• 30 min Phone screening (discussion of expectations and introduction)
• 1 hour Code screening (coding task with increasing requirements)
• 2 hours Coding Session (1 hour for 2 puzzles, 1 hour for System Design)
• 2 hours HR / Lead Interview (behavioral / coding)
• CTO / CEO / Head of Department interview

Simulate a stream to output results in the correct sequence. Provide a solution to avoid memory leaks.

Input sequence: 1, 2, 4, 5, 3, 6 Output sequence: 1, 2, 3, 4, 5, 6

Sort strings with Latin letters in Welch alphabetic order.

Find all words in a 4x4 letters matrix. Input: A 4x4 matrix and an abstract dictionary.

Efficiently store data with conditions:

• Store all data elements without duplications (the latest one replaces the first one in case of duplication).
• Avoid memory leaks.
• All operations should have O(1) time complexity.