forever_cc

摘要： You have a number of envelopes with widths and heights given as a pair of integers (w, h). One envelope can fit into another if and only if both the w 阅读全文

摘要： 前端：利用ExtJs的autoEl功能加载图片。 小编心得：autoEl会自动加载，要实现点击验证码刷新，登录失败刷新，方法是给请求的url加上时间戳。所以刷新验证码只要在需要刷新的时候重新设置加上时间戳的src即可。 疑问解答：为什么只是给了src一个路径，并没有给图片地址，页面能显示图片呢？ 目 阅读全文

摘要： You are given an integer array nums and you have to return a new counts array. The counts array has the property where counts[i] is the number of smal... 阅读全文

摘要： Given a string which contains only lowercase letters, remove duplicate letters so that every letter appear once and only once. You must make sure your... 阅读全文

摘要： Given a string array words, find the maximum value of length(word[i]) * length(word[j]) where the two words do not share common letters. You may assum... 阅读全文

摘要： 变换灯泡颜色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 ... 阅读全文