Interview Questions
Practice the exact questions companies are asking right now.
Questions
9.8k
Companies
511
Updated
08.16.2026
9.8k Questions 511 Companies08.16.2026
PLTCHK
"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"
_The_TaNk_
"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"
ChrisSenior SWE, LinkedIn
"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."
sleepy33
"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."
JakeSenior ML Engineer, Lyft
"Got a Google recruiter call on Monday, interview on Friday. Crammed PracHub for 4 days. Passed every round. This platform is a miracle worker."
nuggetlord
"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."
CarlosFull Stack, Shopify
"The solution quality is insane. It covers approach, edge cases, time complexity, follow-ups. Nothing else comes close."
boba.tea.vibes
"Legit the only resource you need. TC went from 180k -> 350k. Just memorize the top 50 for your target company and you're golden."
AndySWE-II, Google
"PracHub Premium for one month cost me the price of two coffees a week. It landed me a $280K+ starting offer."
couchpotato99
"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."
ShrutiData Engineer, Salesforce
"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."
midnightramen
"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."
BiancaFrontend Eng, Figma
"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."
tambrahm007
"I recently cleared Uber interviews (strong hire in the design round) and all the questions were present in prachub."
toa
"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."
Showing 20 results
Role
Medium
Machine Learning EngineerOptimize repeated-value vectors and compute exclusive times
You are given two separate coding tasks from an interview. Task 1: Optimize storage for vectors with repeated values, then compute dot product You are...
Coding & Algorithms
3
0
49 people solved
Oct 30, 2025
Medium
Software EngineerMerge multiple sorted arrays using min-heap
Problem You are given k sorted arrays of integers: - arrays[0], arrays[1], ..., arrays[k-1] - Each arrays[i] is sorted in non-decreasing order. - The ...
Coding & Algorithms
4
0
51 people solved
Oct 28, 2025
Medium
Software EngineerReverse linked list in fixed-size groups
Problem You are given the head of a singly linked list and an integer k (k >= 1). Reverse the nodes of the list in-place in groups of size k: - The no...
Coding & Algorithms
4
0
58 people solved
Oct 28, 2025
Medium
Software Engineer LockedFind shortest unique substring per word
This question evaluates string-processing and algorithmic problem-solving skills, focusing on identifying substrings unique to each word while handlin...
Coding & Algorithms
11
0
86 people solved
Oct 27, 2025
Easy
Data AnalystCompute percent of first-cancel users who never return
You’re analyzing appointment behavior for a scheduling product. Table appointments - appointment_id (STRING, PK) - user_id (STRING) - scheduled_start_...
Data Manipulation (SQL/Python)
3
0
25 people solved
Oct 26, 2025
Medium
Machine Learning EngineerCheck if adding edge creates cycle in digraph
You work with a system that stores items and directed relationships between them (for example, item A points to item B). The relationships form a dire...
Coding & Algorithms
7
0
61 people solved
Oct 26, 2025
Easy
Data ScientistMatch payments to invoices by memo or amount
Scenario You are building a small reconciliation tool that matches payments to invoices. Data structures Assume you are given: - invoices: a list of i...
Coding & Algorithms
8
0
57 people solved
Oct 25, 2025
Medium
Software Engineer LockedDetect Winners in Nested Tic-Tac-Toe
This question evaluates board-evaluation and pattern-detection skills, modular decomposition for reusable logic, and the ability to reason about time ...
Coding & Algorithms
0
0
15 people solved
Oct 24, 2025
Medium
Software EngineerCount binary search steps for specific keys
You have the sorted array: [22, 34, 55, 77, 89, 93, 99, 102, 120, 140] Using standard binary search with low and high indices and mid = floor((low + h...
Software Engineering Fundamentals
4
0
33 people solved
Oct 24, 2025
Medium
Software EngineerDetect impossible binary search comparison sequence
Consider binary search on a sorted array of numeric keys. The following options list possible sequences of key values that the algorithm might compare...
Software Engineering Fundamentals
4
0
33 people solved
Oct 24, 2025
Medium
Software EngineerChoose best prompt for AI code debugging
When using AI tools such as ChatGPT to help debug code, which prompting approach is generally most effective? Options: - A. Directly paste the complet...
Software Engineering Fundamentals
2
0
50 people solved
Oct 24, 2025
Medium
Software EngineerIdentify incorrect statement about primary keys
In a relational database, which of the following statements about primary keys is incorrect? Options: - A. Every column that is part of the primary ke...
Software Engineering Fundamentals
2
0
28 people solved
Oct 24, 2025
Medium
Software EngineerEvaluate C for-loop execution count
In C, variables m and n are both of type int. Consider the following code: `c int m, n; for (m = 0, n = -1; n = 0; m++, n++) n++; ` In standard C ...
Software Engineering Fundamentals
2
0
32 people solved
Oct 24, 2025
Medium
Software EngineerAnalyze TCP three-way handshake states
During TCP connection establishment (the three-way handshake), exactly one of the following statements is correct. Identify which one, and be prepared...
Software Engineering Fundamentals
2
0
37 people solved
Oct 24, 2025
Medium
Software EngineerFind shortest subarray with range ≥ k
Problem You are given an integer array nums of length n and an integer k. Define the range of a subarray as: \[ \max(\text{subarray}) - \min(\text{sub...
Coding & Algorithms
3
0
34 people solved
Oct 23, 2025
Medium
Software EngineerFind all unique triplets summing to zero
Problem Given an integer array nums, return all unique triplets [nums[i], nums[j], nums[k]] such that: - i, j, and k are distinct indices (i != j != k...
Coding & Algorithms
5
0
47 people solved
Oct 23, 2025
Hard
Software EngineerAnswer key behavioral prompts effectively
Prepare responses for these behavioral prompts: 1. Proudest project: Describe the project you’re most proud of and why. 2. Conflict: Tell me about a t...
Behavioral & Leadership
2
0
23 people solved
Oct 21, 2025
Hard
Software EngineerSolve common array/string/linked-list tasks
You may be asked one or more of the following independent coding tasks. For each task, implement an efficient algorithm and clearly state time/space c...
Coding & Algorithms
5
0
46 people solved
Oct 21, 2025
Easy
Data ScientistCompute win probability in coin-toss game
Two players, A and B, play the following game with a fair coin: - They toss the coin alternately: A tosses first, then B, then A, then B, and so on. -...
Coding & Algorithms
2
0
45 people solved
Oct 21, 2025
Medium
Software EngineerValidate parentheses with one or three bracket types
Problem Given a string s consisting only of bracket characters, determine whether it is valid. A string is valid if: - Every opening bracket has a cor...
Coding & Algorithms
5
1
65 people solved
Oct 20, 2025