1st Round: HR contacted and asked 10 rapid-fire technical questions:

• How many bits in octal?
• kill -9 signal
• How to get all instances of a class?
• What is the command in Unix to find IP configuration information?
• Inner join is what out of A union B, A intersect B, and A - B?
• HTTP port number
• SSL full form and its purpose
• Complexity of some search.

2nd Skype Technical Interview: The interviewer called, introduced himself, and told me about Yelp. Then he asked:

1. Why Yelp?
2. What is the most challenging project you have done so far?
3. What were the challenges?
4. What technologies did you use?
5. What did you learn?

Main Technical Question:

Write a function that takes an array of words as input:

input => ['cat', 'star', 'act', 'god', 'arts', 'dog', 'rats']

and returns a sorted array:

output => ['cat', 'act', 'god', 'dog', 'start', 'arts', 'rats']