Lenskart Interview Experience for Application Developer

I had recently given Interview at Lenskart.com for Application Developer

First Round

Telephonic with HR on some basic stuff.

Next was the round where i was given some below questions

Q1. Given 2 arrays of integers,find whether they will form the same binary search tree.
Exp :- 2,1,3 and 2,3,1 will form the same binary search tree.

Q2. Given a dictionary of words, find all possible sentences that can be formed from a string with no spaces.

   Exp : Iamcoolguy 
 Answer: I am cool guy. 

Q3. Write a code to find all subsets of a given set:-
Exp: {1,2,3} will give {1},{2},{3},{1,2},{1,3},{2,3},{1,2,3}

Q4. Design a parking lot

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