Four rounds of 45-minute technical interviews.

45-minute lunch.

They asked about iOS knowledge, algorithms with trees, and matrices. The matrix question was the original one from Cracking the Coding Interview. It is in Mountain View.

The difficulty was not as hard as I thought before, and they were very nice.

First Round:

• iOS questions about delegates, method swizzling, and others.
• A question about chunk palindromes.

Second Round:

• Get common elements from two trees.
• Design a tree class and its functions.

Third Round:

A matrix problem from the book Cracking the Coding Interview.

Fourth Round:

• Basic iOS questions.
• A very easy question.