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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
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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
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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
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Invert a binary tree. to Solution: 阅读全文
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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
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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
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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
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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
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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
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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