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."
Implement SQL Table and DNA Ordering
Two independent coding exercises were asked. Solve both. Problem A: CSV-backed in-memory table Build a tiny in-memory relational table initialized fro...
Find conflicting pair using black-box run()
This question evaluates algorithm design and query-complexity reasoning, focusing on efficient search strategies for identifying an interacting pair v...
Parse Requests and Compute Balances
This question evaluates input parsing, state management, data validation, and use of basic data structures to track user accounts, friend relationship...
Compute an Exact Factorial
Compute an Exact Factorial Implement factorial(n) and return the exact integer value of n!. 0! is defined as 1. The input is always a valid nonnegativ...
Simulate and Construct Tournament Rankings
You are given a single-elimination tournament represented by an array of ranks. The array is a permutation of the integers 1..n, where a smaller numbe...
Find Dictionary Matches for a Jammed String
This question evaluates string-processing and pattern-matching skills, specifically run-length grouping of consecutive characters and efficient dictio...
Find the Critical Path
You are given a project represented as a directed acyclic graph of tasks. Each task has: - a unique task name - a list of prerequisite task names - a ...
Count players reaching end with moving watchers
This question evaluates skills in discrete-event simulation, stateful time-step modeling, and range coverage by moving agents, as well as algorithmic ...
Solve Two Coding Interview Problems
You are asked to solve two independent coding problems. Problem 1: Evaluate Nested Math Expressions Implement a function that evaluates a string expre...
Solve Dependency, Prefix, and Cache Problems
Solve the following three coding problems. Problem 1: Determine Whether All Tasks Can Be Completed You are given numTasks, the number of tasks labeled...
Implement Memory-Efficient Document Undo/Redo
This question evaluates data structure design and algorithmic reasoning for implementing memory-efficient undo/redo semantics on a key-value document,...
Reconstruct a binary tree from traversals
This question evaluates understanding of binary tree traversal properties, data structure manipulation, and algorithmic complexity involved in reconst...
Render Overlapping Rectangles on an ASCII Canvas
Render Overlapping Rectangles on an ASCII Canvas Implement render_canvas(width, height, rectangles). The canvas initially contains spaces and is retur...
Implement Disease and Friend Snapshot Models
You are asked to solve two independent coding problems. Problem 1: Simulate disease spread on a contact graph There are n people labeled 0 through n -...
Solve Five Coding Problems
This problem set evaluates proficiency in core algorithms and data structures, including graph traversal and connected-component identification, array...
Compute Infection Time in a Grid
This question evaluates competence in grid-based graph traversal and simulation of propagation dynamics, focusing on state management, time-step model...
Minimize time for two handlers
This question evaluates algorithmic optimization skills and stateful scheduling reasoning, focusing on task assignment trade-offs and cumulative cost ...
Find Shortest Wiki Click Path
Implement a function that computes the minimum number of clicks needed to navigate from one wiki page to another. You are given two page URIs, start_u...
Implement a Word Guessing Game
Implement a four-letter word guessing game. You are given: - A dictionary containing valid four-letter English words. - A target word selected from th...
Design structure for bottom-K customers by revenue
This question evaluates data structure design and algorithmic complexity for dynamic order-statistics and update operations, focusing on maintaining c...