#!/usr/bin/python # coding:utf-8 from PIL import Image, ImageDraw from HierarchicalClustering import hcluster from HierarchicalClustering import getheight from HierarchicalClustering import getdepth import numpy as np import os def drawdendrogram(clu
In the following, every capital letter represents some hexadecimal digit from 0 to f. The red-green-blue color "#AABBCC" can be written as "#ABC" in shorthand. For example, "#15c" is shorthand for the color "#1155cc&quo
In the following, every capital letter represents some hexadecimal digit from 0 to f. The red-green-blue color "#AABBCC" can be written as "#ABC" in shorthand. For example, "#15c" is shorthand for the color "#1155cc&quo
平时接触树还比较少,写一篇博文来积累一下树的相关知识. 很早之前在数据结构里面学的树的遍历. 前序遍历:根节点->左子树->右子树 中序遍历:左子树->根节点->右子树 后序遍历:左子树->右子树->根节点 例如:求下面树的三种遍历 前序遍历:abdefgc 中序遍历:debgfac 后序遍历:edgfbca 下面来记录一下今天在九度上面做的一道上海交大的机试题: 题目描述: We are all familiar with pre-order, in-order an
据外媒消息,Amazon正在开发一款App,想让大家都来为他家送包裹. Amazon的设想是,在市区招募实体零售商,租用空间或者按包裹向其支付费用.这项服务在内部代号为“On My Way”,目前还在测试阶段,未明确上线时间,也有可能永远不会上线. 平均每天要发350万个包裹的Amazon的状况是,运输成本在去年增长了31%,相比之下,营收增长速度仅为19.5%.去年,Amazon曾短暂测试付费5美元让Uber和出租车司机在旧金山送货,但由于Uber本身就在做物流的事,Amazon最终未能扩大该