Google

I was asked a hard question, not from LeetCode, in the first round. I passed the first round. Then, the recruiter told me they are not having headcount for the position and won't continue the interview this year.

There's a matrix. Each element in the matrix is a bit (0 or 1). Write a method to reverse this matrix. The matrix is stored in a one-dimensional char array. The length of each row is given.

This is a 45-minute phone interview. The process is: * Go through your resume. * Ask questions about your projects in detail. * Coding questions: one or two questions, depending on your pace. * Ask the recruiter any questions.