Apple Software Engineer Coding & Algorithms Interview Questions
Practice 41 real Coding & Algorithms interview questions for Software Engineer roles at Apple.
"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"
"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"
"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."
"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."
"Got a Google recruiter call on Monday, interview on Friday. Crammed PracHub for 4 days. Passed every round. This platform is a miracle worker."
"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."
"The solution quality is insane. It covers approach, edge cases, time complexity, follow-ups. Nothing else comes close."
"Legit the only resource you need. TC went from 180k -> 350k. Just memorize the top 50 for your target company and you're golden."
"PracHub Premium for one month cost me the price of two coffees a week. It landed me a $280K+ starting offer."
"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."
"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."
"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."
"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."
"I recently cleared Uber interviews (strong hire in the design round) and all the questions were present in prachub."
"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."
Find the K Closest Pairs in a Sorted Array
Implement k_closest_pairs(nums, k) for a strictly increasing sorted array. Consider every pair of indices (i, j) with i < j. Its distance is nums[j] -...
Determine Whether an Undirected Graph Is Two-Colorable
Determine Whether an Undirected Graph Is Two-Colorable Given an undirected graph with nodes labeled 0 through n - 1, determine whether every node can ...
Solve three easy algorithm problems
You are given three independent algorithmic tasks. For each one, explain your approach (no need to run code). 1) Merge two sorted lists (integers inst...
Minimal Unique Word Abbreviations
Minimal Unique Word Abbreviations You are given an array words of n distinct strings. Produce a minimal abbreviation for every word according to the r...
Implement flood fill using BFS and DFS
This question evaluates proficiency in graph traversal and matrix manipulation, specifically the implementation of BFS and DFS variants for flood fill...
Implement a FIFO Queue Using Two Stacks
Implement a FIFO Queue Using Two Stacks Implement a first-in-first-out (FIFO) queue using only two last-in-first-out (LIFO) stacks. The implemented qu...
Solve interval, grid-fill, and heap tasks
You are asked to solve the following algorithmic problems. Problem 1: Concurrent users from online intervals You are given n inclusive time intervals ...
Minimum Cells to Bridge a Magic Grid
This question evaluates proficiency in graph traversal and shortest-path optimization within a 2D grid, testing the ability to find minimum-cost conne...
Vertical Order Traversal of a Binary Tree
Vertical Order Traversal of a Binary Tree You are given the root of a binary tree. Return the vertical order traversal of its nodes' values — that is,...
Convert a Roman Numeral to an Integer
Convert a Roman Numeral to an Integer Roman numerals are written with seven symbols, each with a fixed integer value: | Symbol | Value | |--------|---...
Solve 15 common Apple coding questions
The post summarizes high-frequency coding problems reported for Apple Software Engineer interviews. Practice the following algorithm and data-structur...
Find top-k frequent elements efficiently
Given an array (or stream) of integers and an integer k, return any ordering of the k most frequent values. Implement a solution using a heap and disc...
Compute top three scores per student
Compute top three scores per student You are given a list of (student_id, score) records. Return, for each student, their highest three scores in desc...
Implement deep clone for complex objects
Implement a deep-clone function for nested objects in JavaScript (or a language of your choice) without using JSON serialization or third-party librar...
Refactor rock–paper–scissors for config and ties
Refactor an existing Rock–Paper–Scissors tournament with three robot players so that the number of rounds is configurable and the system also tracks t...
Compute Earliest Bus Arrival
This question evaluates proficiency with shortest-path algorithms and time-dependent graph modeling, focusing on reasoning about travel times combined...
Implement a debounce function
This question evaluates a candidate's ability to implement a debounce utility using runtime features such as closures, timers, and function-context pr...
Merge overlapping time intervals
This question evaluates competence in interval and array manipulation, sorting-based algorithm design, overlap detection, and efficient time/space com...
Solve linked list, grid BFS, and median queries
This multi-part question evaluates proficiency in in-place linked list manipulation, reasoning about shortest connections between connected components...
Implement rotation, LRU cache, streaming median, cycle detection
Complete the following coding tasks. For each, provide code, justify time/space complexity, and describe edge cases: 1) Image rotation: Given an n×n i...