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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 testimonial
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_ testimonial
_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"

Chris testimonial
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 testimonial
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."

Jake testimonial
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 testimonial
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."

Carlos testimonial
CarlosFull Stack, Shopify

"The solution quality is insane. It covers approach, edge cases, time complexity, follow-ups. Nothing else comes close."

boba.tea.vibes testimonial
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."

Andy testimonial
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 testimonial
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."

Shruti testimonial
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 testimonial
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."

Bianca testimonial
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 testimonial
tambrahm007

"I recently cleared Uber interviews (strong hire in the design round) and all the questions were present in prachub."

toa testimonial
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 testimonial
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_ testimonial
_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"

Chris testimonial
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 testimonial
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."

Jake testimonial
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 testimonial
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."

Carlos testimonial
CarlosFull Stack, Shopify

"The solution quality is insane. It covers approach, edge cases, time complexity, follow-ups. Nothing else comes close."

boba.tea.vibes testimonial
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."

Andy testimonial
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 testimonial
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."

Shruti testimonial
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 testimonial
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."

Bianca testimonial
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 testimonial
tambrahm007

"I recently cleared Uber interviews (strong hire in the design round) and all the questions were present in prachub."

toa testimonial
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
Upstart logo
Upstart
Medium
Software Engineer

Reverse even numbers in a list

Given an integer array nums, remove all odd numbers and return the remaining even numbers in reverse order (preserving no other ordering constraints)....

Coding & AlgorithmsArrays & Strings
18
0
195 people solved
Mar 9, 2026
OpenAI logo
OpenAI
Medium
Software Engineer Locked

Implement Social Graph Snapshot Queries

This question evaluates understanding of graph data structures, query-efficient indexing, and algorithmic trade-offs for static directed graphs, inclu...

Coding & AlgorithmsGraphsData Structure Design
12
0
153 people solved
Apr 13, 2026
Bloomberg logo
BloombergGoogle
Medium
Software Engineer

Count Ordered Equal-Distance Point Triples

Count Ordered Equal-Distance Point Triples You are given distinct points in the plane. Count ordered triples of distinct point indices (i,j,k) for whi...

Coding & AlgorithmsMath & Number TheoryArrays & Strings
0
0
5 people solved
NVIDIA logo
NVIDIA
Hard
Software Engineer Locked

Implement short algorithms on logs, grids, and strings

This multi-part Coding & Algorithms question evaluates algorithmic problem-solving skills and mastery of core competencies including temporal window r...

Coding & AlgorithmsArrays & Strings
24
0
246 people solved
Feb 11, 2026
Pinterest logo
Pinterest
Medium
Machine Learning Engineer Locked

Solve five hard algorithm problems

This set of problems evaluates algorithm design and problem-solving skills across array manipulation, range-update techniques, load-balancing and part...

Coding & AlgorithmsArrays & StringsGreedy
10
0
159 people solved
Mar 8, 2026
Google logo
GoogleMeta
Medium
Software Engineer

Recover Coin Denominations from Combination Counts

Recover Coin Denominations from Combination Counts You are given numWays of length N. Its entry numWays[a - 1] gives the number of ways to make amount...

Coding & AlgorithmsDynamic ProgrammingMath & Number Theory
0
0
12 people solved
ByteDance logo
ByteDance
Medium
Software Engineer

Report the winner after each move on an n-by-n tic-tac-toe board

Two players play a generalized game of tic-tac-toe on an n × n board. The players are numbered 1 and 2, and each move places the moving player's mark ...

Coding & AlgorithmsSimulation & State Machines
0
0
10 people solved
Jul 28, 2026
Google logo
GoogleAmazonPaytm

Also asked at Paytm, Infosys, Bloomberg

Medium
Software Engineer

Smallest Subsequence Keeping Each Letter Once

Problem Return the lexicographically smallest subsequence of s that includes each distinct letter appearing in s exactly once. Character order must fo...

Coding & AlgorithmsGreedyStacks & Queues
0
0
8 people solved
Google logo
Google
Hard
Software Engineer

Find the Largest Palindromic Product of Equal-Length Factors

Find the Largest Palindromic Product of Equal-Length Factors Given n, find the largest integer that is both a decimal palindrome and the product of tw...

Coding & AlgorithmsMath & Number Theory
0
0
6 people solved
Anthropic logo
Anthropic
Hard
Software Engineer

Implement staircase printing and distributed mode/median

Problem A: Print a “staircase” pattern Implement a function that prints a staircase with n rows. Input - An integer n (n >= 1) Output - Print n lines....

Coding & Algorithms
78
0
1075 people solved
Nov 19, 2025
Google logo
GoogleAmazonMeta

Also asked at Meta, Bloomberg, Microsoft

Medium
Software Engineer

Remove as Many Target-Sum Pairs as Possible

Problem One operation removes two distinct occurrences from nums whose values sum to k. Each occurrence can be removed only once. Return the maximum n...

Coding & AlgorithmsArrays & Strings
1
0
9 people solved
Amazon logo
AmazonDoorDashGoogle

Also asked at Google, Zoho, Meta

Easy
Software Engineer

Match Two Strings with Exactly One Distinct-Index Swap

Problem Return whether swapping the characters at exactly two different indices of s can make it equal to goal. Even when the strings already match, a...

Coding & AlgorithmsArrays & Strings
0
0
10 people solved
Amazon logo
Amazon
Easy
Data Engineer

Solve Two String Problems

You are asked to solve the following two coding problems: 1. Unique Morse Code Transformations You are given an array of lowercase English words, word...

Coding & AlgorithmsString AlgorithmsArrays & Strings
39
0
298 people solved
Feb 23, 2026
Apple logo
Apple
Medium
Software EngineerIntern

Solve mixed coding tasks from interviews

Solve the following interview-style coding problems (you may choose any programming language unless specified). Provide correct logic and handle edge ...

Coding & AlgorithmsTreesSorting
19
0
209 people solved
Feb 9, 2026
DRW logo
DRW
Medium
Software EngineerNew Grad

Largest Number From a 1-and-2 Digit String With Even Counts of Each Digit

You are given a string digits consisting only of the characters '1' and '2'; it represents a positive integer. You may delete zero or more characters ...

Coding & AlgorithmsGreedyArrays & Strings
8
0
85 people solved
Mar 5, 2026
Uber logo
Uber
Medium
Software Engineer

Solve Balanced Permutations and Tree Reversals

You have 90 minutes to solve the following two independent coding problems. Problem 1: Balanced Prefix Values in a Permutation You are given a permuta...

Coding & AlgorithmsTreesArrays & Strings
15
0
157 people solved
Apr 3, 2026
Bloomberg logo
Bloomberg
Medium
Software Engineer

Find invalid transactions in time-sorted input

Problem You are given a list of transaction records, already sorted in non-decreasing order by time. Each transaction is a string in the form: "name,t...

Coding & AlgorithmsTwo Pointers & Sliding Window
59
1
433 people solved
Dec 15, 2025
Amazon logo
AmazonGoogleMicrosoftBloomberg

Also asked at Microsoft, Bloomberg

Easy
Software Engineer

Reverse Through the First Matching Character

Problem Reverse the prefix of word from index 0 through the first occurrence of ch, including that occurrence. Leave every later character unchanged. ...

Coding & AlgorithmsArrays & Strings
0
0
9 people solved
Grammarly logo
GrammarlyMorgan Stanley
Medium
Software Engineer

Fewest Substrings with Equal Character Frequencies

Fewest Substrings with Equal Character Frequencies You are given a lowercase English string s. Partition the entire string into one or more nonempty, ...

Coding & AlgorithmsDynamic ProgrammingArrays & Strings
1
0
11 people solved
Google logo
GoogleMetaAmazon

Also asked at Amazon, Microsoft, Bloomberg

Easy
Software Engineer

Return Absolute Differences of Strictly Left and Right Sums

Problem For each index i in nums, sum entries strictly to its left and strictly to its right, using 0 for an empty side. Return the absolute differenc...

Coding & AlgorithmsArrays & Strings
1
0
10 people solved
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