Solutions to LeetCode problems. I've tried to compile a list and classify problems by their types. The list below may not be updated, refer to filenames above.

• Flatten Binary Tree to Linked List
• Path Sum
• Path Sum II
• Minimum Depth of Binary Tree
• Maximum Depth of Binary Tree
• Convert Sorted Array to Binary Search Tree
• Convert Sorted List to Binary Search Tree *
• Symmetric Tree
• Same Tree
• Validate Binary Search Tree
• Binary Tree Inorder Traversal
• Binary Tree Zigzag Level Order Traversal
• Binary Tree Level Order Traversal II
• Binary Tree Level Order Traversal
• Binary Tree Maximum Path Sum *
• Balanced Binary Tree
• Sum Root to Leaf Numbers
• Unique Binary Search Trees
• Unique Binary Search Trees II *
• Recover Binary Search Tree *
• Construct Binary Tree from Inorder and Postorder Traversal
• Construct Binary Tree from Preorder and Inorder Traversal
• Populating Next Right Pointers in Each Node *
• Populating Next Right Pointers in Each Node II *

• Word Ladder *

• Remove Duplicates from Sorted Array
• Remove Duplicates from Sorted Array II
• Remove Duplicates from Sorted List
• Remove Duplicates from Sorted List II
• Merge Sorted Array
• Merge Two Sorted Lists
• Rotate List
• Remove Nth Node From End of List *
• Partition List
• Reverse Linked List II *
• Maximum Subarray
• Jump Game
• Jump Game *
• Triangle
• Pascal's Triangle
• Pascal's Triangle II
• Search in Rotated Sorted Array
• Subsets *
• Two Sum *
• Search Insert Position
• Remove Element
• Swap Nodes in Pairs
• Rotate Image *
• Permutations
• Spiral Matrix *
• Spiral Matrix II
• Search a 2D Matrix
• Single Number
• Single Number II * bitwise
• Add Two Numbers
• Insert Interval
• Merge Intervals
• Reverse Nodes in k-Group
• Copy List with Random Pointer *
• Set Matrix Zeroes
• Gas Station
• Next Permutation
• Sort Colors
• 3Sum *
• 3Sum Closest *
• Surrounded Regions
• Search for a Range
• Valid Sudoku

• Climbing Stairs
• Unique Paths
• Unique Paths II
• Decode Ways *
• Best Time to Buy and Sell Stock
• Best Time to Buy and Sell Stock II
• Best Time to Buy and Sell Stock III *
• Minimum Path Sum
• Candy
• Interleaving String
• Edit Distance

• Pow(x, n)
• Gray Code
• Roman to Integer
• Integer to Roman
• Plus One
• Generate Parentheses *
• Count and Say
• Letter Combinations of a Phone Number
• Restore IP Addresses
• Combinations

• Valid Parentheses
• Longest Valid Parentheses *
• Largest Rectangle in Histogram *
• Simplify Path

• Longest Common Prefix
• Longest Substring Without Repeating Characters
• Length of Last Word
• ZigZag Conversion
• Add Binary
• Interleaving String
• Word Break
• Anagrams

• Reverse Integer
• Palindrome Number
• Container With Most Water