Round 1:

1. Common Node in 2 Linked List
2. Clone Linked List which has random pointer

Round 2:

1. Spam Filter design
2. LCA of Binary Tree
3. LCA of BST

Round 3:

1. Number between twin primes is divisible by 6 or not. Proove it
2. Question on Threads
3. Scheduler Design

Round 4:

1. Detect Misspelled localities from the 1000s of given addresses
2. Data structure design for ‘Auto complete feature for search of file names’
3. A 2D matrix of size mxn is given. User will select 4 positions in matrix. Determine those positions are contiguous or not. Contiguous can be in terms of Row-wise, column-wise, diagonal-wise.

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