Typical algorithms and coding interviews require that you know your data structures and algorithms well. You have to write working code that compiles and runs. You may also get software design questions. However, overall, these interviews were still easier than interviews at Facebook or Twitter.

The interview process itself was extremely slow. Generally, other companies respond within 3-4 days if they are interested. For all of my initial rounds, Uber took a good 7-10 days for every response.

Focus on algorithms such as sorting, searching, and indexing, and their applications to problems. A revision of your graph theory course may be helpful.