": {
"questionId": "915",
"questionFrontendId": "478",
"categoryTitle": "Algorithms",
"boundTopicId": 1180,
"title": "Generate Random Point in a Circle",
"titleSlug": "generate-random-point-in-a-circle",
"content": "<p>Given the radius and the position of the center of a circle, implement the function <code>randPoint</code> which generates a uniform random point inside the circle.</p>\n\n<p>Implement the <code>Solution</code> class:</p>\n\n<ul>\n\t<li><code>Solution(double radius, double x_center, double y_center)</code> initializes the object with the radius of the circle <code>radius</code> and the position of the center <code>(x_center, y_center)</code>.</li>\n\t<li><code>randPoint()</code> returns a random point inside the circle. A point on the circumference of the circle is considered to be in the circle. The answer is returned as an array <code>[x, y]</code>.</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[&quot;Solution&quot;, &quot;randPoint&quot;, &quot;randPoint&quot;, &quot;randPoint&quot;]\n[[1.0, 0.0, 0.0], [], [], []]\n<strong>Output</strong>\n[null, [-0.02493, -0.38077], [0.82314, 0.38945], [0.36572, 0.17248]]\n\n<strong>Explanation</strong>\nSolution solution = new Solution(1.0, 0.0, 0.0);\nsolution.randPoint(); // return [-0.02493, -0.38077]\nsolution.randPoint(); // return [0.82314, 0.38945]\nsolution.randPoint(); // return [0.36572, 0.17248]\n</pre>\n\n<p>&nbsp;</p>\n<p><strong>Constraints:</strong></p>\n\n<ul>\n\t<li><code>0 &lt;&nbsp;radius &lt;= 10<sup>8</sup></code></li>\n\t<li><code>-10<sup>7</sup> &lt;= x_center, y_center &lt;= 10<sup>7</sup></code></li>\n\t<li>At most <code>3 * 10<sup>4</sup></code> calls will be made to <code>randPoint</code>.</li>\n</ul>\n",
"translatedTitle": "在圆内随机生成点",
"translatedContent": "<p>给定圆的半径和圆心的位置,实现函数 <code>randPoint</code> ,在圆中产生均匀随机点。</p>\n\n<p>实现&nbsp;<code>Solution</code>&nbsp;类:</p>\n\n<ul>\n\t<li><code>Solution(double radius, double x_center, double y_center)</code>&nbsp;用圆的半径&nbsp;<code>radius</code>&nbsp;和圆心的位置<code> (x_center, y_center)</code> 初始化对象</li>\n\t<li><code>randPoint()</code>&nbsp;返回圆内的一个随机点。圆周上的一点被认为在圆内。答案作为数组返回 <code>[x, y]</code> 。</li>\n</ul>\n\n<p>&nbsp;</p>\n\n<p><strong>示例 1</strong></p>\n\n<pre>\n<strong>输入: \n</strong>[\"Solution\",\"randPoint\",\"randPoint\",\"randPoint\"]\n[[1.0, 0.0, 0.0], [], [], []]\n<strong>输出: </strong>[null, [-0.02493, -0.38077], [0.82314, 0.38945], [0.36572, 0.17248]]\n<strong>解释:</strong>\nSolution solution = new Solution(1.0, 0.0, 0.0);\nsolution.randPoint ();//返回[-0.02493-0.38077]\nsolution.randPoint ();//返回[0.82314,0.38945]\nsolution.randPoint ();//返回[0.36572,0.17248]</pre>\n\n<p>&nbsp;</p>\n\n<p><strong>提示:</strong></p>\n\n<ul>\n\t<li><code>0 &lt;&nbsp;radius &lt;= 10<sup>8</sup></code></li>\n\t<li><code>-10<sup>7</sup>&nbsp;&lt;= x_center, y_center &lt;= 10<sup>7</sup></code></li>\n\t<li><code>randPoint</code> 最多被调用&nbsp;<code>3 * 10<sup>4</sup></code>&nbsp;次</li>\n</ul>\n",
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"code": "class Solution {\npublic:\n Solution(double radius, double x_center, double y_center) {\n\n }\n \n vector<double> randPoint() {\n\n }\n};\n\n/**\n * Your Solution object will be instantiated and called as such:\n * Solution* obj = new Solution(radius, x_center, y_center);\n * vector<double> param_1 = obj->randPoint();\n */",
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"code": "class Solution {\n\n public Solution(double radius, double x_center, double y_center) {\n\n }\n \n public double[] randPoint() {\n\n }\n}\n\n/**\n * Your Solution object will be instantiated and called as such:\n * Solution obj = new Solution(radius, x_center, y_center);\n * double[] param_1 = obj.randPoint();\n */",
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