LeetCode

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.

Trees

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 *

Graphs

Word Ladder *

Arrays, Lists

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

Dynamic Programming

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

Recursion

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

Stacks

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

Strings

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

Others

Reverse Integer
Palindrome Number
Container With Most Water

Name		Name	Last commit message	Last commit date
Latest commit History 89 Commits
.gitignore		.gitignore
3Sum.cpp		3Sum.cpp
3Sum_Closest.cpp		3Sum_Closest.cpp
Add_Binary.cpp		Add_Binary.cpp
Add_Two_Numbers.cpp		Add_Two_Numbers.cpp
Anagrams.cpp		Anagrams.cpp
Balanced_Binary_Tree.cpp		Balanced_Binary_Tree.cpp
Best_Time_to_Buy_and_Sell_Stock.cpp		Best_Time_to_Buy_and_Sell_Stock.cpp
Best_Time_to_Buy_and_Sell_Stock_II.cpp		Best_Time_to_Buy_and_Sell_Stock_II.cpp
Best_Time_to_Buy_and_Sell_Stock_III.cpp		Best_Time_to_Buy_and_Sell_Stock_III.cpp
Binary_Tree_Inorder_Traversal.cpp		Binary_Tree_Inorder_Traversal.cpp
Binary_Tree_Level_Order_Traversal.cpp		Binary_Tree_Level_Order_Traversal.cpp
Binary_Tree_Level_Order_Traversal_II.cpp		Binary_Tree_Level_Order_Traversal_II.cpp
Binary_Tree_Maximum_Path_Sum.cpp		Binary_Tree_Maximum_Path_Sum.cpp
Binary_Tree_Zigzag_Level_Order_Traversal.cpp		Binary_Tree_Zigzag_Level_Order_Traversal.cpp
Candy.cpp		Candy.cpp
Climbing_Stairs.cpp		Climbing_Stairs.cpp
Combinations.cpp		Combinations.cpp
Construct_Binary_Tree_from_Inorder_and_Postorder_Traversal.cpp		Construct_Binary_Tree_from_Inorder_and_Postorder_Traversal.cpp
Construct_Binary_Tree_from_Preorder_and_Inorder_Traversal.cpp		Construct_Binary_Tree_from_Preorder_and_Inorder_Traversal.cpp
Container_With_Most_Water.cpp		Container_With_Most_Water.cpp
Convert_Sorted_Array_to_Binary_Search_Tree.cpp		Convert_Sorted_Array_to_Binary_Search_Tree.cpp
Convert_Sorted_List_to_Binary_Search_Tree.cpp		Convert_Sorted_List_to_Binary_Search_Tree.cpp
Copy_List_with_Random_Pointer.cpp		Copy_List_with_Random_Pointer.cpp
Count_and_Say.cpp		Count_and_Say.cpp
Decode_Ways.cpp		Decode_Ways.cpp
Edit_Distance.cpp		Edit_Distance.cpp
Flatten_Binary_Tree_to_Linked_List.cpp		Flatten_Binary_Tree_to_Linked_List.cpp
Gas_Station.cpp		Gas_Station.cpp
Generate_Parentheses.cpp		Generate_Parentheses.cpp
Gray_Code.cpp		Gray_Code.cpp
Insert_Interval.cpp		Insert_Interval.cpp
Integer_to_Roman.cpp		Integer_to_Roman.cpp
Interleaving_String.cpp		Interleaving_String.cpp
Jump_Game.cpp		Jump_Game.cpp
Jump_Game_II.cpp		Jump_Game_II.cpp
Largest_Rectangle_in_Histogram.cpp		Largest_Rectangle_in_Histogram.cpp
Length_of_Last_Word.cpp		Length_of_Last_Word.cpp
Letter_Combinations_of_a_Phone_Number.cpp		Letter_Combinations_of_a_Phone_Number.cpp
Longest_Common_Prefix.cpp		Longest_Common_Prefix.cpp
Longest_Substring_Without_Repeating_Characters.cpp		Longest_Substring_Without_Repeating_Characters.cpp
Longest_Valid_Parentheses.cpp		Longest_Valid_Parentheses.cpp
Maximum_Depth_of_Binary_Tree.cpp		Maximum_Depth_of_Binary_Tree.cpp
Maximum_Subarray.cpp		Maximum_Subarray.cpp
Merge_Intervals.cpp		Merge_Intervals.cpp
Merge_Sorted_Array.cpp		Merge_Sorted_Array.cpp
Merge_Two_Sorted_Lists.cpp		Merge_Two_Sorted_Lists.cpp
Merge_k_Sorted_Lists.cpp		Merge_k_Sorted_Lists.cpp
Minimum_Depth_of_Binary_Tree.cpp		Minimum_Depth_of_Binary_Tree.cpp
Minimum_Path_Sum.cpp		Minimum_Path_Sum.cpp
Next_Permutation.cpp		Next_Permutation.cpp
Palindrome_Number.cpp		Palindrome_Number.cpp
Partition_List.cpp		Partition_List.cpp
Pascal's_Triangle.cpp		Pascal's_Triangle.cpp
Pascal's_Triangle_II.cpp		Pascal's_Triangle_II.cpp
Path_Sum.cpp		Path_Sum.cpp
Path_Sum_II.cpp		Path_Sum_II.cpp
Permutations.cpp		Permutations.cpp
Plus_One.cpp		Plus_One.cpp
Populating_Next_Right_Pointers_in_Each_Node.cpp		Populating_Next_Right_Pointers_in_Each_Node.cpp
Populating_Next_Right_Pointers_in_Each_Node_II.cpp		Populating_Next_Right_Pointers_in_Each_Node_II.cpp
Pow(x, n).cpp		Pow(x, n).cpp
README.md		README.md
Recover_Binary_Search_Tree.cpp		Recover_Binary_Search_Tree.cpp
Remove_Duplicates_from_Sorted_Array.cpp		Remove_Duplicates_from_Sorted_Array.cpp
Remove_Duplicates_from_Sorted_Array_II.cpp		Remove_Duplicates_from_Sorted_Array_II.cpp
Remove_Duplicates_from_Sorted_List.cpp		Remove_Duplicates_from_Sorted_List.cpp
Remove_Duplicates_from_Sorted_List_II.cpp		Remove_Duplicates_from_Sorted_List_II.cpp
Remove_Element.cpp		Remove_Element.cpp
Remove_Nth_Node_From_End_of_List.cpp		Remove_Nth_Node_From_End_of_List.cpp
Restore_IP_Addresses.cpp		Restore_IP_Addresses.cpp
Reverse_Integer.cpp		Reverse_Integer.cpp
Reverse_Linked_List_II.cpp		Reverse_Linked_List_II.cpp
Reverse_Nodes_in_k-Group.cpp		Reverse_Nodes_in_k-Group.cpp
Roman_to_Integer.cpp		Roman_to_Integer.cpp
Rotate_Image.cpp		Rotate_Image.cpp
Rotate_List.cpp		Rotate_List.cpp
Same_Tree.cpp		Same_Tree.cpp
Search_Insert_Position.cpp		Search_Insert_Position.cpp
Search_a_2D_Matrix.cpp		Search_a_2D_Matrix.cpp
Search_for_a_Range.cpp		Search_for_a_Range.cpp
Search_in_Rotated_Sorted_Array.cpp		Search_in_Rotated_Sorted_Array.cpp
Set_Matrix_Zeroes.cpp		Set_Matrix_Zeroes.cpp
Simplify_Path.cpp		Simplify_Path.cpp
Single_Number.cpp		Single_Number.cpp
Single_Number_II.cpp		Single_Number_II.cpp
Sort_Colors.cpp		Sort_Colors.cpp
Spiral_Matrix.cpp		Spiral_Matrix.cpp
Spiral_Matrix_II.cpp		Spiral_Matrix_II.cpp
Subsets.cpp		Subsets.cpp
Sum_Root_to_Leaf_Numbers.cpp		Sum_Root_to_Leaf_Numbers.cpp
Surrounded_Regions.cpp		Surrounded_Regions.cpp
Swap_Nodes_in_Pairs.cpp		Swap_Nodes_in_Pairs.cpp
Symmetric_Tree.cpp		Symmetric_Tree.cpp
Triangle.cpp		Triangle.cpp
Two_Sum.cpp		Two_Sum.cpp
Unique_Binary_Search_Trees.cpp		Unique_Binary_Search_Trees.cpp
Unique_Binary_Search_Trees_II.cpp		Unique_Binary_Search_Trees_II.cpp
Unique_Paths.cpp		Unique_Paths.cpp
Unique_Paths_II.cpp		Unique_Paths_II.cpp

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