Blind 150 Problem List by Pattern (with Python & JS Practice)

Arrays & Hashing (9)

Contains Duplicate Easy Free to try — Read & practice · LeetCode ↗
Valid Anagram Easy Free to try — Read & practice · LeetCode ↗
Two Sum Easy Free to try — Read & practice · LeetCode ↗
Group Anagrams Medium — Read & practice · LeetCode ↗
Top K Frequent Elements Medium — Read & practice · LeetCode ↗
Product of Array Except Self Medium — Read & practice · LeetCode ↗
Encode and Decode Strings Medium — Read & practice · LeetCode ↗
Longest Consecutive Sequence Medium — Read & practice · LeetCode ↗
Valid Sudoku Medium — Read & practice · LeetCode ↗

Two Pointers (5)

Valid Palindrome Easy — Read & practice · LeetCode ↗
3Sum Medium — Read & practice · LeetCode ↗
Container With Most Water Medium — Read & practice · LeetCode ↗
Two Sum II Input Array Is Sorted Medium — Read & practice · LeetCode ↗
Trapping Rain Water Hard — Read & practice · LeetCode ↗

Stack (7)

Valid Parentheses Easy Free to try — Read & practice · LeetCode ↗
Min Stack Medium — Read & practice · LeetCode ↗
Evaluate Reverse Polish Notation Medium — Read & practice · LeetCode ↗
Generate Parentheses Medium — Read & practice · LeetCode ↗
Daily Temperatures Medium — Read & practice · LeetCode ↗
Car Fleet Medium — Read & practice · LeetCode ↗
Largest Rectangle In Histogram Hard — Read & practice · LeetCode ↗

Binary Search (7)

Find Minimum In Rotated Sorted Array Medium — Read & practice · LeetCode ↗
Search In Rotated Sorted Array Medium — Read & practice · LeetCode ↗
Binary Search Easy Free to try — Read & practice · LeetCode ↗
Search a 2D Matrix Medium — Read & practice · LeetCode ↗
Koko Eating Bananas Medium — Read & practice · LeetCode ↗
Time Based Key Value Store Medium — Read & practice · LeetCode ↗
Median of Two Sorted Arrays Hard — Read & practice · LeetCode ↗

Sliding Window (6)

Best Time to Buy And Sell Stock Easy Free to try — Read & practice · LeetCode ↗
Longest Substring Without Repeating Characters Medium — Read & practice · LeetCode ↗
Longest Repeating Character Replacement Medium — Read & practice · LeetCode ↗
Minimum Window Substring Hard — Read & practice · LeetCode ↗
Permutation In String Medium — Read & practice · LeetCode ↗
Sliding Window Maximum Hard — Read & practice · LeetCode ↗

Linked List (11)

Reverse Linked List Easy Free to try — Read & practice · LeetCode ↗
Merge Two Sorted Lists Easy Free to try — Read & practice · LeetCode ↗
Reorder List Medium — Read & practice · LeetCode ↗
Remove Nth Node From End of List Medium — Read & practice · LeetCode ↗
Linked List Cycle Easy — Read & practice · LeetCode ↗
Merge K Sorted Lists Hard — Read & practice · LeetCode ↗
Copy List With Random Pointer Medium — Read & practice · LeetCode ↗
Add Two Numbers Medium — Read & practice · LeetCode ↗
Find The Duplicate Number Medium — Read & practice · LeetCode ↗
LRU Cache Medium — Read & practice · LeetCode ↗
Reverse Nodes In K Group Hard — Read & practice · LeetCode ↗

Trees (15)

Invert Binary Tree Easy — Read & practice · LeetCode ↗
Maximum Depth of Binary Tree Easy Free to try — Read & practice · LeetCode ↗
Same Tree Easy — Read & practice · LeetCode ↗
Subtree of Another Tree Easy — Read & practice · LeetCode ↗
Lowest Common Ancestor of a Binary Search Tree Medium — Read & practice · LeetCode ↗
Binary Tree Level Order Traversal Medium — Read & practice · LeetCode ↗
Validate Binary Search Tree Medium — Read & practice · LeetCode ↗
Kth Smallest Element In a Bst Medium — Read & practice · LeetCode ↗
Construct Binary Tree From Preorder And Inorder Traversal Medium — Read & practice · LeetCode ↗
Binary Tree Maximum Path Sum Hard — Read & practice · LeetCode ↗
Serialize And Deserialize Binary Tree Hard — Read & practice · LeetCode ↗
Diameter of Binary Tree Easy — Read & practice · LeetCode ↗
Balanced Binary Tree Easy — Read & practice · LeetCode ↗
Binary Tree Right Side View Medium — Read & practice · LeetCode ↗
Count Good Nodes In Binary Tree Medium — Read & practice · LeetCode ↗

Tries (3)

Implement Trie Prefix Tree Medium — Read & practice · LeetCode ↗
Design Add And Search Words Data Structure Medium — Read & practice · LeetCode ↗
Word Search II Hard — Read & practice · LeetCode ↗

Heap / Priority Queue (7)

Find Median From Data Stream Hard — Read & practice · LeetCode ↗
Kth Largest Element In a Stream Easy — Read & practice · LeetCode ↗
Last Stone Weight Easy — Read & practice · LeetCode ↗
K Closest Points to Origin Medium — Read & practice · LeetCode ↗
Kth Largest Element In An Array Medium — Read & practice · LeetCode ↗
Task Scheduler Medium — Read & practice · LeetCode ↗
Design Twitter Medium — Read & practice · LeetCode ↗

Backtracking (9)

Combination Sum Medium — Read & practice · LeetCode ↗
Word Search Medium — Read & practice · LeetCode ↗
Subsets Medium — Read & practice · LeetCode ↗
Permutations Medium — Read & practice · LeetCode ↗
Subsets II Medium — Read & practice · LeetCode ↗
Combination Sum II Medium — Read & practice · LeetCode ↗
Palindrome Partitioning Medium — Read & practice · LeetCode ↗
Letter Combinations of a Phone Number Medium — Read & practice · LeetCode ↗
N Queens Hard — Read & practice · LeetCode ↗

Graphs (13)

Number of Islands Medium — Read & practice · LeetCode ↗
Clone Graph Medium — Read & practice · LeetCode ↗
Pacific Atlantic Water Flow Medium — Read & practice · LeetCode ↗
Course Schedule Medium — Read & practice · LeetCode ↗
Number of Connected Components In An Undirected Graph Medium — Read & practice · LeetCode ↗
Graph Valid Tree Medium — Read & practice · LeetCode ↗
Max Area of Island Medium — Read & practice · LeetCode ↗
Surrounded Regions Medium — Read & practice · LeetCode ↗
Rotting Oranges Medium — Read & practice · LeetCode ↗
Walls And Gates Medium — Read & practice · LeetCode ↗
Course Schedule II Medium — Read & practice · LeetCode ↗
Redundant Connection Medium — Read & practice · LeetCode ↗
Word Ladder Hard — Read & practice · LeetCode ↗

Advanced Graphs (6)

Alien Dictionary Hard — Read & practice · LeetCode ↗
Reconstruct Itinerary Hard — Read & practice · LeetCode ↗
Min Cost to Connect All Points Medium — Read & practice · LeetCode ↗
Network Delay Time Medium — Read & practice · LeetCode ↗
Swim In Rising Water Hard — Read & practice · LeetCode ↗
Cheapest Flights Within K Stops Medium — Read & practice · LeetCode ↗

1-D Dynamic Programming (12)

Climbing Stairs Easy Free to try — Read & practice · LeetCode ↗
House Robber Medium — Read & practice · LeetCode ↗
House Robber II Medium — Read & practice · LeetCode ↗
Longest Palindromic Substring Medium — Read & practice · LeetCode ↗
Palindromic Substrings Medium — Read & practice · LeetCode ↗
Decode Ways Medium — Read & practice · LeetCode ↗
Coin Change Medium — Read & practice · LeetCode ↗
Maximum Product Subarray Medium — Read & practice · LeetCode ↗
Word Break Medium — Read & practice · LeetCode ↗
Longest Increasing Subsequence Medium — Read & practice · LeetCode ↗
Min Cost Climbing Stairs Easy — Read & practice · LeetCode ↗
Partition Equal Subset Sum Medium — Read & practice · LeetCode ↗

2-D Dynamic Programming (11)

Unique Paths Medium — Read & practice · LeetCode ↗
Longest Common Subsequence Medium — Read & practice · LeetCode ↗
Best Time to Buy And Sell Stock With Cooldown Medium — Read & practice · LeetCode ↗
Coin Change II Medium — Read & practice · LeetCode ↗
Target Sum Medium — Read & practice · LeetCode ↗
Interleaving String Medium — Read & practice · LeetCode ↗
Longest Increasing Path In a Matrix Hard — Read & practice · LeetCode ↗
Distinct Subsequences Hard — Read & practice · LeetCode ↗
Edit Distance Medium — Read & practice · LeetCode ↗
Burst Balloons Hard — Read & practice · LeetCode ↗
Regular Expression Matching Hard — Read & practice · LeetCode ↗

Greedy (8)

Maximum Subarray Medium — Read & practice · LeetCode ↗
Jump Game Medium — Read & practice · LeetCode ↗
Jump Game II Medium — Read & practice · LeetCode ↗
Gas Station Medium — Read & practice · LeetCode ↗
Hand of Straights Medium — Read & practice · LeetCode ↗
Merge Triplets to Form Target Triplet Medium — Read & practice · LeetCode ↗
Partition Labels Medium — Read & practice · LeetCode ↗
Valid Parenthesis String Medium — Read & practice · LeetCode ↗

Intervals (6)

Insert Interval Medium — Read & practice · LeetCode ↗
Merge Intervals Medium — Read & practice · LeetCode ↗
Non Overlapping Intervals Medium — Read & practice · LeetCode ↗
Meeting Rooms Easy — Read & practice · LeetCode ↗
Meeting Rooms II Medium — Read & practice · LeetCode ↗
Minimum Interval to Include Each Query Hard — Read & practice · LeetCode ↗

Math & Geometry (8)

Rotate Image Medium — Read & practice · LeetCode ↗
Spiral Matrix Medium — Read & practice · LeetCode ↗
Set Matrix Zeroes Medium — Read & practice · LeetCode ↗
Happy Number Easy — Read & practice · LeetCode ↗
Plus One Easy — Read & practice · LeetCode ↗
Pow(x, n) Medium — Read & practice · LeetCode ↗
Multiply Strings Medium — Read & practice · LeetCode ↗
Detect Squares Medium — Read & practice · LeetCode ↗

Bit Manipulation (7)

Number of 1 Bits Easy — Read & practice · LeetCode ↗
Counting Bits Easy — Read & practice · LeetCode ↗
Reverse Bits Easy — Read & practice · LeetCode ↗
Missing Number Easy — Read & practice · LeetCode ↗
Sum of Two Integers Medium — Read & practice · LeetCode ↗
Single Number Easy — Read & practice · LeetCode ↗
Reverse Integer Medium — Read & practice · LeetCode ↗