一片叶子啊

摘要： 首先需要保证hadoop已经在电脑上安装。然后接下来只需要下载hhase配置就行了。 Step1: 下载hbase http://archive.apache.org/dist/hbase/1.2.6/ 选择hbase-1.2.6-bin.tar.gz Step2: 解压hbase到指定目录 Ste 阅读全文

摘要： Give a string s, count the number of non-empty (contiguous) substrings that have the same number of 0's and 1's, and all the 0's and all the 1's in th 阅读全文

摘要： Given a non-empty binary tree, return the average value of the nodes on each level in the form of an array. Example 1: Note: Answer: 这里应用BFS的解法。网上还有一种 阅读全文

摘要： Invert a binary tree. to Solution: 阅读全文

摘要： Given a binary search tree and the lowest and highest boundaries as L and R, trim the tree so that all its elements lies in [L, R] (R >= L). You might 阅读全文

摘要： Given an integer array with even length, where different numbers in this array represent different kinds of candies. Each number means one candy of th 阅读全文

摘要： Initially, there is a Robot at position (0, 0). Given a sequence of its moves, judge if this robot makes a circle, which means it moves back to the or 阅读全文

摘要： Given two binary trees and imagine that when you put one of them to cover the other, some nodes of the two trees are overlapped while the others are n 阅读全文

摘要： MDN上解释的很清楚， https://developer.mozilla.org/zh-CN/docs/Web/JavaScript/Reference/Global_Objects/Array/Reduce 这儿再记录一下： 定义： reduce() 方法对累加器和数组中的每个元素 (从左到右) 阅读全文

摘要： 以下讨论的属性无论大小，收缩或者伸展，均是按照flex conntainer的主轴方向说的。 flex-grow: 是否允许flex item在多余空间内伸展。默认为0, 即不允许伸展。 flex-shrink: 是否允许flex item在flex container宽度收缩时自动收缩。默认为1， 阅读全文