LeetCode: Min Sub and Max Sub Problems
1. 求 min/max sub-array 或 sub-string 问题的套路
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Python: Quick Sort Revisited / Relation To BST / Lomuto Partition Scheme / Hoare Partition Scheme
参考 Quicksort with Python
Python: Heaps
参考:
Python: Heap Select / Quick Select
Question: Find the $k$-th Smallest Element in an Unsorted Array
Python: itertools.groupby() and pd.DataFrame.groupby() are different!
Looks like I’ve been wrong for years… maybe because I am too familiar with the SQL-style groupby operation.
Python: Vanilla $k$-way Merge Implementation & Lexical Order
$k$-way Merge ($k$ 路归并)
Python: and/or Operators on Objects
今天才发现如果是两个 objects 做 and 或者 or 的时候，返回的不是 boolean 而是 object。
Python: Bitwise Inverse Operator vs Complements vs Nagatives
参考 Stack Overflow: How does the bitwise complement operator (~ tilde) work? Answer by Anthony。
What does effect size mean in GWAS?
这 statistics 和 biology 搁一块儿简直就是灾难：各种不讲人话的、侧面描述的、不给数学公式的定义，各种 overloaded terminology。好嘛，这又来一个 effect size。