Yunrui Li – Medium

Yunrui Li

Yunrui Li

Leetcode-Binary Tree Traversal

For recursion, it’s too easy. 3 BT traversals using stack(iterative way to solve it).

Oct 17, 2021

Oct 17, 2021

Yunrui Li

Leetcode-Combination Series

Usually, when it comes to combination problems, the most naive way to solve the problem is generate all possible solutions. And, we use…

Oct 6, 2021

Oct 6, 2021

Yunrui Li

Leetcode-Basic Calculator Series

Given 一個string expression, 我們要去計算result of expression.

Sep 10, 2021

Sep 10, 2021

Yunrui Li

How to practice LeetCode efficiently?

2021–2022刷題重點:

Aug 24, 2021

Aug 24, 2021

Yunrui Li

ML system design interview-Feed Based System

什麼是Feed Based Feed System? 經典的就是Tweeter’s Feed, Facebooks Timeline, IG’s story.

Aug 11, 2021

ML system design interview-Feed Based System

Aug 11, 2021

Yunrui Li

ML-Evaluation Metrics

Why do you need to be familiar with evaluation metric?

Aug 8, 2021

ML-Evaluation Metrics

Aug 8, 2021

Yunrui Li

Leetcode-subarray

Some pattern about continuous subarray related problem. Usually, naive solution is generate all possible subarray, which takes O(n²) times…

Aug 4, 2021

Leetcode-subarray

Aug 4, 2021

Yunrui Li

ML system design interview-Recommendation System

Explicit data 在 data collection會有MNAR(非隨機缺失的問題

Jul 28, 2021

ML system design interview-Recommendation System

Jul 28, 2021

Yunrui Li

ML questions

This posts focus on those ML fundamentals.

Jul 16, 2021

ML questions

Jul 16, 2021

Yunrui Li

Leetcode-Data Stream

What is data stream?

Jul 15, 2021

Leetcode-Data Stream

Jul 15, 2021

Yunrui Li

Yunrui Li

I’m Taiwanese expat. I’v worked in Singapore as data scientist after graduation from Taiwan and currently I work in Amsterdam as machine learning engineer.

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