Why Data Structure and Algorithm is needed for coding ? Where can i learn Data Structure and Algorithm can you suggest a book?

Will it be very hard to solve problem without knowing data structure and algorithm ?

I would suggest Competitive Programming 3 for DSA.
And yes, it will be hard(Impossible?) to solve problems without Data Structures and Algorithms.

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And why would you create a separate thread for this. Do take a moment to look at the similar posts column on the right side of your screen before posting anything.

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