Ace technical interviews with one click

Marauder Bot is a stealth Chrome extension that tackles online technical questions instantly, empowering you to save time on interview prep and focus on solving real-world problems.

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Optimized for a variety of programming languages

- JavaScript
- TypeScript
- Python
- Java
- SQL
- C++

Tackle technical challenges effortlessly

One side panel, every question type. Marauder Bot reads the page, picks the right solver, and streams the answer back — fast enough to keep up with you, structured enough to actually learn from.

One-click algorithm solutions

Click Solve and Marauder Bot streams a working solution into the side panel — annotated code, time and space complexity, and a confidence score. Expand and collapse each section as you study, then replay the whole walkthrough whenever you want to see it again.

docs.marauderbot.com/demo-algorithm

Question detected

Algorithm Question Demo

Question

Longest Substring Without Repeating Characters

Given a string, find the length of the longest substring without repeating characters.

Example

Input: s = "abcabcbb"
Output: 3
Explanation: The answer is "abc", with the length of 3.

Answer

def length_of_longest_substring(s: str) -> int:
    pass

Side panelAlgorithm

Click Solve to analyze the question on this page.

Multiple-choice with reasoning

For every multiple-choice question, you get the answer, a confidence bar, and a written justification — not just a letter. Correct choices light up green, distractors fade to gray, so you immediately see why one answer beats the others.

docs.marauderbot.com/demo-multiple-choice

3 questions found

Multiple Choice Question Demo

Questions

1. What is the primary function of the Java Virtual Machine (JVM)?
- A) To compile Java source code into bytecode
- B) To execute Java bytecode
- C) To optimize Java code for specific hardware
- D) To manage database connections in Java applications
2. Which component of the JVM is responsible for loading, linking, and initializing Java classes?
- A) Garbage Collector
- B) JIT Compiler
- C) Class Loader
- D) Runtime Data Area
3. What is the purpose of the JVM's Just-In-Time (JIT) compiler?
- A) To interpret Java bytecode line by line
- B) To compile Java source code into bytecode
- C) To convert bytecode into native machine code for faster execution
- D) To manage memory allocation for Java objects

Side panelMulti-choice

System design, structured

Open-ended design prompts come back as a structured plan: requirements, an architecture diagram, and a breakdown of every component with technologies, scaling notes, and tradeoffs. Click any component to drill in.

docs.marauderbot.com/demo-system-design

System design detected

System Design Question Demo

Question

Design a ride-sharing service.

Functional Requirements

Riders can request a ride from their current location to a destination
Drivers can accept or decline ride requests

Non-Functional Requirements

Low latency matching between riders and drivers
The system should be highly available

Side panelSystem design

Click Solve to design this system.

Pick the right model for the question

Switch between the latest models from OpenAI, Anthropic, and Google in a single click. Use GPT for raw reasoning, Claude for clean code explanations, and Gemini when the page is long — and change your mind any time. We keep the model lineup current; you don't bring your own keys.

docs.marauderbot.com/demo-algorithm

Algorithm question

Algorithm Question Demo

Question

Longest Substring Without Repeating Characters

Given a string, find the length of the longest substring without repeating characters.

Example

Input: s = "abcabcbb"
Output: 3

SettingsModel

3 providers

Pick the model for the next solve. Switch any time — your choice sticks for future runs.

Will solve withGPT-5.4Solve

Stealth mode for screen shares

Pop the side panel out into its own window. Your shared tab stays clean, your answers stay on a second display — undetectable on calls and live coding sessions.

docs.marauderbot.com/demo-algorithm

Sharing

Algorithm Question Demo

Question

Longest Substring Without Repeating Characters

Given a string, find the length of the longest substring without repeating characters.

Answer

def length_of_longest_substring(s: str) -> int:
    pass

Side panel hidden from shared tab

Side panelAlgorithm96% confident

# Sliding window with last-seen index.
def length_of_longest_substring(s: str) -> int:
    last = {}
    start = 0
    best = 0
    for i, ch in enumerate(s):
        if ch in last and last[ch] >= start:
            start = last[ch] + 1
        last[ch] = i
        best = max(best, i - start + 1)
    return best

def test_length_of_longest_substring():
    f = length_of_longest_substring
    assert f("abcabcbb") == 3
    assert f("bbbbb") == 1
    assert f("pwwkew") == 3
    assert f("") == 0
    assert f("dvdf") == 3

Time: O(n) — each character is visited once; dict updates are amortized O(1).
Space: O(min(n, |Σ|)) — the dict stores one entry per distinct char.

Confidence96%

Stealth windownot shared

Side panelAlgorithm96% confident

# Sliding window with last-seen index.
def length_of_longest_substring(s: str) -> int:
    last = {}
    start = 0
    best = 0
    for i, ch in enumerate(s):
        if ch in last and last[ch] >= start:
            start = last[ch] + 1
        last[ch] = i
        best = max(best, i - start + 1)
    return best

def test_length_of_longest_substring():
    f = length_of_longest_substring
    assert f("abcabcbb") == 3
    assert f("bbbbb") == 1
    assert f("pwwkew") == 3
    assert f("") == 0
    assert f("dvdf") == 3

Time: O(n) — each character is visited once; dict updates are amortized O(1).
Space: O(min(n, |Σ|)) — the dict stores one entry per distinct char.

Confidence96%

Shared·drag a chrome bar to move a window

Pricing

Choose a plan that fits your interview schedule.
All plans are powered by advanced AI model, and always run in stealth.

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Free Trial

7-day free trial period before subscription.

Free

15 webpages in 7 days
All features in the base plan

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Pro

Support the most demanding interview schedules.

$35 / month

Coming soon

5,000 webpages per month
Powered by OpenAI GPT-5.4, Claude Sonnet 4.5, Gemini 3.1 Pro
Algorithm questions
Multiple choice questions
System design questions (beta)
Trigger analysis by shortcut
Stealth mode
Track all previous analyses in dashboard
Image to text OCR and comprehension
Handle long and complicated pages
Export analyses to JSON
Regenerate answers
Get 100% accurate answers for 1000+ algorithm questions
More features to come

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Walk into technical interviews with confidence. Start your journey to coding success today!

Frequently asked questions

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