The interviewer introduced the scenario as analyzing visitor behavior in a product dashboard. The question was Shortest Visitor Window With Enough Categories: https://www.chillinterview.com/learn/coding-interview-questions/shortest-visitor-window-with-enough-c...
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I applied for a software engineering internship at Amazon. My interview experience consisted of two virtual onsite interviews. **Virtual Onsite 1:** My first interview was with an interviewer who didn't talk much but was a good person. It was structured as 30...
Example 1: Input: numCourses = 2, prerequisites = [[1,0]] Output: true Explanation: There are a total of 2 courses to take. To take course 1 you should have finished course 0. So it is possible. Example 2: Input: numCourses = 2, prerequisites = [[1,0],[0,1]] O...
### Chat billing calculation You are building a billing component for a chat-based AI platform that charges users based on token usage. Each chat session generates a record containing: user_id, input_tokens, output_tokens, plan You are given a list of chat ses...
