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qiuzhao2020's Introduction

qiuzhao2020

20190804

20190805

20190806

20190807

20190808

20190809

20190810

周六不布置新题目,消化上周没做完的题目,练习面试选择题,复习简历,投简历,泡妞玩耍。

20190811

20190812

20190813

  • 至少两道头条算法题
  • 看360试题(选做)

20190814

20190815

20190817

20190818

20190820

腾讯一面知识点:

腾讯二面凉:

这是我遇到最坑爹的面试官,迟到45分钟。问了一下,是后台的面试官

  • 如何找进程中用到文件的文件名
  • 如果是分级的数据形式,如何设置你的表结构
  • python装饰器的作用
  • http与https的区别
  • 后面有点忘了。。。

20190821

剑指offer的题目

20190823

20190824

  • 京东笔试
    • tf-idf概念
      • Term_Frequency = 词在文章出现次数 / 文章总词数
      • Inverse_Document_Frequency = log( 文章总数 / 出现该词的文章数 + 1 )
      • TF-IDF = Term_Frequency * Inverse_Document_Frequency
    • 数据库中的索引有什么用
    • python中__new__与__init__在类中的区别
    • cpp中的sizeof
    • 过滤式特征选择
    • 哈夫曼树
    • 核化降维vs流式学习
    • bayes可以解决样本不均衡的问题
    • 红黑树的概念
    • python如何存储变量
    • 最大连通图
    • sin 2的泰勒展开

20180825

  • 头条笔试
    • 并查集

20190826

美团一面:

  • 算法题:topk
  • DeepFM是什么,为什么交叉有用,为什么不只用DNN
  • xdeepFM是什么
  • xgboost vs lightgbm
  • lstm结构,梯度爆炸怎么造成,怎么避免梯度消失
  • L1 与 l2,既然l2的效果好,为什么用l1
  • 忘了。。。

20190830&20190931

括号专题

20190901

头条一面凉

20190902

20190903

20190904 - 20190911

20190912

20190918

  • 动态获取输入流中位数

20190922

20190929

  • 状态机(股票模型)
    • 123
    • 188
    • 309

20191016

  • 一维连续数组相加等于k:560
  • 二维矩阵相加等于k:1074
  • 二维矩阵相加不大于k:363

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