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FAANG & Big Tech
Google interview preparation
Coding interview practice for Google-style rounds: graphs, strings, DP — and explaining your thinking.
Mock interviews
The interview process (as widely described)
- Online assessment or recruiter screen (for campus hiring, often an online coding test).
- Technical phone / video screen — one or two coding problems in a shared document.
- Onsite / virtual loop — usually 4–5 interviews: mostly coding and algorithms, plus a "Googleyness & leadership" (behavioural) round. Senior roles add system design.
- Hiring committee reviews all feedback before an offer.
What they look for
- Problem solving out loud: clarify the problem, discuss approaches and trade-offs, then code.
- Clean, correct code without an IDE, plus testing your own code with examples and edge cases.
- Complexity analysis — know the time and space cost of what you write.
How to practise here
Do the problems below in order, timing yourself (25–30 minutes each). Then take the mock interview: 2 problems in 45 minutes. Explain your approach in a comment at the top of your code — it builds the habit.
Coding problems to master for Google
0 of 15 solved · solve them on Skills101 with our live judge.
- Two Sumeasy
- Longest Substring Without Repeating Charactersmedium
- Number of Islandsmedium
- Merge Intervalsmedium
- Word Breakmedium
- Course Schedule (Cycle Detection)medium
- Median of Two Sorted Arrayshard
- Trapping Rain Waterhard
- Edit Distancemedium
- Word Ladderhard
- Serialize and Deserialize Binary Treehard
- Longest Increasing Subsequencemedium
- Minimum Window Substringhard
- Kth Largest Element in an Arraymedium
- Pacific Atlantic Water Flowmedium
Google interview experiences
No experiences shared yet for Google.
Sat the Google interview? Share your experience — it helps your juniors (+20 XP).
Skills101 is not affiliated with Google. All questions are original, written in the style of the commonly reported pattern. Hiring processes change — always follow the official Google careers page and your test invitation.