https://leetcode.com/studyplan/top-interview-150/
- Array / String
- Merge Sorted Array Easy
- Remove Element Easy
- Remove Duplicates from Sorted Array Easy
- Remove Duplicates from Sorted Array II Medium
- Majority Element Easy
- Rotate Array Medium
- Best Time to Buy and Sell Stock Easy
- Best Time to Buy and Sell Stock II Medium
- Jump Game Medium
- Jump Game II Medium
- H-Index Medium
- Insert Delete GetRandom O(1) Medium
- Product of Array Except Self Medium
- Gas Station Medium
- Candy Hard
- Trapping Rain Water Hard
- Roman to Integer Easy
- Integer to Roman Medium
- Length of Last Word Easy
- Longest Common Prefix Easy
- Reverse Words in a String Medium
- Zigzag Conversion Medium
- Find the Index of the First Occurrence in a String Easy
- Text Justification Hard
- Two Pointers
- Valid Palindrome Easy
- Is Subsequence Easy
- Two Sum II - Input Array Is Sorted Medium
- Container With Most Water Medium
- 3Sum Medium
- Sliding Window
- Minimum Size Subarray Sum Medium
- Longest Substring Without Repeating Characters Medium
- Substring with Concatenation of All Words Hard
- Minimum Window Substring Hard
- Matrix
- Valid Sudoku Medium
- Spiral Matrix Medium
- Rotate Image Medium
- Set Matrix Zeroes Medium
- Game of Life Medium
- Hashmap
- Ransom Note Easy
- Isomorphic Strings Easy
- Word Pattern Easy
- Valid Anagram Easy
- Group Anagrams Medium
- Two Sum Easy
- Happy Number Easy
- Contains Duplicate II Easy
- Longest Consecutive Sequence Medium
- Intervals
- Summary Ranges Easy
- Merge Intervals Medium
- Insert Interval Medium
- Minimum Number of Arrows to Burst Balloons Medium
- Stack
- Valid Parentheses Easy
- Simplify Path Medium
- Min Stack Medium
- Evaluate Reverse Polish Notation Medium
- Basic Calculator Hard
- Linked List
- Linked List Cycle Easy
- Add Two Numbers Medium
- Merge Two Sorted Lists Easy
- Copy List with Random Pointer Medium
- Reverse Linked List II Medium
- Reverse Nodes in k-Group Hard
- Remove Nth Node From End of List Medium
- Remove Duplicates from Sorted List II Medium
- Rotate List Medium
- Partition List Medium
- LRU Cache Medium
- Binary Tree General
- Maximum Depth of Binary Tree Easy
- Same Tree Easy
- Invert Binary Tree Easy
- Symmetric Tree Easy
- Construct Binary Tree from Preorder and Inorder Traversal Medium
- Construct Binary Tree from Inorder and Postorder Traversal Medium
- Populating Next Right Pointers in Each Node II Medium
- Flatten Binary Tree to Linked List Medium
- Path Sum Easy
- Sum Root to Leaf Numbers Medium
- Binary Tree Maximum Path Sum Hard
- Binary Search Tree Iterator Medium
- Count Complete Tree Nodes Easy
- Lowest Common Ancestor of a Binary Tree Medium
- Binary Tree BFS
- Binary Tree Right Side View Medium
- Average of Levels in Binary Tree Easy
- Binary Tree Level Order Traversal Medium
- Binary Tree Zigzag Level Order Traversal Medium
- Binary Search Tree
- Minimum Absolute Difference in BST Easy
- Kth Smallest Element in a BST Medium
- Validate Binary Search Tree Medium
- Graph General
- Number of Islands Medium
- Surrounded Regions Medium
- Clone Graph Medium
- Evaluate Division Medium
- Course Schedule Medium
- Course Schedule II Medium
- Graph BFS
- Snakes and Ladders Medium
- Minimum Genetic Mutation Medium
- Word Ladder Hard
- Trie
- Implement Trie (Prefix Tree) Medium
- Design Add and Search Words Data Structure Medium
- Word Search II Hard
- Backtracking
- Letter Combinations of a Phone Number Medium
- Combinations Medium
- Permutations Medium
- Combination Sum Medium
- N-Queens II Hard
- Generate Parentheses Medium
- Word Search Medium
- Divide & Conquer
- Convert Sorted Array to Binary Search Tree Easy
- Sort List Medium
- Construct Quad Tree Medium
- Merge k Sorted Lists Hard
- Kadane's Algorithm
- Maximum Subarray Medium
- Maximum Sum Circular Subarray Medium
- Binary Search
- Search Insert Position Easy
- Search a 2D Matrix Medium
- Find Peak Element Medium
- Search in Rotated Sorted Array Medium
- Find First and Last Position of Element in Sorted Array Medium
- Find Minimum in Rotated Sorted Array Medium
- Median of Two Sorted Arrays Hard
- Heap
- Kth Largest Element in an Array Medium
- IPO Hard
- Find K Pairs with Smallest Sums Medium
- Find Median from Data Stream Hard
- Bit Manipulation
- Add Binary Easy
- Reverse Bits Easy
- Number of 1 Bits Easy
- Single Number Easy
- Single Number II Medium
- Bitwise AND of Numbers Range Medium
- Math
- Palindrome Number Easy
- Plus One Easy
- Factorial Trailing Zeroes Medium
- Sqrt(x) Easy
- Pow(x, n) Medium
- Max Points on a Line Hard
- 1D DP
- Climbing Stairs Easy
- House Robber Medium
- Word Break Medium
- Coin Change Medium
- Longest Increasing Subsequence Medium
- Multidimensional DP
- Triangle Medium
- Minimum Path Sum Medium
- Unique Paths II Medium
- Longest Palindromic Substring Medium
- Interleaving String Medium
- Edit Distance Medium
- Best Time to Buy and Sell Stock III Hard
- Best Time to Buy and Sell Stock IV Hard
- Maximal Square Medium