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

Medium

Software Engineer Locked

Rebalance Experiment Buckets with Minimal Reassignment

Rebalance experiment buckets to exact target percentages while retaining as many existing assignments as the contract allows. The challenge focuses on...

Coding & AlgorithmsArrays & Strings

263 people solved

Jul 23, 2026

AmazonGoogleBloomberg

Hard

Software Engineer

Measure Rainwater Held Between Bars

Problem The array heights describes a row of adjacent vertical bars on level ground. Bar i has height heights[i], and every bar is one unit wide. Retu...

Coding & AlgorithmsTwo Pointers & Sliding WindowDynamic Programming

13 people solved

Discord

Medium

Data ScientistSenior+

Count a Character in a String

Count a Character in a String Implement number_of_character(string, char). - string is the input string. - char is the single character whose occurren...

Coding & AlgorithmsArrays & Strings

Longest Chain of Single-Letter Insertions

Problem Choose a chain of words from words. Each next word must result from inserting exactly one letter into the preceding word without changing the ...

Coding & AlgorithmsDynamic ProgrammingArrays & Strings

Decide Whether a Vehicle Is Ready from Maintenance Open and End Events

A vehicle's maintenance log is a list of events. Each event either opens or ends a maintenance task of one type, such as oil or brake. The vehicle is ...

Coding & AlgorithmsSorting

Rearrange an Array to Alternate Largest and Smallest Remaining Values

Given a list of integers, rearrange its elements so that they alternate between the extremes of what is left: the first element is the largest value, ...

Coding & AlgorithmsSorting

Count Inclusive-Band Sums of Nonempty Index Ranges

Problem Return the number of nonempty contiguous ranges whose sum lies between lower and upper inclusive. Count index ranges separately even when thei...

Coding & AlgorithmsSortingArrays & Strings

Find the Shortest Segment Preserving Array Degree

Problem The degree of nums is its highest value frequency. Return the minimum length of a contiguous subarray having the same degree as the entire arr...

Coding & AlgorithmsArrays & Strings

Square a Sorted Array and Return the Squares in Order

Problem Given nums in nondecreasing order, return every value squared, also in nondecreasing order. Negative values may cause squared values to appear...

Coding & AlgorithmsTwo Pointers & Sliding WindowArrays & Strings

Rank Fixed-Width Numeric Suffixes with Original-Index Ties

Problem For each query[k, trim], keep only the rightmost trim digits of every string in nums, rank those equal-width numbers increasingly, and return ...

Coding & AlgorithmsSortingArrays & Strings

Fetch a Remote Text File and Compute Mean, Median and Mode of Employee Counts

In a coding interview without AI assistance, you are asked to write a Python program that fetches data from a remote plain-text file and computes the ...

Software Engineering FundamentalsAPI Integration & HTTP ClientsData Cleaning & Wrangling

Return Distinct Values Shared by Two Arrays

Problem Return every value that appears in both nums1 and nums2, exactly once. The source accepts any output order. `cpp vector<int> intersection(vect...

Coding & AlgorithmsArrays & Strings

16 people solved

Visa

Medium

Software EngineerNew Grad

Solve Three Array Coding Problems

An online assessment contains the following three independent coding problems. For each problem, write a function that returns the requested value. Us...

Coding & AlgorithmsArrays & StringsDynamic Programming

Recognize a Cyclic Left Shift

Problem A shift moves the first character of s to its end. Return whether zero or more shifts can produce goal. `cpp class Solution { public: bool...

Coding & AlgorithmsArrays & StringsString Algorithms

20 people solved

Medium

Software EngineerSenior+

Maximum Product of a Contiguous Subarray With Negatives and Zeros

Given an integer array nums, return the largest product obtained by multiplying the elements of a non-empty contiguous subarray. The array can contain...

Coding & AlgorithmsDynamic Programming

Android Engineer Locked

Jetpack Compose Auto-Scrolling List with a Start/Stop Toggle and Hex Color Switching

Build an Android screen in Jetpack Compose with a list that scrolls by itself, a one-tap control that starts and stops the motion, and a one-tap contr...

Software Engineering FundamentalsAndroid

Logger with Remove, Truncate, Uppercase and Store Handlers and Stored-Message Search

Build a logger that passes every logged message to a set of handlers. The logger must support four handler types: - Remove: removes every occurrence o...

Software Engineering FundamentalsLow-Level Design (OOP)Arrays & Strings

Count Overlapping Rectangle Updates on a Grid

Count Overlapping Rectangle Updates on a Grid Implement range_add_counts(n, rectangles). Start with an n x n matrix of zeroes. Each rectangle is repre...

Coding & AlgorithmsGrids & Matrices

Software Engineer Locked

Analyze Returning Borrowers Across Two Days of Logs

Analyze two days of loan activity to find users who appear on both days and have at least two distinct loan types across their combined records. Retai...

Data Manipulation (SQL/Python)Data Cleaning & Wrangling

Find Array Elements Uniquely Determined by Known Range Sums

An integer array A of length n is hidden from you; its positions are numbered 1 to n. You are given a list of ranges (L, R), and the sum A[L] + A[L+1]...

Coding & AlgorithmsGraphsArrays & Strings

70 people solved

Aug 21, 2026

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Tech Interview Questions

Rebalance Experiment Buckets with Minimal Reassignment

Measure Rainwater Held Between Bars

Count a Character in a String

Longest Chain of Single-Letter Insertions

Decide Whether a Vehicle Is Ready from Maintenance Open and End Events

Rearrange an Array to Alternate Largest and Smallest Remaining Values

Count Inclusive-Band Sums of Nonempty Index Ranges

Find the Shortest Segment Preserving Array Degree

Square a Sorted Array and Return the Squares in Order

Rank Fixed-Width Numeric Suffixes with Original-Index Ties

Fetch a Remote Text File and Compute Mean, Median and Mode of Employee Counts

Return Distinct Values Shared by Two Arrays

Solve Three Array Coding Problems

Recognize a Cyclic Left Shift

Maximum Product of a Contiguous Subarray With Negatives and Zeros

Jetpack Compose Auto-Scrolling List with a Start/Stop Toggle and Hex Color Switching

Logger with Remove, Truncate, Uppercase and Store Handlers and Stored-Message Search

Count Overlapping Rectangle Updates on a Grid

Analyze Returning Borrowers Across Two Days of Logs

Find Array Elements Uniquely Determined by Known Range Sums

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