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