Tech Interview Questions

Practice the exact questions companies are asking right now.

Questions

1.5k

Companies

980

Updated

11.12.2026

1.5k Questions 980 Companies11.12.2026

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."

PLTCHK

_The_TaNk_

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

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

GoogleBloombergAmazon

Medium

Software Engineer

Choose the Closest Three-Position Sum

Problem Given the integer array values and the integer target, choose three array positions whose sum is nearest to target. The three positions must b...

Coding & AlgorithmsTwo Pointers & Sliding WindowSorting

Per-Caller Request Limiter Over Non-Decreasing Time Buckets

You are implementing a simple rate limiter that counts requests in discrete time buckets. Each request belongs to a time bucket, given as an integer, ...

Coding & AlgorithmsRate LimitingData Structure Design

Count Three-Digit Numbers With All-Distinct Digits in a Range

Given two three-digit integers left and right, count how many integers in the inclusive range from left to right have three pairwise different digits,...

Coding & AlgorithmsMath & Number Theory

First and Last Indices of a Value

Problem You receive an integer array values in non-decreasing order and an integer key. Return a two-element array containing the zero-based indices o...

Coding & AlgorithmsBinary Search

51 people solved

ByteDance

Medium

Software EngineerNew Grad

Shortest One-Letter-at-a-Time Transformation Between Two Words

You are given two words, begin_word and end_word, and a list of words word_list. All of the words have the same length and consist of lowercase Englis...

Coding & AlgorithmsGraphs

Machine Learning Engineer

Rectangle grid with IDs: coverage counts, replace and delete, O(1) queries, batch undo

Implement a class that maintains a two-dimensional grid of cells onto which rectangles are placed, each rectangle with its own ID. The requirements ar...

Software Engineering FundamentalsData Structure Design

Repeatedly Delete Adjacent Duplicate Pairs or Whole Runs of Equal Characters

You are given a string s of lowercase letters and a flag remove_whole_runs. Delete adjacent duplicates repeatedly until none remain, and return the fi...

Coding & AlgorithmsStacks & QueuesArrays & Strings

Software EngineerNew Grad

Every MEX Reachable With At Most One Bounded Increment

A system has n memory blocks. Block i holds an integer value memory_blocks[i], and every value satisfies 0 <= memory_blocks[i] < n. You may perform at...

Coding & AlgorithmsArrays & Strings

429 people solved

Oct 2, 2026

GoogleAmazonBloomberg

Hard

Software Engineer

Find Every Concatenation Starting Index

Problem You receive a string text and an array of strings pieces. Every piece has the same positive length. Return every zero-based starting index in ...

Coding & AlgorithmsTwo Pointers & Sliding WindowArrays & Strings

37 people solved

Replit

Hard

Software EngineerNew Grad

Convert Editor Keystrokes into a Minimal Insert, Delete and Skip Operation List

A text editor records an editing session as an initial document and a list of keystrokes. The cursor starts at position 0, before the first character ...

Coding & AlgorithmsSimulation & State Machines

Rank five-card hands by type, then find best and worst completions of unknown cards

A card game similar to poker compares hands of five cards. You first write the comparison between two players' hands, then extend it to hands whose la...

Software Engineering FundamentalsSortingArrays & Strings

212 people solved

Oct 2, 2026

GoogleAmazonBloomberg

Medium

Software Engineer

Enumerate Target Combinations with Single-Use Occurrences

Problem Given the integer array choices and the integer goal, return every unique combination of values whose sum is goal. Each position in choices ma...

Coding & AlgorithmsBacktracking & RecursionSorting

Count Windows That Follow an Increase, Equal, Decrease Pattern

You are given an integer array numbers and an array pattern whose values are each 1, 0 or -1. Let m = len(pattern). A window of m + 1 consecutive elem...

Coding & AlgorithmsString Algorithms

Partition Words Into Groups With Identical Letter Counts

Given a list of lowercase words, partition them into groups so that two words are in the same group exactly when one can be turned into the other by r...

Coding & AlgorithmsArrays & Strings

Software EngineerSenior+

Find an Instant-Runoff Winner without Modifying Ballots

Candidates are represented by enum values, and each ballot ranks candidates by preference. Repeatedly count each ballot for its highest-ranked remaini...

Coding & AlgorithmsSimulation & State MachinesArrays & Strings

Software EngineerNew Grad

Count Subarrays Whose Product Has an Odd Divisor Count

Given an integer array arr, call a nonempty contiguous subarray special when the product of its elements has an odd number of positive divisors. Imple...

Coding & AlgorithmsMath & Number TheoryArrays & Strings

Detect Security Attacks in Text Logs Using Sliding-Window Rules

You are given a large collection of text-format log lines describing network connections, and a set of rules that define security attacks. Write a pro...

Software Engineering FundamentalsTwo Pointers & Sliding WindowTesting & Quality

Software EngineerNew Grad

Count Length-k Windows That Are Strictly Increasing

Given an integer array nums and an integer k, count the contiguous windows of exactly k elements whose values are strictly increasing from left to rig...

Coding & AlgorithmsTwo Pointers & Sliding Window

Fetch Paginated Medical Records and Filter by Field Rules and Historical Average Weight

Write a program that collects medical records from an HTTP endpoint and returns the ones that meet a set of conditions. - You are given a URL. Each re...

Software Engineering FundamentalsAPI Integration & HTTP ClientsData Cleaning & Wrangling

Shortest Subarray Whose Distinct-Value Sum Reaches a Target

Given an array of positive integers nums and a positive integer target, return the length of the shortest contiguous subarray whose distinct sum is at...

Coding & AlgorithmsTwo Pointers & Sliding Window

72 people solved

Oct 15, 2026

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Tech Interview Questions

Choose the Closest Three-Position Sum

Per-Caller Request Limiter Over Non-Decreasing Time Buckets

Count Three-Digit Numbers With All-Distinct Digits in a Range

First and Last Indices of a Value

Shortest One-Letter-at-a-Time Transformation Between Two Words

Rectangle grid with IDs: coverage counts, replace and delete, O(1) queries, batch undo

Repeatedly Delete Adjacent Duplicate Pairs or Whole Runs of Equal Characters

Every MEX Reachable With At Most One Bounded Increment

Find Every Concatenation Starting Index

Convert Editor Keystrokes into a Minimal Insert, Delete and Skip Operation List

Rank five-card hands by type, then find best and worst completions of unknown cards

Enumerate Target Combinations with Single-Use Occurrences

Count Windows That Follow an Increase, Equal, Decrease Pattern

Partition Words Into Groups With Identical Letter Counts

Find an Instant-Runoff Winner without Modifying Ballots

Count Subarrays Whose Product Has an Odd Divisor Count

Detect Security Attacks in Text Logs Using Sliding-Window Rules

Count Length-k Windows That Are Strictly Increasing

Fetch Paginated Medical Records and Filter by Field Rules and Historical Average Weight

Shortest Subarray Whose Distinct-Value Sum Reaches a Target

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