Principle Interview Questions
The questions to prepare for Principle interviews, across all roles. Questions from real interview reports rank first. Updated weekly.
Find the first non-repeating character in a string using frequency counting and a second pass in O(n) time.
PrincipleUse prefix sums and a hash table to find the longest continuous subarray with a given sum in O(n) time.
PrincipleTests linked-list cycle detection strategies and complexity tradeoffs.
PrincipleUse DENSE_RANK and a CTE to find employees earning the third-highest distinct salary in each department.
PrincipleExplain how clustered and non-clustered indexes differ in storage, lookup behavior, and query performance.
PrincipleExplain normalization, why it improves data integrity, and when denormalization is a practical performance tradeoff.
PrincipleRank active HSBC employees by division and return every employee tied for the highest or second-highest salary.
HsbcRank the top 3 completed rides per vehicle per day using joins, a CTE, and ROW_NUMBER.
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Tests designing robust error handling, categorization, logging, and recovery flows for transaction systems.
PrincipleEvaluates your ability to design and explain a Spring-based application end-to-end.
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