Learning Roadmaps¶

Curated problem sequences for different learning goals.

Blind 75 (13 problems)¶

The famous curated list for FAANG interviews

🟢 Easy (5)¶

• 🟢 LeetCode 1 - Two Sum
• 🟢 LeetCode 21 - Merge Two Sorted Lists
• 🟢 LeetCode 26 - Remove Duplicates from Sorted Array
• 🟢 LeetCode 125 - Valid Palindrome
• 🟢 LeetCode 141 - Linked List Cycle

🟡 Medium (6)¶

• 🟡 LeetCode 3 - Longest Substring Without Repeating Characters
• 🟡 LeetCode 11 - Container With Most Water
• 🟡 LeetCode 15 - 3Sum
• 🟡 LeetCode 75 - Sort Colors
• 🟡 LeetCode 142 - Linked List Cycle II
• 🟡 LeetCode 215 - Kth Largest Element in an Array

🔴 Hard (2)¶

• 🔴 LeetCode 23 - Merge k Sorted Lists
• 🔴 LeetCode 76 - Minimum Window Substring

Graph BFS Path (1 problems)¶

Breadth-first search patterns

🟡 Medium (1)¶

• 🟡 LeetCode 994 - Rotting Oranges

Grind 75 (12 problems)¶

Updated Blind 75 with flexible scheduling

🟢 Easy (10)¶

• 🟢 LeetCode 1 - Two Sum
• 🟢 LeetCode 21 - Merge Two Sorted Lists
• 🟢 LeetCode 26 - Remove Duplicates from Sorted Array
• 🟢 LeetCode 27 - Remove Element
• 🟢 LeetCode 88 - Merge Sorted Array
• 🟢 LeetCode 125 - Valid Palindrome
• 🟢 LeetCode 141 - Linked List Cycle
• 🟢 LeetCode 283 - Move Zeroes
• 🟢 LeetCode 876 - Middle of the Linked List
• 🟢 LeetCode 977 - Squares of a Sorted Array

🟡 Medium (1)¶

• 🟡 LeetCode 3 - Longest Substring Without Repeating Characters

🔴 Hard (1)¶

• 🔴 LeetCode 76 - Minimum Window Substring

LeetCode Top 100 (8 problems)¶

Most liked problems on LeetCode

🟢 Easy (2)¶

• 🟢 LeetCode 1 - Two Sum
• 🟢 LeetCode 21 - Merge Two Sorted Lists

🟡 Medium (4)¶

• 🟡 LeetCode 2 - Add Two Numbers
• 🟡 LeetCode 3 - Longest Substring Without Repeating Characters
• 🟡 LeetCode 11 - Container With Most Water
• 🟡 LeetCode 15 - 3Sum

🔴 Hard (2)¶

• 🔴 LeetCode 4 - Median of Two Sorted Arrays
• 🔴 LeetCode 23 - Merge k Sorted Lists

NeetCode 150 (32 problems)¶

Comprehensive coverage of essential patterns

🟢 Easy (14)¶

• 🟢 LeetCode 1 - Two Sum
• 🟢 LeetCode 21 - Merge Two Sorted Lists
• 🟢 LeetCode 26 - Remove Duplicates from Sorted Array
• 🟢 LeetCode 27 - Remove Element
• 🟢 LeetCode 88 - Merge Sorted Array
• 🟢 LeetCode 125 - Valid Palindrome
• 🟢 LeetCode 141 - Linked List Cycle
• 🟢 LeetCode 202 - Happy Number
• 🟢 LeetCode 283 - Move Zeroes
• 🟢 LeetCode 680 - Valid Palindrome II
• 🟢 LeetCode 876 - Middle of the Linked List
• 🟢 LeetCode 905 - Sort Array By Parity
• 🟢 LeetCode 922 - Sort Array By Parity II
• 🟢 LeetCode 977 - Squares of a Sorted Array

🟡 Medium (13)¶

• 🟡 LeetCode 2 - Add Two Numbers
• 🟡 LeetCode 3 - Longest Substring Without Repeating Characters
• 🟡 LeetCode 11 - Container With Most Water
• 🟡 LeetCode 15 - 3Sum
• 🟡 LeetCode 16 - 3Sum Closest
• 🟡 LeetCode 75 - Sort Colors
• 🟡 LeetCode 80 - Remove Duplicates from Sorted Array II
• 🟡 LeetCode 142 - Linked List Cycle II
• 🟡 LeetCode 209 - Minimum Size Subarray Sum
• 🟡 LeetCode 215 - Kth Largest Element in an Array
• 🟡 LeetCode 438 - Find All Anagrams in a String
• 🟡 LeetCode 567 - Permutation in String
• 🟡 LeetCode 994 - Rotting Oranges

🔴 Hard (5)¶

• 🔴 LeetCode 4 - Median of Two Sorted Arrays
• 🔴 LeetCode 23 - Merge k Sorted Lists
• 🔴 LeetCode 25 - Reverse Nodes in k-Group
• 🔴 LeetCode 51 - N-Queens
• 🔴 LeetCode 76 - Minimum Window Substring

Sliding Window Path (6 problems)¶

Master the sliding window technique

🟡 Medium (5)¶

• 🟡 LeetCode 3 - Longest Substring Without Repeating Characters
• 🟡 LeetCode 209 - Minimum Size Subarray Sum
• 🟡 LeetCode 340 - Longest Substring with At Most K Distinct Characters
• 🟡 LeetCode 438 - Find All Anagrams in a String
• 🟡 LeetCode 567 - Permutation in String

🔴 Hard (1)¶

• 🔴 LeetCode 76 - Minimum Window Substring