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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
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
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
Appian logo
AppianAmazoneBay
Easy
Software Engineer

Can One Removal Restore Strict Order?

Problem Return whether removing exactly one element from nums can leave its remaining elements in strictly increasing order. Equality does not satisfy...

Coding & AlgorithmsArrays & StringsGreedy
0
0
9 people solved
Google logo
GoogleMetaMicrosoft

Also asked at Microsoft, Amazon, Bloomberg, Zoho, Cognizant

Easy
Software Engineer

Find the Highest Point from Altitude Changes

Problem Begin at altitude zero. The entries of gain are the altitude changes on successive route legs. Return the highest altitude reached at any rout...

Coding & AlgorithmsArrays & Strings
1
0
12 people solved
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
Google logo
Google
Medium
Data Scientist

Compute precision–recall curve on imbalanced data

You receive a CSV with columns: actual_label ∈ {0,1} and predicted_prob ∈ [0,1]; the positive class rate is ≈5%. a) Which evaluation metrics would you...

Coding & AlgorithmsModel EvaluationML Coding
19
0
143 people solved
Oct 13, 2025
Two Sigma logo
Two Sigma
Easy
Data Scientist

Match readings with latest same-city humidity

Problem You are given two time-sorted lists of sensor readings: - Temperature records: (time, city, reading) - Humidity records: (time, city, reading)...

Coding & AlgorithmsTwo Pointers & Sliding Window
24
2
270 people solved
Dec 15, 2025
Microsoft logo
Microsoft
Medium
Machine Learning EngineerIntern

Find pairs with the minimum absolute difference

Given an integer array (not necessarily sorted), find the minimum absolute difference between any two distinct elements. Return all pairs of values th...

Coding & AlgorithmsSorting
11
0
207 people solved
Feb 9, 2026
Google logo
Google
Medium
Software Engineer

Fully Expand Replacement Placeholders

Problem You are given replacements, a list of [key, value] pairs, and a string text. Each key is a unique uppercase English letter. A placeholder such...

Coding & AlgorithmsParsing & InterpretersGraphs
0
0
12 people solved
Google logo
Google
Easy
Software Engineer

Find largest digit-sharing subset

You are given an array of N integers. Each integer has exactly two decimal digits (i.e., each element is between 10 and 99 inclusive). You want to cho...

Coding & AlgorithmsArrays & Strings
21
0
247 people solved
Dec 8, 2025
Amazon logo
AmazonGoogleMicrosoft
Hard
Software Engineer

Character After Special String Commands

Character After Special String Commands You are given a string s containing lowercase English letters and the commands *, #, and %, together with a ze...

Coding & AlgorithmsArrays & StringsSimulation & State Machines
0
0
9 people solved
Google logo
Google
Medium
Software Engineer

Count Adjacent Substring Pairs With the Same Set of Distinct Letters

Given a string s of lowercase English letters, two non-empty strings form a magical pair when they contain exactly the same set of distinct characters...

Coding & AlgorithmsArrays & Strings
1
0
9 people solved
Jul 20, 2026
Datologyai logo
Datologyai
Easy
Software Engineer

Text Editor with a Cursor: Typing, Backspace, and Four-Way Cursor Movement

Implement a TextEditor class that holds one document and a cursor. The cursor sits between two characters, or at the start or end of the text, and eve...

Software Engineering FundamentalsData Structure DesignStacks & Queues
3
0
52 people solved
Jan 1, 2026
Amazon logo
AmazonGoogle
Medium
Software Engineer

Least Permutation Strictly Above a Target

Problem You are given strings s and target of the same length, containing only lowercase English letters. Return the lexicographically smallest permut...

Coding & AlgorithmsGreedyArrays & Strings
0
0
8 people solved
Amazon logo
AmazonIBM
Medium
Software Engineer

Partition a String into the Fewest Duplicate-Free Pieces

Problem Cut lowercase s into nonempty contiguous substrings so each character belongs to exactly one piece and no letter repeats within any piece. Ret...

Coding & AlgorithmsGreedyArrays & Strings
0
0
10 people solved
Amazon logo
AmazonGoogleMeta

Also asked at Meta, Microsoft, Deshaw, Bloomberg, Chubb

Medium
Software Engineer

Sum Every Subarray's Maximum-Minus-Minimum

Problem For each nonempty contiguous subarray of nums, its range is the largest value minus the smallest value in that subarray. Return the sum of the...

Coding & AlgorithmsStacks & QueuesArrays & Strings
1
0
11 people solved
Nuro logo
Nuro
Hard
Software EngineerIntern

Check Vertical Reflection Symmetry with Duplicate Points

Determine whether a multiset of two-dimensional points is symmetric about some vertical line. Every occurrence of a point must have a reflected occurr...

Coding & AlgorithmsArrays & Strings
8
0
55 people solved
Feb 15, 2026
Google logo
GoogleMicrosoftAmazon
Medium
Software Engineer

Minimize the Longest Jump on a Round Trip through Ordered Stones

Problem The frog starts at stones[0]=0, must reach the last stone, then return to the first. It may jump to each stone at most once; the initial place...

Coding & AlgorithmsGreedyArrays & Strings
0
0
8 people solved
Google logo
GoogleBloombergAmazon

Also asked at Amazon, Meta, Microsoft

Medium
Software Engineer

Find the Largest Magnitude of a Subarray Sum

Problem For any contiguous subarray of nums, take the absolute value of its sum. The empty subarray, with sum zero, is also allowed. Return the greate...

Coding & AlgorithmsArrays & Strings
1
0
9 people solved
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