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Grokking the coding interview equivalent leetcode problems


I liked the way Grokking the coding interview organized problems into learnable patterns. However, the course is expensive and the majority of the time the problems are copy-pasted from leetcode. As the explanations on leetcode are usually just as good, the course really boils down to being a glorified curated list of leetcode problems.

So below I made a list of leetcode problems that are as close to grokking problems as possible.

Pattern: Sliding Window

Pattern: Two Pointers

Pattern: Fast & Slow pointers

Pattern: Merge Intervals

Pattern: Cyclic Sort

Pattern: In-place Reversal of a LinkedList

Pattern: Tree Breadth First Search

Pattern: Tree Depth First Search

Pattern: Two Heaps

Pattern: Subsets

Pattern: Modified Binary Search

Pattern: Bitwise XOR

Pattern: Top 'K' elements

Pattern: K-way merge

Pattern: 0/1 Knapsack

Pattern: Topological Sort


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navidre commented Nov 8, 2022

There is a new grokking course on Educative. I am creating a new mapping. Pull requests are appreciated. Link:

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letss goo

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JunYuHuang commented Nov 17, 2022

If you feel bad for the author pay $79 for lifetime access. There is a 20% off coupon so its $63.20.

I bought the course a couple months ago for full price and all I can say is that I regret buying it and feel it was a waste of money. For how much it costs for what is basically a curated LeetCode problem set with solutions, a significant amount of the solutions don't offer much in depth or detailed explanation and some of the solutions fail to pass their closest LC equivalent problems. I've found better solution explanations and help from looking on the Discuss page of those LC problems and watching NeetCode's video solutions.

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Thanks for sharing

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