在职刷题上课准备ML Engineer打卡

Day 19
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leetcode:
Inorder Successor in BST
Redundant Connection II
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ML foundations
-Recommender system Week 5  (没来得及看作业)
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改了改简历。。。

Day 21  (Day 20 大娃生病又停了一天，带娃看医生拿药的时候一度想不刷了，现在的公司也不是不好，哎，面一轮再看看吧)
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leetcode:
Kill Process
Find Median from Data Stream （maintain 两个heap）
Lowest Common Ancestor of a Binary Search Tree



补充内容 (2019-3-7 13:29):
Course Schedule
Validate Binary Search Tree
Minimum Window Substring

Day22
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Closest Binary Search Tree Value
Word Squares   用了trie和递归
Diagonal Traverse 数学解法。。注意一下角标，边界。。。

Day23
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看完了coursera上面的UW的machine learning foundation
开始看一个specialization的machine learning: classification， week 1看完

Day24 （补记）
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Find the Duplicate Number 用快慢指针做
Linked List Cycle II
Design Tic-Tac-Toe
Majority Element
Pascal's Triangle
Top K Frequent Elements （bucket sort）

Day25
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Group Anagrams
Find Duplicate File in System
Insert Delete GetRandom O(1)  (remove的时候，把最后一个element填到remove的空格那里)
Kth Largest Element in an Array （用heap做的，nlog(k), 看了一下讨论，用quick select可以达到average O(n)，没仔细看，需要仔细看一下）
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Engineering Blog
Airbnb: smart reply来客服
Pinterest: An update on Pixie




补充内容 (2019-3-11 07:04):
Pinterest: PinSage

Day26 (停一天)
Day27
leetcode
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Longest Substring Without Repeating Characters
Find Leaves of Binary Tree
Text Justification
Wildcard Matching
Add Two Numbers
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cousera UW machine learning course
classification Week 2

Day 28 （补记）
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Palindromic Substrings
Unique Paths
Flatten Nested List Iterator
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Day29
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今天试了一下leetcode mock 的新功能
试了一下random 电面三道题
Add Bold Tag in String
Missing Ranges
Moving Average from Data Stream
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补充内容 (2019-3-15 13:22):
N-Queens  

可以讨论一下为什么选择ML Engineer方向么？