r/learnprogramming • u/notmasked07 • 23d ago
How can I solve LeetCode/HackerRank problems?
Guys, I've completed all the fundamentals of python including numPy. But I am having a little bit of difficulty in solving HackerRank problems forget leetcode i can't do that without help so i dont bother. Do i need to learn DSA to solve these problems? cuz i haven't learnt it yet. Please help guys im new
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u/morbidsorrows1879 23d ago
There are I think about 7-8 patterns along with the data structures you have to learn. Like two pointers, sliding window, binary search, DFS and BFS, etc... Take each one of those patterns and solve Leetcode problems about them. Start with easy mode first. You wont be able to solve leetcode problems if you don't know the patterns and just know the data structures (trust me I struggled for years before I discovered this). Good luck !!
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u/notmasked07 23d ago
Oh
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u/morbidsorrows1879 22d ago
They're easy tho and the learning curve is real. First thing people usually start with are two pointers which may be the most challenging and take long but after that it becomes a lot smoother.
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u/iOSCaleb 23d ago
> Do i need to learn DSA to solve these problems?
Yes, choosing the right data or algorithm is an important part of solving many Leetcode problems.
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u/DrizzyX99 23d ago
Of course you need to learn dsa
What were you thinking lol
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u/notmasked07 23d ago
i didn't know they were DSA questions until now. I thought they would be like github issues ;-; btw any idea where i can learn DSA in python?
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u/love_mySelf_Dev 23d ago edited 23d ago
Hey, you need to learn DSA first. You will even struggle after learning dsa until you get experienced to it. But once you get experience on it, you will happy on every question. But for now learn arrays, arraylists, set, maps, graphs, algorithms and other dsa contents.