Software Engineer Coding & Algorithms Interview Questions
Practice 2,712 real Coding & Algorithms interview questions for Software Engineer roles. From companies including Meta, Amazon, Google, Uber, Microsoft.
"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."
Design a max-stack with efficient operations
Design a max-stack with efficient operations Design a stack that supports push (x), pop(), top(), peekMax(), and popMax(). The popMax operation must r...
Validate IPv4 Address List
This question evaluates proficiency in string parsing, input validation, numeric boundary checks, and algorithmic complexity by requiring verification...
Find Intersections Between Two Interval Lists
Find every non-empty intersection between two sorted lists of disjoint closed intervals. Preserve ascending order and correctly include intersections ...
Find User Airport at a Time
This question evaluates the ability to model and query time-interval flight data for multiple users, testing skills in data structures, sorting and se...
Check Digits and Combine Ranges
You are asked to solve two independent coding tasks. Task 1: Check Whether an Integer Reads the Same Backward Given an integer x, return true if its d...
Solve tree distance and design file system
Solve tree distance and design file system Given a binary tree, find the maximum distance between two 'alive' nodes, where 'alive' nodes are initially...
Match people to questions using tags and priorities
This question evaluates competencies in bipartite matching and combinatorial optimization, along with practical data-structure design for scalable tag...
Implement log storage and querying
Design a data structure to record log entries and support efficient queries. Each log has a timestamp (milliseconds), severity (INFO/WARN/ERROR), serv...
Find top-k frequent elements efficiently
Given an array (or stream) of integers and an integer k, return any ordering of the k most frequent values. Implement a solution using a heap and disc...
Implement deep clone for complex objects
Implement a deep-clone function for nested objects in JavaScript (or a language of your choice) without using JSON serialization or third-party librar...
Solve a two-jug measuring problem
You are given two jugs with capacities x and y liters and an unlimited water source. You may perform these operations: fill a jug, empty a jug, or pou...
Implement Refactoring Assessment Features
This question evaluates proficiency in implementing spec-driven algorithms and data structures in Java, covering route reconstruction (directed graph/...
Consolidate On-Call Rotation Segments
This question evaluates proficiency with interval manipulation, set management, sorting and event ordering, and the use of appropriate data structures...
Solve Three Coding Interview Problems
This set of problems evaluates competency in algorithmic problem-solving, including merging sorted arrays with duplicate elimination, reasoning about ...
Enforce ordered execution across threads
Enforce ordered execution across threads Implement a class with three methods alpha(), beta(), and gamma() that may be called by three different threa...
Compute max team size with a core interval
You are given n employees’ working-time intervals, where employee i works during the inclusive interval [startTime[i], endTime[i]]. You want to form a...
Solve peak element and unique word abbreviation
You are given two independent coding problems to solve. 1) Peak element in an array (binary search) - Input: an integer array nums of length n >= 1. -...
Implement an In-Memory Query Engine
This question evaluates skills in data modeling, API design, algorithmic filtering, and implementation of an in-memory query execution engine, includi...
Compute Plant Infection Time
This question evaluates a candidate's understanding of graph traversal and grid-based state propagation, including concepts like breadth-first search,...
Identify members lacking specialty coverage
Identify members lacking specialty coverage Oscar wants to ensure that every insurance member has adequate access to in-network healthcare providers w...