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Learn about the Fenwick Tree or Binary-Indexed Tree data structure, which allows you to perform range sum queries and point updates in just O(log n) time. In this video, we compare it to other approaches (prefix sum, naive loop) to motivate the benefits of…

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Chapters:
0:00 Intro
1:22 Variable
15:27 If & Else
30:41 List
42:31 For Loop
55:08 Range()
1:10:04 Double…

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