It took me a day to solve the HackerRank question on AVL Tree. I was unable to compare the height difference and the rotation part confused me yesterday. Today I watched lecture on AVL Tree by Abdul Bari and damn I felt like I should have watched it sooner.
I also want to mention that I've started reading the book called "Grokking Algorithms" by Aditya Y. Bhargava. The illustrations really make it quite interesting to read. I have planned to finish it by 31st December,2020 along with getting the golden badge on HackerRank. Once, I'll complete DS from this site, I would move to LeetCode and will start with Codeforce CP. A lot to do next year. Quite a challenge. Let us see how it goes.
Merry Christmas! (I still find Santa fascinating.)
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