Question 1

What is InterviewSkool?

Accepted Answer

InterviewSkool is an AI-powered mock interview platform that simulates real FAANG-style coding and system design interviews. An AI interviewer named Alex walks you through every stage: problem clarification, approach design, complexity analysis, coding, and hidden test suite evaluation for coding; requirements, architecture, and deep dives on a whiteboard for system design, and issues a hiring signal at the end.

Question 2

Does InterviewSkool support system design interviews?

Accepted Answer

Yes. Pick a problem (or go random) and a level: SDE-2, SDE-3, or Staff Engineer. You design on an interactive whiteboard while talking through requirements, architecture, and deep dives with Alex, and get a 0–100 score with per-parameter feedback and level readiness.

Question 3

How does the AI interviewer work?

Accepted Answer

Alex is an AI interviewer. It asks probing clarifying questions, validates your approach, challenges your complexity analysis, observes your code against hidden test cases in real time, and adapts its follow-up questions based on your answers, just like a real FAANG engineer would.

Question 4

Which companies does InterviewSkool prepare you for?

Accepted Answer

InterviewSkool currently supports Google, Meta, Amazon, Apple, Microsoft, and many more companies. Problems are sourced from real interviews at those companies and calibrated to the difficulty bar for SDE-1, SDE-2, and SDE-3+ levels.

Question 5

What programming languages can I use?

Accepted Answer

You can code in JavaScript, Python, Java, C++, or TypeScript. Pick the language you are most comfortable with.

Question 6

How is InterviewSkool different from LeetCode?

Accepted Answer

LeetCode is a problem bank, you solve problems alone and get a pass/fail. InterviewSkool simulates the actual interview conversation: Alex asks questions, challenges your reasoning, and evaluates how you communicate, not just whether your code passes. You get a hiring signal and 12-dimension feedback, not just test results.

Question 7

What is a hiring signal?

Accepted Answer

A hiring signal is the recommendation a real interviewer would make after your session: Strong Yes, Yes, Lean Yes, or No. InterviewSkool computes yours from 12 dimensions including code correctness, communication, DSA knowledge, and optimization mindset.

Question 8

How much does InterviewSkool cost?

Accepted Answer

InterviewSkool offers paid plans. Sign in with Google to see current pricing and get started.

Question 9

Is it Interview School or InterviewSkool?

Accepted Answer

InterviewSkool (one word, no space) is a distinct AI-powered mock interview platform at interviewskool.com. People sometimes search for it as 'Interview Skool' (two words), that's the same platform. InterviewSkool is NOT Interview School (interviews.school), which is a different career platform. InterviewSkool focuses on coding execution and technical system design with real-time voice AI.

Problem	Difficulty	Companies	Breakdown / Solution
Two Sum	Easy	14 companies	View breakdown →
Longest Substring Without Repeating Characters	Medium	17 companies	View breakdown →
Merge Intervals	Medium	18 companies	View breakdown →
Best Time to Buy and Sell Stock	Easy	14 companies	View breakdown →
Longest Palindromic Substring	Medium	12 companies	View breakdown →
Group Anagrams	Medium	13 companies	View breakdown →
Container With Most Water	Medium	10 companies	View breakdown →
Trapping Rain Water	Hard	10 companies	View breakdown →
Median of Two Sorted Arrays	Hard	9 companies	View breakdown →
Rotting Oranges	Medium	9 companies	View breakdown →
Number of Islands	Medium	11 companies	View breakdown →
Search in Rotated Sorted Array	Medium	9 companies	View breakdown →
Course Schedule	Medium	8 companies	View breakdown →
LRU Cache	Medium	13 companies	View breakdown →
Daily Temperatures	Medium	8 companies	View breakdown →
Gas Station	Medium	9 companies	View breakdown →
LFU Cache	Hard	5 companies	View breakdown →
Accounts Merge	Medium	3 companies	View breakdown →
Binary Tree Maximum Path Sum	Hard	4 companies	View breakdown →
Longest Palindromic Subsequence	Medium	2 companies	View breakdown →
Longest Repeating Character Replacement	Medium	3 companies	View breakdown →
Count Paths That Can Form a Palindrome in a Tree	Hard	2 companies	View breakdown →
Search a 2D Matrix	MEDIUM	2 companies	View breakdown →
String Compression	MEDIUM	4 companies	View breakdown →
Make Lexicographically Smallest Array by Swapping Elements	MEDIUM	2 companies	View breakdown →
Minimum Path Sum	Medium	1 companies	View breakdown →
Fraction to Recurring Decimal	Medium	1 companies	View breakdown →
Search a 2D Matrix II	Medium	1 companies	View breakdown →
First Unique Character in a String	Easy	1 companies	View breakdown →
Random Pick with Weight	Medium	2 companies	View breakdown →
Robot Return to Origin	Easy	1 companies	View breakdown →
Design HashMap	Easy	1 companies	View breakdown →
Domino and Tromino Tiling	Medium	1 companies	View breakdown →
High Five	Easy	1 companies	View breakdown →
Smallest String With Swaps	Medium	1 companies	View breakdown →
Find the Winner of an Array Game	Medium	1 companies	View breakdown →
Sell Diminishing-Valued Colored Balls	Medium	1 companies	View breakdown →
Find the Winner of the Circular Game	Medium	1 companies	View breakdown →
Valid Arrangement of Pairs	Hard	1 companies	View breakdown →

Problem	Difficulty	Companies	Breakdown / Solution
Two Sum	Easy	14 companies	View breakdown →
Longest Substring Without Repeating Characters	Medium	17 companies	View breakdown →
Merge Intervals	Medium	18 companies	View breakdown →
Best Time to Buy and Sell Stock	Easy	14 companies	View breakdown →
Longest Palindromic Substring	Medium	12 companies	View breakdown →
Group Anagrams	Medium	13 companies	View breakdown →
Container With Most Water	Medium	10 companies	View breakdown →
Trapping Rain Water	Hard	10 companies	View breakdown →
Median of Two Sorted Arrays	Hard	9 companies	View breakdown →
Rotting Oranges	Medium	9 companies	View breakdown →
Number of Islands	Medium	11 companies	View breakdown →
Search in Rotated Sorted Array	Medium	9 companies	View breakdown →
Course Schedule	Medium	8 companies	View breakdown →
LRU Cache	Medium	13 companies	View breakdown →
Daily Temperatures	Medium	8 companies	View breakdown →
Gas Station	Medium	9 companies	View breakdown →
LFU Cache	Hard	5 companies	View breakdown →
Accounts Merge	Medium	3 companies	View breakdown →
Binary Tree Maximum Path Sum	Hard	4 companies	View breakdown →
Longest Palindromic Subsequence	Medium	2 companies	View breakdown →
Longest Repeating Character Replacement	Medium	3 companies	View breakdown →
Count Paths That Can Form a Palindrome in a Tree	Hard	2 companies	View breakdown →
Search a 2D Matrix	MEDIUM	2 companies	View breakdown →
String Compression	MEDIUM	4 companies	View breakdown →
Make Lexicographically Smallest Array by Swapping Elements	MEDIUM	2 companies	View breakdown →
Minimum Path Sum	Medium	1 companies	View breakdown →
Fraction to Recurring Decimal	Medium	1 companies	View breakdown →
Search a 2D Matrix II	Medium	1 companies	View breakdown →
First Unique Character in a String	Easy	1 companies	View breakdown →
Random Pick with Weight	Medium	2 companies	View breakdown →
Robot Return to Origin	Easy	1 companies	View breakdown →
Design HashMap	Easy	1 companies	View breakdown →
Domino and Tromino Tiling	Medium	1 companies	View breakdown →
High Five	Easy	1 companies	View breakdown →
Smallest String With Swaps	Medium	1 companies	View breakdown →
Find the Winner of an Array Game	Medium	1 companies	View breakdown →
Sell Diminishing-Valued Colored Balls	Medium	1 companies	View breakdown →
Find the Winner of the Circular Game	Medium	1 companies	View breakdown →
Valid Arrangement of Pairs	Hard	1 companies	View breakdown →

DSA Question Tracker & Breakdowns

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