Apple vs Turing Interview Questions
Apple lists 300 LeetCode interview questions while Turing lists 37. They share 18 problems — 6% of Apple's bank and 49% of Turing's. Focus on the overlap first, then drill into 282 Apple-only and 19 Turing-only questions.
Overview
Preparation Strategy
Step 1 — Shared core: Solve the 18 overlapping problems first. These are the highest-yield questions for candidates interviewing at both Apple and Turing.
Step 2 — Company-specific depth: Add Apple-specific problems like LRU Cache, Design Hit Counter, Rotate Array and Turing-specific problems from the exclusive lists below.
Step 3 — Difficulty tuning: Apple skews harder in our data. Budget extra time for Hard problems if you are targeting that company.
Difficulty Comparison
Top Shared Topics
18 Shared Questions
High-priority problems to practice for both Apple and Turing.
| Problem | Difficulty |
|---|---|
| Two Sum | Easy |
| Number of Islands | Medium |
| Merge Intervals | Medium |
| Best Time to Buy and Sell Stock | Easy |
| Longest Common Prefix | Easy |
| Group Anagrams | Medium |
| Valid Parentheses | Easy |
| Longest Substring Without Repeating Characters | Medium |
| Product of Array Except Self | Medium |
| Kth Largest Element in an Array | Medium |
| Maximum Subarray | Medium |
| Median of Two Sorted Arrays | Hard |
| Find First and Last Position of Element in Sorted Array | Medium |
| 3Sum | Medium |
| Longest Palindromic Substring | Medium |
| Jump Game | Medium |
| Validate IP Address | Medium |
| Koko Eating Bananas | Medium |
Unique to Apple (282)
Problems in Apple's list that do not appear at Turing.
| Problem | Difficulty |
|---|---|
| LRU Cache | Medium |
| Design Hit Counter | Medium |
| Rotate Array | Medium |
| Reverse Linked List | Easy |
| Valid Sudoku | Medium |
| Top K Frequent Elements | Medium |
| Course Schedule II | Medium |
| Course Schedule | Medium |
| Valid Palindrome | Easy |
| Rotate Image | Medium |
| Reverse Words in a String | Medium |
| Spiral Matrix | Medium |
Unique to Turing (19)
Problems in Turing's list that do not appear at Apple.
Frequently Asked Questions
How many LeetCode questions do Apple and Turing share?
Apple and Turing share 18 LeetCode interview questions. 282 problems appear only in Apple's list and 19 appear only in Turing's list.
What topics overlap most between Apple and Turing?
The most common shared topics between Apple and Turing are Array (14 shared questions), String (6 shared questions), Sorting (4 shared questions), Dynamic Programming (4 shared questions), Hash Table (3 shared questions). Mastering these areas prepares you for both companies.
Which company asks harder LeetCode questions: Apple or Turing?
Apple has 76 Easy, 178 Medium, and 46 Hard questions. Turing has 10 Easy, 23 Medium, and 4 Hard questions. Apple has a higher proportion of Hard problems in its interview set.
How should I prepare if interviewing at both Apple and Turing?
Start with the 18 shared problems since they cover what both companies ask most often. Then add 20 Apple-specific and 19 Turing-specific questions to round out your prep.