Google LeetCode Questions Frequency Wise: 247+ Problems Asked in 2024-2025
Looking for Google LeetCode questions frequency wise to ace your coding interview? You're in the right place. This data-driven guide analyzes 247 LeetCode problems asked in actual Google interviews between 2024-2025, sorted by frequency, difficulty, and acceptance rate. Whether you're targeting Google SWE, L4, or senior roles, you'll find the exact questions asked multiple times, organized by topic (Arrays, Dynamic Programming, Graphs), so you can focus on high-ROI problems instead of grinding random questions.
Most Frequently Asked LeetCode Questions in Google Interviews
The table above shows all 800+ Google coding interview questions LeetCode problems,
but here are the top 50 most frequently asked LeetCode questions in Google
that appeared 10+ times in actual interviews:
High-Frequency Patterns:
Two Sum variants (asked 23 times)
Merge Intervals (asked 19 times)
LRU Cache (asked 17 times)
Longest Substring Without Repeating Characters (asked 15 times)
💡 Pro Tip: These Google LeetCode high frequency questions account for
38% of all technical screens. Master these first for maximum ROI.
Google LeetCode Questions by Difficulty
Google interview LeetCode questions difficulty wise breakdown: 35% Easy, 52% Medium,
13% Hard. Here's how to approach each level strategically:
Easy Questions (For Screening Rounds & Warm-ups)
Google asks 87 easy LeetCode questions primarily for:
Phone screens (65% of easy questions)
Coding assessment warm-ups
Testing problem-solving fundamentals
Top Easy Questions:
Two Sum (Frequency: 23)
Valid Parentheses (Frequency: 12)
Merge Two Sorted Lists (Frequency: 11)
🎯 Target: Solve all easy questions with less than 15 min per problem.
Medium Questions (Most Common in Google Onsite Interviews)
128 medium difficulty problems = 52% of all Google LeetCode questions.
These dominate L3-L5 onsite rounds.
Most Asked Medium Problems:
Merge Intervals (Frequency: 19)
LRU Cache (Frequency: 17)
Word Break (Frequency: 14)
📌 Focus Area: Dynamic Programming and Graph medium problems appear 3x more often.
Hard Questions (For Senior/Staff Levels L6+)
32 hard LeetCode problems asked in Google interviews, primarily for:
Senior SWE (L6+) roles
System design deep-dives
Optimization rounds
Critical Hard Problems:
Median of Two Sorted Arrays (Frequency: 8)
Trapping Rain Water II (Frequency: 6)
Alien Dictionary (Frequency: 5)
⚡ Reality Check: You only need 15-20 hard problems for 90% of Google roles.
Google LeetCode Questions by Topic (Data-Driven Breakdown)
Google leetcode questions topic wise analysis reveals clear patterns.
Focus on these high-yield topics that cover 83% of all Google DSA interview questions:
Arrays & Strings (104 questions - 42% of all problems)
Why it matters: Every Google interview includes at least one array/string problem.
Most Asked Patterns:
Sliding Window (23 questions)
Two Pointers (19 questions)
Prefix Sum (14 questions)
Must-Solve Problems:
Longest Substring Without Repeating Characters (Freq: 15)
Container With Most Water (Freq: 12)
Trapping Rain Water (Freq: 11)
🔑 Quick Win: Arrays have the highest acceptance rate (avg 58%).
Dynamic Programming (57 questions - 23% of all problems)
Google's favorite topic for evaluating algorithmic maturity.
DP Patterns in Google:
1D DP (22 questions)
2D DP Grid (18 questions)
DP on Strings (12 questions)
DP with States (5 questions)
Top DP Problems:
Word Break (Frequency: 14)
Coin Change (Frequency: 11)
Longest Increasing Subsequence (Frequency: 9)
Graphs & Trees (44 questions - 18% of all problems)
Graph questions appear in 76% of Google onsite loops (L4+).
Graph Patterns:
BFS/DFS Traversal (18 questions)
Topological Sort (8 questions)
Union Find (7 questions)
Shortest Path (6 questions)
Critical Tree Problems:
Binary Tree Maximum Path Sum (Frequency: 10)
Serialize and Deserialize Binary Tree (Frequency: 9)
System Design LeetCode Questions (12 questions)
Google asks these design-oriented LeetCode problems for L5+ roles:
LRU Cache (Frequency: 17) ⭐
Design Search Autocomplete System (Frequency: 8)
Design File System (Frequency: 6)
Design In-Memory File System (Frequency: 5)
💡 These overlap with Google's 45-min system design rounds.
Google LeetCode Questions Sorted by Acceptance Rate
Acceptance rate reveals problem difficulty vs. frequency mismatch.
Some "easy" problems have 35% acceptance while some "hard" problems have 68% acceptance.
Why Acceptance Rate Matters for Interview Prep
Strategic insight: High acceptance rate (>65%) = well-defined problem with
clear solution patterns. These are confidence builders for early prep.
Low acceptance rate (< 40%) often means:
Tricky edge cases (not harder logic)
Poor problem statement
Multiple valid approaches
🎯 Recommendation: Start with high-acceptance problems to build momentum.
Top 30 Problems with >70% Acceptance (Quick Wins)
These Google leetcode problems with high acceptance rates are perfect for: