Google Coding Interview Questions (2026)
Most-reported questions and how to practice them
2,325 coding questions reported by candidates for Google, sorted by how often they were reported. Source: community-sourced LeetCode company lists.
What the Google question data shows
Of the 2,325 questions reported for Google, 52% are medium, 22% are hard and 26% are easy. The most reported are Two Sum, Add Two Numbers, Longest Substring Without Repeating Characters, Median of Two Sorted Arrays, Longest Common Prefix.
This list comes from community-sourced LeetCode company lists. It covers coding questions only. It does not tell us how many rounds Google runs, what each round covers, or what it pays, and those change by role, level and team, so we do not list them. Ask your recruiter what each round covers, and check the company's careers page.
Prepare for the rest of the loop with the coding interview patterns guide, the system design framework, and the STAR method guide. Written by Kieron.
Google Interview Questions
2325 LeetCode questions — sorted by frequency. Question frequency is community-sourced from public interview reports and may not reflect the current process; verify details with the employer.
Last reviewed: September 5, 2026 · Source: LeetCode company-wise interview questions (community reports) · Reviewed by the Aissence Editorial Team.
Two Sum
Add Two Numbers
Longest Substring Without Repeating Characters
Median of Two Sorted Arrays
Longest Common Prefix
Trapping Rain Water
Longest Consecutive Sequence
Merge Strings Alternately
Create Hello World Function
Longest Palindromic Substring
Palindrome Number
3Sum
Merge Sorted Array
Best Time to Buy and Sell Stock
4Sum
Valid Parentheses
Search in Rotated Sorted Array
Maximum Subarray
Jump Game
Pascal's Triangle
Tips for Success at Google
Start with the 30 most reported Google questions, then work down the list.
Mediums are the bulk of the list (52%), so spend most of your time there.
Time yourself: 20 to 30 minutes per medium, then explain your solution out loud as if to an interviewer.
After each problem write down the pattern and the signal that revealed it. Patterns transfer to problems you have not seen.
Pair coding practice with a system design framework and prepared behavioral stories; most loops include more than coding.
How to Practice for Google Interviews
Practice answering out loud with an AI interviewer built from your resume and the job description, and get a score and specific fixes for each answer. We are not affiliated with Google, and the mock interview is general practice rather than a simulation of Google's own format.
- ✓ Free mock interview built from your resume and the job description
- ✓ Desktop Interview Copilot for live interviews, where the rules allow it
- ✓ Behavioral practice with feedback on structure and specifics
- ✓ System design practice with follow-up questions
Frequently Asked Questions
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