Google Interview Questions
The questions to prepare for Google interviews, across all roles. Questions from real interview reports rank first. Updated daily.
Aggregate monthly sales totals by product category using JOINs, GROUP BY, and date formatting.
GoogleReplace missing sales fields with defined defaults and return a consistently ordered dataset.
GoogleUse joins, aggregation, and ROW_NUMBER to find the top 3 users per country by total transaction volume.
GoogleCompute daily active users and a 7-day rolling average using a CTE, distinct counts, and window functions.
GoogleProblem Given the head of a singly linked list, reverse the list, and return the new head node. The linked list is defined as follows: python class ListNo...
GoogleImplement a set-like structure using an array and hash map to support insert, delete, and random access in average O(1) time.
GoogleUse a hash map to find two array elements that sum to a target in O(n) time.
GoogleFind the longest substring with all unique characters using a sliding window.
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