Bulb

Bulb精品文章

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  总结常用伪类与伪元素

  ...办法点亮小灯泡，因为此时选中的是第一个 p 标签 */ .bulb 的兄弟元素 .bulb:first-child { background-image: url(../assets/img/light.png)!important; } 效果如下： /* :first-child 点亮第一个小灯泡， 此时选中的是第一个 .b...

  anRui 2019-08-30 10:50 评论0 收藏0
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  leetcode 319. Bulb Switcher

  题目要求 There are n bulbs that are initially off. You first turn on all the bulbs. Then, you turn off every second bulb. On the third round, you toggle every third bulb (turning on if its off or turning ...

  pkhope 2019-08-15 14:43 评论0 收藏0
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  设计模式--简化解释(三)——行为型模式

  ...执行所有可以执行的动作。 // Receiver(接收者) public class Bulb { public void turnOn() { System.out.println(Bulb has been lit); } public void turnOff() { System.out.println(Dar...

  cangck_X 2019-08-16 11:10 评论0 收藏0