What to prepare:

• Dhruv's take
• Ravi's take

Algorithms:

• Linked lists, stacks and queues, sorting, trees and search, hash tables, graphs, strings, dynamic programming
• Textbooks: CLRS, Algorithms by Sedgewick
• Sedgewick's Algorithms's courses on Coursera.
• Cracking the Coding Interview
• Programming Interviews Exposed
• LeetCode

When to prepare:

• Dhruv's take
• Ravi's take

How to prepare:

• Solving on whiteboards
• Attitude
• Resume and projects