OLA Interview Experience | Set 6 (For SDE-1)

Last month i was interviewed by Ola for SDE 1 post. Here is my experience.

Round 1
a. Inorder predecessor and successor for a given key in BST

b. String matching where one string contains wildcard characters

Round 2
a. A Boolean Matrix Question

b. Print Left View of a Binary Tree

c. Find the number of islands

Round 3
a. Detailed discussion of my project, complete architecture, how can it be made better. He was listening carefully and was pointing out issues.

b. LRU design – i. Least recently used, and
        ii. Max frequency

Round 4 (Senior Director)

Just normal discussion and he will basically check how involved are you in your job. Just be confident about what you have done.

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