76 LeetCode Problems To Crack Apple

Here are 76 LeetCode Problems I will solve to crack my Apple interview.

And no, I won’t “grind 500 problems.”

I will focus on the right ones.

These are the exact problems I will practice right before my Apple interview:

1/ Arrays & Hashing

1. Two Sum

2. Pascal’s Triangle

3. Valid Anagram

4. Group Anagrams

5. Valid Sudoku

6. Spiral Matrix

2/ Two Pointers

1. Merge Sorted Array

2. Valid Palindrome

3. Rotate Array

4. Reverse Words in a String

5. String Compression

6. Trapping Rain Water

3/ Stack

1. Valid Parentheses

2. Implement Queue using Stacks

3. Remove All Adjacent Duplicates In String

4. Min Stack

5. Decode String

6. Flatten Nested List Iterator

4/ Binary Search

1. Sqrt(x)

2. Time Based Key-Value Store

3. Find First and Last Position of Element in Sorted Array

4. Search in Rotated Sorted Array

5. Snapshot Array

6. Median of Two Sorted Arrays

5/ Sliding Window

1. Contains Duplicate II

2. Longest Substring Without Repeating Characters

3. Subarray Product Less Than K

4. Find All Anagrams in a String

5. Sliding Window Maximum

6/ Linked List

1. Reverse Linked List

2. Merge Two Sorted Lists

3. LRU Cache

4. Add Two Numbers

5. Delete Node in a Linked List

6. Remove Nth Node From End of List

7/ Trees

1. Maximum Depth of Binary Tree

2. Binary Tree Paths

3. Lowest Common Ancestor of a Binary Tree

4. Binary Tree Level Order Traversal

5. Validate Binary Search Tree

6. Serialize and Deserialize Binary Tree

8/ Trie

1. Longest Common Prefix

2. Word Break

3. Implement Trie (Prefix Tree)

4. Design Add And Search Words Data Structure

9/ Backtracking

1. Generate Parentheses

2. Maximum Rows Covered by Columns

3. Permutations

4. Letter Combinations of a Phone Number

5. Word Search

6. Number of Squareful Arrays

10/ Heap (Priority Queue)

1. Top K Frequent Elements

2. Kth Largest Element in an Array

3. Task Scheduler

4. Merge k Sorted Lists

5. Find Median from Data Stream

6. Find Servers That Handled Most Number of Requests

11/ Graphs

1. Number of Islands

2. Course Schedule

3. Course Schedule II

4. Array Nesting

5. Word Ladder

12/ Intervals

1. Insert Interval

2. Interval List Intersections

3. Merge Intervals

13/ Greedy & Dynamic Programming

1. Best Time to Buy and Sell Stock

2. Maximum Subarray

3. Best Time to Buy and Sell Stock II

14/ Prefix Sum

1. Product of Array Except Self

2. Subarray Sum Equals K

3. Random Pick with Weight

15/ Miscellaneous

1. Reverse Bits

2. Climbing Stairs

3. Number of 1 Bits

4. Reverse Integer

5. Integer to English Words

If you’re preparing for FAANG in 2026, don’t forget to save this post.

Also, here’s a platform which you can use to practice for your interviews:

🔗 Interview Roadmap Platform: Link

Best of luck!