Google Software Engineer Coding & Algorithms Interview Questions
Practice 178 real Coding & Algorithms interview questions for Software Engineer roles at Google.
"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."
"Legit the only resource you need. TC went from 180k -> 350k. Just memorize the top 50 for your target company and you're golden."
"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."
Most Active Users in a Live Communication Stream
This question tests practical application of hash-based data structures and stream processing to track and rank user activity with deduplication logic...
Determine if a 14-tile hand is winning
You are given an integer array tiles of length 14 representing a Mahjong-like hand. Each integer is a tile value from 1 to 9 (single suit). You may re...
Solve three coding interview problems
You are given three independent coding questions. 1) Decode an encoded string Given an encoded string s, decode it using the following rule: - Pattern...
Deterministic Task Execution Order
Deterministic Task Execution Order A build system runs n tasks labeled 0, 1, ..., n - 1. Some tasks depend on others: a dependency [a, b] means task a...
Design server allocation for multi-type nodes
Design a service to manage a large pool (about 100, 000) of server nodes. Each node can satisfy multiple instance types; clients call getServer(reqNum...
Find Maximum Envelope Nesting
This question evaluates algorithmic problem-solving skills, particularly reasoning about multi-dimensional ordering, sequence optimization, and time-c...
Solve order-statistics and XOR-triplet problems
This multi-part question evaluates skills in order-statistics and efficient counting for array inversion-like problems, alongside bitwise manipulation...
Solve checksum and dependency debugging tasks
This question evaluates skills in string processing, modular arithmetic-based checksum computation and mapping, plus debugging of feature enablement l...
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...
Compute decayed power levels in a graph
This question evaluates knowledge of graph algorithms and distance-based propagation, testing concepts such as shortest-path distance computation, mul...
Group movies via graph traversal
You are given n movies labeled 0..n-1 and a list of undirected pairs (a, b) meaning movies a and b are similar. Group all movies into categories where...
Maximize Boundary-Difference Subarray Sum
Given an integer array nums and an integer k, find the maximum possible sum of a non-empty contiguous subarray whose first and last elements differ by...
Solve Two Array Optimization Problems
You are given two coding problems from the same interview round. Problem 1: Split a gold chain fairly An array weights represents the weights of conse...
Assign meetings to rooms with delays
This question evaluates skill in scheduling algorithms, priority queue and heap usage, greedy decision-making, and time-based event simulation for man...
Compute minimax grid path and network delay
This question evaluates algorithmic problem-solving in shortest-path and path-optimization contexts, specifically minimax pathfinding on a grid and si...
Determine whether two nodes are related
This question evaluates understanding of graph representations, reachability and connectivity concepts for ancestry relationships, including handling ...
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...
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...
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...
Find largest subset sharing a common digit
You are given an array nums of length N (1 ≤ N ≤ 100). Every element is a two-digit integer between 10 and 99 (inclusive). Select as many elements as ...