LeetCode
Source code on github.com/gnitoahc/leetcode or visit the web version on leet.chaoting.xyz.
Algorithms
Easy
0 - 500
P1-Two_Sum
P9-Palindrome_Number
P13-Roman_to_Integer
P14-Longest_Common_Prefix
P20-Valid_Parentheses
P21-Merge_Two_Sorted_List
P26-Remove_Duplicates_from_Sorted_Array
P27-Remove_Element
P66-Plus_One
P70-Climbing_Stairs
P88-Merge_Sorted_Array
P94-Binary_Tree_Inorder_Traversal
P100-Same_Tree
P110-Balanced_Binary_Tree
P111-Minimum_Depth_of_Binary_Tree
P118-Pascal's_Triangle
P119-Pascal's_Triangle_II
P121-Best_Time_to_Buy_and_Sell_Stock
P141-Linked_List_Cycle
P160-Intersection_of_Two_Linked_Lists
P169-Majority_Element
P203-Remove_Linked_List_Elements
P217-Contains_Duplicate
P226-Invert_Binary_Tree
P242-Valid_Anagram
P326-Power_of_Three
P344-Reverse_String
P374-Guess_Number_Higher_or_Lower
P383-Ransom_Note
501 - 1000
P680-Valid_Palindrome_II
P682-Baseball_Game
P700-Search_in_a_Binary_Search_Tree
P724-Find_Pivot_Index
P733-Flood_Fill
P747-Largest_Number_At_Least_Twice_of_Others
Medium
0 - 500
P2-Add_Two_Numbers
P3-Longest_Substring_Without_Repeating_Characters
P5-Longest_Palindromic_Substring
P7-Reverse_Integer
P8-String_to_Integer(atoi)
P11-Container_With_Most_Water
P15-3Sum
P19-Remove_Nth_Node_From_End_of_List
P24-Swap_Nodes_in_Pairs
P33-Search_in_Rotated_Sorted_Array
P34-Find_First_and_Last_Position_of_Element_in_Sorted_Array
P49-Group_Anagrams
P50-Pow(x,n)
P53-Maximum_Subarray
P59-Spiral_Matrix_II
P62-Unique_Paths
P64-Minimum_Path_Sum
P74-Search_a_2D_Matrix
P79-Word_Search
P95-Unique_Binary_Search_Trees_II
P96_Unique_Binary_Search_Trees
P98-Validate_Binary_Search_Tree
P102-Binary_Tree_Level_Order_Traversal
P105-Construct_Binary_Tree_from_Preorder_and_Inorder_Traversal
P120-Triangle
P122-Best_Time_to_Buy_and_Sell_Stock_II
P128-Longest_Consecutive_Sequence
P139-Word_Break
P142-Linked_List_Cycle_II
P151-Reverse_Words_in_a_String
P152-Maximum_Product_Subarray
P153-Find_Minimum_in_Rotated_Sorted_Array
P198-House_Robber
P200-Number_of_Islands
P209-Minimum_Size_Subarray_Sum
P213-House_Robber_II
P229-Majority_Element_II
P236-Lowest_Common_Ancestor_of_a_Binary_Tree
P238-Product_of_Array_Except_Self
P274-H_index
P279-Perfect_Squares
P287-Find_the_Duplicate_Number
P300-Longest_Increasing_Subsequence
P322-Coin_Change
P328-Odd_Even_Linked_List
P377-Combination_Sum_IV
P393-UTF-8_Validation
P443-String_Compression
501 - 1000
P684-Redundant_Connection
P695-Max_Area_of_Island
P707-Design_Linked_List
P718-Maximum_Length_of_Repeated_Subarray
P739-Daily_Temperatures
P743-Network_Delay_Time
P790-Domino_and_Tromino_Tiling
P787-Cheapest_Flights_Within_K_Stops
P808-Soup_Servings
P814-Binary_Tree_Pruning
1001 - 1500
P1143-Longest_Common_Subsequence
P1262-Greatest_Sum_Divisible_by_Three
P1382-Balance_a_Binary_Search_Tree
P1456-Maximum_Number_of_Vowels_in_a_Substring_of_Given_Length
P1457-Pseudo-Palindromic_Paths_in_a_Binary_Tree
1501 - 2000
P1584-Min_Cost_to_Connect_All_Points
P1657-Determine_if_Two_Strings_Are_Close
P1679-Max_Number_of_K-Sum_Pairs
2001 - 2500
P2007-Find_Original_Array_From_Doubled_Array
P2104-Sum_of_Subarray_Ranges
P2195-Append_K_Integers_With_Minimal_Sum
P2244-Minimum_Rounds_to_Complete_All_Tasks
P2414-Length_of_the_Longest_Alphabetical_Continuous_Substring
3001 - 3500
P3111-Minimum_Rectangles_to_Cover_Points
P3112-Minimum_Time_to_Visit_Disappearing_Nodes
P3115-Maximum_Prime_Difference
Hard
0 - 500
P23-Merge_k_Sorted_Lists
P123-Best_Time_to_Buy_and_Sell_Stock_III
P124-Binary_Tree_Maximum_Path_Sum
P218-The_Skyline_Problem
P239-Sliding_Window_Maximum
1001 - 1500
P1278-Palindrome_Partitioning_III
P1489-Find_Critical_and_Pseudo-Critical_Edges_in_Minimum_Spanning_Tree
Shell
Easy
JavaScript
Easy
Database
Easy
Medium
Last updated