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Apple Interview Questions (303)

Practice real interview problems from Apple

#1

Two Sum

Easy✓ Solution📹 Video
Accenture+126
#2

Add Two Numbers

Medium✓ Solution📹 Video
Accenture+36
#6

Zigzag Conversion

Medium✓ Solution📹 Video
Amazon+18
#7

Reverse Integer

Medium✓ Solution📹 Video
Accenture+21
#8

String to Integer (atoi)

Medium✓ Solution📹 Video
Accenture+20
#11

Container With Most Water

Medium✓ Solution📹 Video
Accenture+57
#13

Roman to Integer

Easy✓ Solution📹 Video
Accenture+35
#14

Longest Common Prefix

Easy✓ Solution📹 Video
Accenture+59
#15

3Sum

Medium✓ Solution📹 Video
Accenture+56
#18

4Sum

Mediumâś“ Solution
Accenture+19
#19

Remove Nth Node From End of List

Medium✓ Solution📹 Video
Accenture+17
#20

Valid Parentheses

Easy✓ Solution📹 Video
Accenture+112
#21

Merge Two Sorted Lists

Easy✓ Solution📹 Video
Accenture+35
#22

Generate Parentheses

Medium✓ Solution📹 Video
Accenture+39
#27

Remove Element

Easy✓ Solution📹 Video
Adobe+9
#37

Sudoku Solver

Hard✓ Solution📹 Video
Amazon+16
#39

Combination Sum

Medium✓ Solution📹 Video
Airbnb+25
#45

Jump Game II

Medium✓ Solution📹 Video
Adobe+25
#46

Permutations

Mediumâś“ Solution
Agoda+24
#47

Permutations II

Medium✓ Solution📹 Video
Amazon+8
#48

Rotate Image

Mediumâś“ Solution
Accenture+35
#49

Group Anagrams

Medium✓ Solution📹 Video
Accolite+86
#54

Spiral Matrix

Mediumâś“ Solution
Accenture+49
#55

Jump Game

Medium✓ Solution📹 Video
Adobe+32
#56

Merge Intervals

Medium✓ Solution📹 Video
Accenture+111
#57

Insert Interval

Medium✓ Solution📹 Video
Amazon+15
#69

Sqrt(x)

Easy✓ Solution📹 Video
Amazon+16
#70

Climbing Stairs

Easy✓ Solution📹 Video
Accenture+36
#71

Simplify Path

Medium✓ Solution📹 Video
Amazon+23
#72

Edit Distance

Medium✓ Solution📹 Video
Amazon+23
#73

Set Matrix Zeroes

Medium✓ Solution📹 Video
Amazon+21
#74

Search a 2D Matrix

Medium✓ Solution📹 Video
Adobe+18
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About Apple Coding Interviews

Preparing for an Apple coding interview requires more than just solving random algorithm problems. Apple engineers are known for building highly optimized, user‑focused products, and their interview process reflects this mindset. Interviewers often look for candidates who can write clean, efficient code while clearly explaining their reasoning and trade‑offs.

The typical Apple technical interview evaluates strong fundamentals in data structures and algorithms (DSA). Across hundreds of real interview experiences, common topics include arrays, strings, hash maps, tree traversal, recursion, and two‑pointer techniques. Apple also frequently asks practical coding problems that resemble real engineering scenarios such as parsing data, implementing custom data structures, or optimizing memory usage.

Most candidates go through a structured process that includes a technical phone screen followed by several onsite or virtual onsite rounds. These rounds usually include multiple coding interviews, behavioral discussions, and sometimes system design for experienced roles. Interviewers emphasize clarity, problem‑solving approach, and the ability to collaborate while thinking through a solution.

The 356 Apple interview questions on FleetCode are collected from real candidate reports and categorized by difficulty so you can prepare strategically.

  • Easy questions to master fundamentals
  • Medium problems that reflect most real interview questions
  • Hard problems for advanced optimization and edge cases

Each problem includes explanations and solutions in popular languages like Python, Java, and C++. By practicing these curated problems, you can build the exact pattern recognition and coding fluency needed to succeed in an Apple software engineering interview.

Interview Tips for Apple

Apple interviews focus heavily on practical problem solving and clean coding. While the structure can vary slightly by team, most candidates experience a fairly consistent process.

Typical Apple interview format:

  • Recruiter screen: A short call discussing your background, projects, and role fit.
  • Technical phone screen (1–2 rounds): Usually a 45–60 minute coding interview using a shared editor. Expect one or two DSA problems.
  • Onsite or virtual onsite (4–6 rounds): Multiple coding rounds, team matching discussions, behavioral interviews, and sometimes system design for mid‑level and senior candidates.

Common data structure and algorithm topics at Apple:

  • Arrays and strings (very common)
  • Hash tables and frequency counting
  • Two pointers and sliding window
  • Binary trees and tree traversal
  • Recursion and backtracking
  • Graph traversal (BFS/DFS)
  • Dynamic programming for optimization problems

Compared with some companies, Apple interviewers often prefer clear, readable solutions over extremely clever tricks. They want to see how you reason through a problem and whether you can communicate your thinking effectively.

Preparation strategy:

  • Start with array and string patterns since many Apple problems are built on them.
  • Practice writing code without relying on heavy library shortcuts.
  • Focus on explaining your approach before coding.
  • After solving a problem, discuss time and space complexity and possible optimizations.

Common mistakes to avoid:

  • Jumping into coding without clarifying the problem
  • Ignoring edge cases like empty inputs or duplicates
  • Writing messy or hard‑to‑read code
  • Not communicating your thought process during the interview

Most candidates preparing for Apple spend around 6–10 weeks practicing DSA problems. Working through a curated set like the 356 Apple questions on FleetCode helps you focus on patterns that repeatedly appear in real interviews rather than studying random problems.