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

Visa

Hard

Software EngineerSenior+

Count Ways to Build a Target from Increasing Dictionary Columns

You are given equal-length words and a target string. Build the target from left to right. For each target character, choose a matching character from...

Coding & AlgorithmsDynamic ProgrammingArrays & Strings

22 people solved

Oct 17, 2026

GoogleAmazonBloomberg

Easy

Software Engineer

Remove Chosen Values from an Array Prefix

Problem Given the integer array nums and integer val, remove every occurrence of val in place. Return the number k of elements whose values differ fro...

Coding & AlgorithmsTwo Pointers & Sliding Window

Earliest Substring That Is a Rearrangement of a Pattern

Given a text s and a pattern p, find the first place in s where some rearrangement of p appears as a contiguous substring. Return the smallest index i...

Coding & AlgorithmsTwo Pointers & Sliding WindowArrays & Strings

Group Words into Transitive Synonym Sets by Shared Two-Words-Before-and-After Context

You are given a list of sentences. Two words are considered synonyms if they appear in the same context: the same two words immediately before them an...

Coding & AlgorithmsGraphsArrays & Strings

Software EngineerNew Grad

Total Per-Letter Counts from an Encoded String with Multi-Digit Numbers

A string encodes counts in a fixed format: a lowercase letter followed by a decimal number, repeated. The same letter may appear more than once. Add u...

Coding & AlgorithmsArrays & Strings

Find where a query's words appear in order, each within k positions

You are given a text, a query and an integer k. Find every place where the words of the query appear in the text in the same order, with each query wo...

Coding & AlgorithmsDynamic Programming

Palindrome Check That Ignores Spaces, Symbols and Letter Case

Given a string, decide whether it reads the same forwards and backwards once spaces and symbols are ignored. The report says only that spaces and symb...

Coding & AlgorithmsArrays & StringsTwo Pointers & Sliding Window

Check Whether a String Can Become a Palindrome by Deleting at Most One Character

Given a string s, return True if s can be made into a palindrome by deleting at most one character, and False otherwise. A palindrome reads the same f...

Coding & AlgorithmsTwo Pointers & Sliding WindowArrays & Strings

Machine Learning Engineer

Decide whether every car can park given preferred spots and forward-only overflow

A one-way street has n parking spots in a row, numbered 0 to n - 1 in the direction of travel. Cars arrive one at a time, in the order given by prefer...

Coding & AlgorithmsSimulation & State Machines

Splice a Second Linked List into the First Between Positions n and y

You are given two singly linked lists. Splice the second list into the first: the n-th node of the first list links to the head of the second list, an...

Coding & AlgorithmsLinked Lists

Software Engineer Locked

Highlight Whole-Word Matches and Merge Overlapping Spans

Highlight exact whole-word phrases, reject partial-word matches, merge overlapping text spans, and insert tags without shifting search positions.

Coding & AlgorithmsArrays & StringsIntervals & Scheduling

Wrapper Over a Paginated Page API That Fetches the Next N Words

You are given an external API that returns content one page at a time, and each page holds a variable number of words. Write a wrapper class around th...

Software Engineering FundamentalsAPI Integration & HTTP ClientsData Structure Design

Software EngineerNew Grad

Find the Integer Point Covered by the Most Street Lamps

A street is modeled as a number line. You are given lights, where lights[i] = [position_i, range_i] describes a street lamp at integer coordinate posi...

Coding & AlgorithmsIntervals & Scheduling

Stack Whose Pop Removes the Most Frequent Value, Ties Broken by Recency

A frequency stack holds integers and supports two operations: - push x: place x on top of the stack. - pop: remove and return the value that occurs mo...

Coding & AlgorithmsData Structure DesignStacks & Queues

Reach the Last Index in the Fewest Jumps

Problem You start at index 0 of the integer array jumps. From index i, choose an integer distance d and move to index i + d, provided that: - 0 <= d <...

Coding & AlgorithmsGreedyDynamic Programming

Select a Permutation by Its Lexicographic Rank

Problem List the permutations of the digits 1 through n in increasing lexicographic order. Return the permutation at the one-based position k, as a st...

Coding & AlgorithmsMath & Number Theory

Dasher Daily Pay from Order Events with Double Rate in Peak Windows

A Dasher (a delivery driver) is paid for the time spent delivering orders. You are given the order events for one Dasher's day. At any moment, the act...

Coding & AlgorithmsIntervals & Scheduling

Software EngineerNew Grad

Longest Streak of Consecutive Login Days by a Single User

You are given login records, each a user id and the calendar date of one login. Return the length of the longest streak of consecutive days on which a...

Coding & AlgorithmsArrays & Strings

Software EngineerNew Grad

Optimize Repeated Mirrored XOR Updates

Repeatedly apply the following in-place operation to an array: `text arr[i % n] = arr[i % n] XOR arr[n - (i % n) - 1] ` The operation count k can be a...

Coding & AlgorithmsBit ManipulationArrays & Strings

In-Memory Key-Value Store with Nested Begin, Commit, and Rollback Transactions

Implement an in-memory key-value store that supports transactions: - set(key, value) sets key to value. - unset(key) removes key. - get(key) returns t...

Software Engineering FundamentalsData Structure DesignTransactions & Isolation

136 people solved

Sep 24, 2026

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Tech Interview Questions

Count Ways to Build a Target from Increasing Dictionary Columns

Remove Chosen Values from an Array Prefix

Earliest Substring That Is a Rearrangement of a Pattern

Group Words into Transitive Synonym Sets by Shared Two-Words-Before-and-After Context

Total Per-Letter Counts from an Encoded String with Multi-Digit Numbers

Find where a query's words appear in order, each within k positions

Palindrome Check That Ignores Spaces, Symbols and Letter Case

Check Whether a String Can Become a Palindrome by Deleting at Most One Character

Decide whether every car can park given preferred spots and forward-only overflow

Splice a Second Linked List into the First Between Positions n and y

Highlight Whole-Word Matches and Merge Overlapping Spans

Wrapper Over a Paginated Page API That Fetches the Next N Words

Find the Integer Point Covered by the Most Street Lamps

Stack Whose Pop Removes the Most Frequent Value, Ties Broken by Recency

Reach the Last Index in the Fewest Jumps

Select a Permutation by Its Lexicographic Rank

Dasher Daily Pay from Order Events with Double Rate in Peak Windows

Longest Streak of Consecutive Login Days by a Single User

Optimize Repeated Mirrored XOR Updates

In-Memory Key-Value Store with Nested Begin, Commit, and Rollback Transactions

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