Meta Coding & Algorithms Interview Questions
Preparing for Meta Coding & Algorithms interview questions requires focusing on algorithmic problem solving, writing production-minded code, and communicating tradeoffs under time
"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."
Solve maze reachability and two follow-ups
You are given three independent coding tasks. 1) Maze reachability with “rolling ball” movement Given an m x n grid maze where 0 means empty and 1 mea...
Compute Range Sum Quickly
Given an integer array nums and two indices left and right (inclusive), return the sum of the elements from nums[left] to nums[right]. You should disc...
Find Maximum Unique-Character Subset
Given a list of words, choose a subset such that no character appears more than once across the entire chosen subset. Return one optimal subset, not j...
Implement an Expiring Record Store
Implement a level-based in-memory record store. The store contains records identified by a string key. Each record contains fields, where each field i...
Solve Tree Views, Columns, and Calculator
The interview note referenced three separate coding tasks. Solve each task independently. Task 1: Binary tree side views Given the root of a binary tr...
Compute sparse dot product and count islands
You are asked to solve two coding problems. Problem 1: Sparse vector dot product Given two vectors A and B of the same length n (potentially large, e....
Solve maze tasks and compute shortest routes
You are given two coding exercises from an interview loop. Problem A: Incremental “maze” codebase tasks (AI-assisted) You inherit an existing codebase...
Find top-K frequent elements in a stream
You receive a large stream of items (e.g., integers or strings) that may not fit in memory. Design an algorithm that can return the top K most frequen...
Implement solutions to several coding tasks
You are given several independent coding interview tasks. Solve each with the required time/space complexity. Problem 1: Find the minimum in a rotated...
Remove minimum invalid mixed brackets
Given a string s containing letters and bracket characters from the set (), [], {}, remove the minimum number of bracket characters so that the result...
Implement weighted random sampling with preprocessing
Weighted Random Sampling (with performance follow-up) You are given an array of positive weights w[0..n-1]. Implement a data structure that supports: ...
Extend a Maze Solver
You are given an existing Python maze solver and a suite of unit tests. The maze is a 2D grid that uses # for walls, . for open cells, S for the start...
Extend a BFS maze solver stepwise
Maze Solver (4 incremental tasks) You are given an existing codebase for a maze solver that finds a path in a 2D grid. The maze is represented as a re...
Maximize concatenation length with unique chars
Coding: Maximum-length unique-character string You are given an array of strings arr. You may choose any subset of these strings and concatenate them ...
Solve string transform and min-move sorting
Problem 1: "Goat Latin"-style string transformation You are given a sentence s consisting of words separated by single spaces. Transform it into a new...
Deep copy a linked list with random pointers
Problem You are given the head of a linked list where each node has: - val: integer value - next: pointer to the next node (or null) - random: pointer...
Maximize Unique Characters from Words
You are given a list of lowercase English words. Select a subset of the words such that no character appears more than once across all selected words....
Implement a Streaming VMStat Alert
Write a command-line program that reads a continuous stream of vmstat-style output from standard input and raises an alert based on a sliding time win...
Solve delimiter and CSV tasks
The interview included two coding tasks: 1. Validate bracket sequences. Given a string consisting only of the characters (, ), [, ], {, and }, determi...
Find balanced subarray and increasing tree path
You are given two coding problems. Problem 1: Longest balanced subarray (0/1) Given an integer array nums of length n where each element is either 0 o...