---
title: "Wei-Lin Cheng (@weilincheng) | Hashnode"
description: "Wei-Lin Cheng (@weilincheng) writes on Hashnode. Read their latest articles and follow their work."
url: "https://hashnode.com/@weilincheng"
---

@weilincheng

# Wei-Lin Cheng

@weilincheng · Taiwan · Joined January 2022

[Website](https://weilincheng.com/)

### [Easily Clean Up Your Git Branches](https://blog.weilincheng.com/easily-clean-up-your-git-branches?utm_source=hashnode&utm_medium=feed)

A Simple Guide to Remove All Branches Except Master/Main

2 min read · [blog.weilincheng.com](https://blog.weilincheng.com/easily-clean-up-your-git-branches?utm_source=hashnode&utm_medium=feed)

[Mar 26, 2023](https://hashnode.com/posts/easily-clean-up-your-git-branches/6420dbba6c2899e289cb0719)

### [\[LeetCode\] 129. Sum Root to Leaf Numbers](https://blog.weilincheng.com/leetcode-129-sum-root-to-leaf-numbers?utm_source=hashnode&utm_medium=feed)

Python | Iterative solution (dfs + stack) | Detailed Explanations

2 min read · [blog.weilincheng.com](https://blog.weilincheng.com/leetcode-129-sum-root-to-leaf-numbers?utm_source=hashnode&utm_medium=feed)

[Feb 17, 2023](https://hashnode.com/posts/leetcode-129-sum-root-to-leaf-numbers/63ef891f264e358a1d154312)

### [\[LeetCode\] 650. 2 Keys Keyboard](https://blog.weilincheng.com/leetcode-650-2-keys-keyboard?utm_source=hashnode&utm_medium=feed)

Python | Greedy

2 min read · [blog.weilincheng.com](https://blog.weilincheng.com/leetcode-650-2-keys-keyboard?utm_source=hashnode&utm_medium=feed)

[Mar 23, 2022](https://hashnode.com/posts/leetcode-650-2-keys-keyboard/623b38287753c274c2ab5507)

### [\[LeetCode\] 461. Hamming Distance](https://blog.weilincheng.com/leetcode-461-hamming-distance?utm_source=hashnode&utm_medium=feed)

Python | Bit Manipulation

2 min read · [blog.weilincheng.com](https://blog.weilincheng.com/leetcode-461-hamming-distance?utm_source=hashnode&utm_medium=feed)

[Feb 7, 2022](https://hashnode.com/posts/leetcode-461-hamming-distance/6200bd32295d276006775c2e)

### [\[LeetCode\] 438. Find All Anagrams in a String](https://blog.weilincheng.com/leetcode-438-find-all-anagrams-in-a-string?utm_source=hashnode&utm_medium=feed)

\[Python\] HashMap | Sliding Window

3 min read · [blog.weilincheng.com](https://blog.weilincheng.com/leetcode-438-find-all-anagrams-in-a-string?utm_source=hashnode&utm_medium=feed)

[Feb 2, 2022](https://hashnode.com/posts/leetcode-438-find-all-anagrams-in-a-string/61fa532e98d3a620773e444e)