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  快杰云主機(jī) SSH登錄緩慢的排查和解決

  ...。 分析日志可以發(fā)現(xiàn)，啟動(dòng)時(shí)，該命令被卡在了 getrandom 系統(tǒng)調(diào)用上，解除阻塞時(shí)間點(diǎn)為 23:10:48。 getrandom 點(diǎn)擊查看參考資料?http://man7.org/linux/man-pages/man2/getrandom.2.html getrandom 封裝了對(duì) /dev/urandom 字符設(shè)備文件...

  NotFound 2019-12-27 11:56 評(píng)論0 收藏0
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  鼠標(biāo)跟隨炫彩效果

  ... this.y = y; //y坐標(biāo) this.size = size; //大小 this.color = getRandomCokor(); //隨機(jī)的顏色 this.X = getRandom(speed); //x軸隨機(jī)的移動(dòng)速度 this.Y = getRandom(speed); //y軸隨機(jī)的移動(dòng)速度 circleArr.push...

  yiliang 2019-08-23 14:40 評(píng)論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 評(píng)論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 評(píng)論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 評(píng)論0 收藏0
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  JavaScript異步編程：Generator與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 評(píng)論0 收藏0
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  哈希函數(shù)與哈希表

  ...做到不重復(fù)加入delete(key):將原本在結(jié)構(gòu)中的某個(gè)key移除，getRandom():等概率隨機(jī)返回結(jié)構(gòu)中的任何一個(gè)key要求：三個(gè)方法的時(shí)間復(fù)雜度都是O(1) 解法：準(zhǔn)備兩張hash表(一張hash表無(wú)法做到嚴(yán)格等概率隨機(jī)返回一個(gè)) HashMap keyIndexMap = new ...

  Rainie 2019-08-19 11:04 評(píng)論0 收藏0
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  洗牌算法

  ...寫(xiě)出的這個(gè)序列，現(xiàn)在就是原始數(shù)字的隨機(jī)排列 function getRandom(arr, length) { const random = Math.floor(Math.random() * length) // 原始算法將在此處消耗較多資源 if (arr.includes(random)) { return getRandom(arr, length) }...

  omgdog 2019-08-23 17:53 評(píng)論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...

  崔曉明 2019-08-16 13:47 評(píng)論0 收藏0
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  JavaScript中的圖片處理與合成(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 評(píng)論0 收藏0
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  JavaScript & jQuery 常用方法小記

  ...的手機(jī)號(hào)！); return false; }; 6.生成隨機(jī)數(shù)函數(shù) function getRandom(n){ return Math.floor(Math.random()*n+1) } 1）獲取0-100的隨機(jī)數(shù)——getRandom(100); 2）獲取0-999的隨機(jī)數(shù)——getRandom(999); 7.jQuery模擬鼠標(biāo)點(diǎn)擊事件 $(#a).trigge...

  codeGoogle 2019-08-21 10:31 評(píng)論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 評(píng)論0 收藏0