Baidu Coding Interview Questions
Baidu problems
Baidu's coding rounds emphasize algorithms at scale: dynamic programming, graphs, and bit manipulation. On-site interviews for domestic roles are often conducted in Chinese. Practicing medium DP and matrix problems plus a few hard graph questions covers the typical ask.
Baidu Interview Loop Structure
- • Master string matching algorithms (KMP, Trie) and multi-dimensional DP
- • Be prepared for rigorous time and space complexity derivations on paper/whiteboard
- • Review distributed computing primitives and multi-threading
4-Week Preparation Strategy for Baidu
Action PlanTo maximize your offer probability at Baidu, avoid random LeetCode grinding. Follow this structured 4-week roadmap tailored to Baidu's specific interview loop and evaluation bar:
Week 1: High-Frequency Patterns
Focus on foundational patterns tested heavily at Baidu: Two Pointers, Sliding Window, and Hash Map frequency tracking. Solve 10–12 Easy/Medium questions and establish code muscle memory without syntax lookups.
Week 2: Advanced Graph & Tree Drills
Master BFS, DFS, Topological Sorting, and Priority Queues (Min/Max Heaps). Practice articulating state transitions and recursion stack depth trade-offs under real-time interviewer pressure.
Week 3: Timed Mock Coding & Complexity
Simulate real 45-minute technical screens. Spend 5 minutes clarifying requirements, 10 minutes discussing brute-force vs optimal trade-offs, 20 minutes coding cleanly, and 10 minutes dry-running boundary test cases.
Week 4: System Architecture & Behavioral STAR
Draft 5 distinct STAR method stories (Situation, Task, Action, Result) mapped to Baidu's core principles. Review distributed systems fundamentals: caching tiers, partitioning, rate limiting, and database consistency models.
💡 What Baidu Interviewers Evaluate:
Interviewers score candidates across 4 independent pillars: Algorithmic Optimality (arriving at optimal Big-O), Code Craftsmanship (modular functions, clean naming, zero syntax debt), Communication & Thinking Out Loud (proactive collaboration, asking clarifying questions), and Edge Case Rigor (null checks, integer overflows, duplicate inputs).
| Problem | Difficulty | Solution | Link | |
|---|---|---|---|---|
| Split Array Largest Sum
#Array
#Binary Search
#Dynamic Programming | Hard | Solution |