Booking | 码农类General | Interview Experience
Interview Date: Not specified
Result: Not specified
Difficulty: Not specified
Interview Process
The interview consisted of multiple rounds focusing on data structures and algorithms. Candidates were presented with various problems that required both logical thinking and coding skills. Each round lasted approximately 30-45 minutes, with a mix of theoretical questions and practical coding exercises.
Technical Questions
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Prefix Sum
Given an integer array and a starting value, find the minimum starting point such that a certain “cumulative condition” is always satisfied. The core idea is to scan the array and maintain the minimum prefix sum. Time complexity is O(n). -
Shortest Steps with Two Operations
Determine the minimum number of steps to convert one integer to another using only two operations (e.g., “subtract one” and “multiply by two”). This problem emphasizes reverse thinking and can be solved using either a greedy approach or BFS. -
Interval Flipping with Difference Array
Perform multiple flips on a certain interval and finally count the indices that meet the given condition. The efficient approach involves using a difference array to mark interval changes, followed by prefix sums to determine odd/even states. -
Graph Traversal / DFS Path
Given an undirected graph or connectivity relations, identify which path corresponds to a depth-first traversal. This question tests understanding of DFS stack order, node access control, and backtracking logic.
Tips & Insights
- Focus on understanding the underlying principles of each algorithm rather than just memorizing solutions.
- Practice coding problems on platforms like LeetCode and HackerRank to familiarize yourself with common question types.
- Pay attention to edge cases and ensure your solutions handle them gracefully.