Online assessment:
two questions, need to finish within 1 hour.

• the core idea is two sum, with a long description to describe the scenario
• https://leetcode.com/problems/partition-labels again with a long description

Phone screen:

• basic sorting question. Easy level.

Round 1:

• 30+ min behavior questions
• https://leetcode.com/problems/word-ladder-ii (in 20 min?)
• Q&A 5-10 min

Round 2:

• behavior questions
• https://leetcode.com/problems/best-time-to-buy-and-sell-stock If there is a tie, then return the minimum days to finish the transaction. Example: [1 2 3 1 3], we can buy at index 0 and sell at 2, the profit is 2. but we can also buy at index 3 and sell at 4 which only takes 2 days. So return [3, 4]

Round 3:

• 30 min behavior questions
• describe the differences between Set, Map, Array, List and which data structure should be used with different scenarios
• check if parentheses are valid. For example: (()()) - true, ()) - false

Round 4:

• 60 min behavior questions

Behavior question
Amz leadership principles, really general and the interviewer may ask you focus on some specific deatails when you talk about about the experience and project:

• how to handle conflict
• tight deadline
• leadership in the team/project
• what aspects would you improve if you do it again

some update about your confusions

• level - sde2
• I was told it would be 5 rounds, but instead 4 only
• there was no round specific for system design question, it surprised me as well.
• but there were 1 round interviewer asked some in depth questions about the architecture. also asked about api design. opended ended based questions related to the projects I have done
• not the position in Seattle/bay area