Google Software Engineer Interview Questions
Google Software Engineer interview questions typically test core algorithmic problem solving, clean coding under time pressure, and — for mid-to-senior levels — system design and scalability thinking. The process is multi-stage: a recruiter screen followed by one or two timed technical screens (often live coding on a shared Google Doc), then a virtual or onsite loop with several 45-minute interviews that mix coding, design (L4/L5+), and behavioral “Googleyness” assessments. Interviewers evaluate general cognitive ability, role-related technical depth, leadership, and culture fit, and candidates should expect iterative feedback and a hiring-committee review before team matching. ([leetcopilot.dev](https://leetcopilot.dev/blog/google-coding-interview-guide-2026?utm_source=openai)) For interview preparation focus on timed practice of data-structures and algorithms, simulate coding on Google Docs, and prepare concise STAR-style stories that show impact and collaboration; senior candidates must add targeted system-design drills that discuss trade-offs, reliability, and scaling. Allow several weeks of structured practice, rehearse clear verbal explanations, and be ready to ask clar
"I got asked a hardcore MCM DP question and I saw it on PracHub as well. Solved that question in 5 minutes. Without PracHub I doubt I could solve it in 5 hours. Though somehow didn't get hired, perhaps I guess I solved it too fast? /s"
"Believe me i'm a student here jn US. Recently interviewed for MSFT. They asked me exact question from PracHub. I saw it the night before and ignored it cause why waste time on random sites. I legit wanna go back and redo this whole thing if I had chance. Not saying will work for everyone but there is certainly some merit to that website. And i'm gonna use it in future prep from now on like lc tagged"
"10 years of experience but never worked at a top company. PracHub's senior-level questions helped me break into FAANG at 35. Age is just a number."
"I was skeptical about the 'real questions' claim, so I put it to the test. I searched for the exact question I got grilled on at my last Meta onsite... and it was right there. Word for word."
"Got a Google recruiter call on Monday, interview on Friday. Crammed PracHub for 4 days. Passed every round. This platform is a miracle worker."
"I've used LC, Glassdoor, and random Discords. Nothing comes close to the accuracy here. The questions are actually current — that's what got me. Felt like I had a cheat sheet during the interview."
"The solution quality is insane. It covers approach, edge cases, time complexity, follow-ups. Nothing else comes close."
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"PracHub Premium for one month cost me the price of two coffees a week. It landed me a $280K+ starting offer."
"Literally just signed a $600k offer. I only had 2 weeks to prep, so I focused entirely on the company-tagged lists here. If you're targeting L5+, don't overthink it."
"Coaches and bootcamp prep courses cost around $200-300 but PracHub Premium is actually less than a Netflix subscription. And it landed me a $178K offer."
"I honestly don't know how you guys gather so many real interview questions. It's almost scary. I walked into my Amazon loop and recognized 3 out of 4 problems from your database."
"Discovered PracHub 10 days before my interview. By day 5, I stopped being nervous. By interview day, I was actually excited to show what I knew."
"I recently cleared Uber interviews (strong hire in the design round) and all the questions were present in prachub."
"The search is what sold me. I typed in a really niche DP problem I got asked last year and it actually came up, full breakdown and everything. These guys are clearly updating it constantly."
Implement an LRU cache
Design a key-value cache with a fixed capacity. It must support: - get(key): return the value for the key if it exists, otherwise return -1. - put(key...
Determine Reporting Relationships
Build an in-memory organization model that supports three operations on employee IDs: 1. add_manager(a, b): employee a is the direct manager of employ...
Design Tic-Tac-Toe With K Players
Design and implement a Tic-Tac-Toe game engine. You are given: - k players, each with a unique player ID or mark. - An n x n board, initially empty. -...
Find cheapest common ancestor in a tree
This question evaluates understanding of tree data structures and ancestor concepts (such as lowest common ancestor) along with algorithmic skills for...
Check pivot after removing one element
This question evaluates array-manipulation skills, cumulative-sum/prefix-sum reasoning, and robustness in handling negative values and duplicates, tes...
Build a next-word frequency predictor
This question evaluates understanding of data structures and algorithms for frequency counting and associative lookups, including preprocessing-versus...
Compute minimum number of rooms needed
Problem You are given a list of meetings, each with a start time and end time. A single room can host only one meeting at a time. Two meetings overlap...
Min deletions to avoid overlap in first k
This question evaluates array and sequence manipulation skills, set-based reasoning about value overlap, and the ability to compute minimal edits whil...
Validate parent array forms a tree
Problem You are given an integer array parent of length n describing a directed parent pointer for each node i (nodes are labeled 0..n-1). - parent[i]...
Detect and remove matched words in a char stream
This question evaluates understanding of online stream processing, substring matching, and the use of efficient data structures and algorithms for rea...
Implement Batched Undo/Redo Layer
You are implementing a simplified document layer for a design tool. The layer stores properties as a map<string, string>. Implement a class that suppo...
Implement Longest-Match Text Replacement
You are given a text string and a dictionary of replacement entries. Each dictionary entry has the form token:id, where token is a string pattern and ...
Find best-matching binary pattern with wildcards
This question evaluates pattern-matching and string-algorithm skills, including handling wildcards and variable-length matches, priority-based rule se...
Find top/bottom-k words in list or stream
You are given words (strings) either as a finite list or as an unbounded stream. 1) List version: Given an array words and an integer k, return: - the...
Return top-k subset sums in descending order
This question evaluates proficiency in combinatorial reasoning, algorithmic optimization for large search spaces, and efficient extraction of top-k va...
Design a logger that returns top-K messages
This question evaluates skills in designing in-memory data structures and algorithms for frequency counting and interval querying, including extractin...
Find shortest subarray with at least k distinct
This question evaluates proficiency in array manipulation, frequency counting, and efficient tracking of distinct values within contiguous subarrays, ...
Find shortest subarray with ≥k distinct integers
This question evaluates understanding of array algorithms, handling of distinct-element counting, and the ability to design time- and space-efficient ...
Answer parity-alternation range queries
This question evaluates a candidate's ability to reason about array properties and design efficient range-query processing for alternating-parity suba...
Find median of merged RLE arrays
The question evaluates understanding of run-length encoding, order-statistics (median) computation, and efficient merging of frequency-annotated seque...