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How to Solve Relative Sort Array Problem

Master the Relative Sort Array LeetCode problem with undetectable real-time assistance. Get instant solutions and explanations during your coding interviews.

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Easy#1122

LeetCode Problem

Relative Sort Array

Given two arrays arr1 and arr2, the elements of arr2 are distinct, and all elements in arr2 are also in arr1. Sort the elements of arr1 such that the relative ordering of items in arr1 are the same as in arr2. Elements that do not appear in arr2 should be placed at the end of arr1 in ascending order.

ArrayHash TableSortingCounting Sort

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Problem Breakdown

Understanding the Relative Sort Array Problem

Let's break down this LeetCode problem and understand what makes it challenging in interview settings.

Problem Statement

EasyProblem #1122

LeetCode

Relative Sort Array

How Phantom Code Helps

Get real-time assistance for Relative Sort Array problems during coding interviews. Phantom Code provides instant solutions and explanations.

Examples

# Example 1

Input

arr1 = [2,3,1,3,2,4,6,7,9,2,19], arr2 = [2,1,4,3,9,6]

Output

[2,2,2,1,4,3,3,9,6,7,19]

# Example 2

Input

arr1 = [28,6,22,8,44,17], arr2 = [22,28,8,6]

Output

[22,28,8,6,17,44]

Constraints

1 <= arr1.length, arr2.length <= 1000

0 <= arr1[i], arr2[i] <= 1000

All the elements of arr2 are distinct.

Each arr2[i] is in arr1.

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Solve Relative Sort Array — Given two arrays arr1 and arr2, the elements of arr2 are distinct, and all eleme...

Here's the optimal approach using Array:

def solve(input):

# Optimal O(n) solution

return result

Time: O(n) | Space: O(n)

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Undetectability Checklist

Run compatibility test before interviews

Use recommended Zoom version settings

Enable advanced screen capture options

Verify native desktop architecture

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Platform Compatibility

Zoom

Supported

Google Meet

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HackerRank

Supported

CodeSignal

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CoderPad

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Teams

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Undetectability and technical details

Our native desktop architecture avoids common detection vectors used by browser extensions. We provide a clear checklist so you can run basic checks and confirm the app will be invisible.

Platform compatibility and limitations

We work with Zoom, HackerRank, CodeSignal, CoderPad and other web-based platforms. Check the compatibility note and request a browser link if a specific desktop app is unsupported.

Frequently Asked Questions

Common questions about solving Relative Sort Array and using Phantom Code during coding interviews.

How does Phantom Code help me solve coding problems like Relative Sort Array during interviews?

Phantom Code generates complete solutions instantly with proper complexity analysis, letting you focus on explaining your approach and demonstrating problem-solving skills rather than getting stuck on implementation details during high-pressure situations.

What if the interviewer asks follow-up questions or modifications to problems like Relative Sort Array?

Phantom Code adapts in real-time. Screenshot the modified problem or use audio mode to capture the interviewer's follow-up, and get an updated solution within seconds — including edge cases and optimizations.

Can Phantom Code help me communicate my solution for problems like Relative Sort Array?

Yes. Phantom Code provides step-by-step approach explanations with 3 progressive thoughts, so you can walk through your solution naturally. It also provides time and space complexity analysis to discuss trade-offs.

How does Phantom Code assist with different programming languages for Relative Sort Array type problems?

Phantom Code supports 11 programming languages including Python, Java, C++, JavaScript, TypeScript, Go, Rust, Ruby, Swift, Kotlin, and C#. Set your preferred language and get idiomatic solutions.

What coding mistakes does Phantom Code help me avoid during Relative Sort Array interviews?

Phantom Code catches common mistakes like off-by-one errors, missing edge cases, incorrect base conditions, and suboptimal approaches. It provides clean, well-structured code that handles all edge cases.

Is Phantom Code detectable when solving problems like Relative Sort Array during live interviews?

No. Phantom Code runs as an invisible desktop overlay that doesn't appear in screen shares, recordings, or proctoring software. It works with Zoom, HackerRank, CodeSignal, CoderPad, and all major platforms.

How does Phantom Code help when I'm struggling with Relative Sort Array style questions under pressure?

The AI provides structured guidance: first the approach (what algorithm/data structure to use and why), then the implementation with clean code, and finally complexity analysis. This helps you think clearly even under pressure.

Does Phantom Code work for the coding platforms used in Relative Sort Array interviews?

Yes. Phantom Code works with all major coding platforms including LeetCode, HackerRank, CodeSignal, CoderPad, HackerEarth, and any browser-based coding environment.

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