Introduction
I had a conversation with the peer after mock interview. One thing we discussed is about the data structure design. He asked me to design and data structure to do insert for a range numbers from array, I quickly thought about binary index tree. And he also said something about interval algorithm.
Algorithm related to binary index tree
It is time for me to look up Leetcode and find the algorithm. I asked the kindergarten adventures on code review stackexchange.com a while ago. It is time for me to learn the algorithm through a simple example.
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