GetRandom

GetRandom精品文章

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  快杰云主机 SSH登录缓慢的排查和解决

  ...。 分析日志可以发现，启动时，该命令被卡在了 getrandom 系统调用上，解除阻塞时间点为 23:10:48。 getrandom 点击查看参考资料 http://man7.org/linux/man-pages/man2/getrandom.2.html getrandom 封装了对 /dev/urandom 字符设备文件...

  NotFound 2019-12-27 11:56 评论0 收藏0
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  鼠标跟随炫彩效果

  ... this.y = y; //y坐标 this.size = size; //大小 this.color = getRandomCokor(); //随机的颜色 this.X = getRandom(speed); //x轴随机的移动速度 this.Y = getRandom(speed); //y轴随机的移动速度 circleArr.push...

  yiliang 2019-08-23 14:40 评论0 收藏0
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  Insert Delete GetRandom O(1) & Duplicates allo

  380. Insert Delete GetRandom O(1) Design a data structure that supports all following operations in average O(1) time. insert(val): Inserts an item val to the set if not already present. remove(val)...

  2shou 2019-08-14 17:11 评论0 收藏0
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  leetcode380. Insert Delete GetRandom O(1)

  ...already present. remove(val): Removes an item val from the set if present. getRandom: Returns a random element from current set of elements. Each element must have the same probability of being ret...

  phoenixsky 2019-08-16 15:06 评论0 收藏0
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  leetcode381. Insert Delete GetRandom O(1) - Duplic

  ...llection. remove(val): Removes an item val from the collection if present. getRandom: Returns a random element from current collection of elements. The probability of each element being returned is...

  h9911 2019-08-16 15:06 评论0 收藏0
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  JavaScript异步编程：Generator与Async

  ... next(gen.next(data)).then(resolve) }) } }) } } function getRandom () { return new Promise(resolve => { setTimeout(_ => resolve(Math.random() * 10 | 0), 1000) }) } functi...

  leon 2019-08-22 17:00 评论0 收藏0
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  哈希函数与哈希表

  ...做到不重复加入delete(key):将原本在结构中的某个key移除，getRandom():等概率随机返回结构中的任何一个key要求：三个方法的时间复杂度都是O(1) 解法：准备两张hash表(一张hash表无法做到严格等概率随机返回一个) HashMap keyIndexMap = new ...

  Rainie 2019-08-19 11:04 评论0 收藏0
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  洗牌算法

  ...写出的这个序列，现在就是原始数字的随机排列 function getRandom(arr, length) { const random = Math.floor(Math.random() * length) // 原始算法将在此处消耗较多资源 if (arr.includes(random)) { return getRandom(arr, length) }...

  omgdog 2019-08-23 17:53 评论0 收藏0
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  [LeetCode] 382. Linked List Random Node

  ...ead.next.next = new ListNode(3);Solution solution = new Solution(head); // getRandom() should return either 1, 2, or 3 randomly. Each element should have equal probability of returning.solution.get...

  崔晓明 2019-08-16 13:47 评论0 收藏0
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  JavaScript中的图片处理与合成(四)

  ...(); let imgData = []; for (let i = 0; i < n * 10000; i += 4) { let r = getRandom(0,255), g = getRandom(0,255), b = getRandom(0,255), a = 1; if (r

  Coding01 2019-08-22 15:09 评论0 收藏0
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  JavaScript & jQuery 常用方法小记

  ...的手机号！); return false; }; 6.生成随机数函数 function getRandom(n){ return Math.floor(Math.random()*n+1) } 1）获取0-100的随机数——getRandom(100); 2）获取0-999的随机数——getRandom(999); 7.jQuery模拟鼠标点击事件 $(#a).trigge...

  codeGoogle 2019-08-21 10:31 评论0 收藏0
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  leetcode382. Linked List Random Node

  ...d.next.next = new ListNode(3); Solution solution = new Solution(head); // getRandom() should return either 1, 2, or 3 randomly. Each element should have equal probability of returning. solution.ge...

  xiaodao 2019-08-16 17:58 评论0 收藏0