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forked from illuz/leetcode

(229 / 280) [中文|English] Solutions and notes of LEETCODE using C++/Java/Python/Sql/Shell Script.

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LeetCode Solutions by illuz

Updating....

My stupid How to LeetCode.

This is my leetcode solution folder. :)
Language: C++/Java/Python/Sql/Shell Script

If there was something wrong, can contact me at iilluzen in google's email.


Links:

Leetcode Algorithms Problems
Leetcode Database Problems
Leetcode Shell Problems


Problems

There are 333 problems (54 problems for a fee).

I have solved 229 / 279 problems.=w=

# Problems Solutions Note
001 001.Two_Sum Java Python C++ Notes
002 002.Add_Two_Numbers C++ Python Java Notes
003 003.Longest_Substring_Without_Repeat... Java Python C++ Notes
004 004.Median_of_Two_Sorted_Arrays Java Python C++ Notes
005 005.Longest_Palindromic_Substring Java Python C++ Notes
006 006.ZigZag_Conversion C++ Python Java Notes
007 007.Reverse_Integer C++ Python Java Notes
008 008.String_to_Integer C++ Python Java Notes
009 009.Palindrome_Number Java Python C++ Notes
010 010.Regular_Expression_Matching C++ Python Java Notes
011 011.Container_With_Most_Water Java Python C++ Notes
012 012.Integer_to_Roman Java Python C++ Notes
013 013.Roman_to_Integer Java Python C++ Notes
014 014.Longest_Common_Prefix C++ Python Java Notes
015 015.3Sum C++ Python Java Notes
016 016.3Sum_Closest C++ Python Java Notes
017 017.Letter_Combinations_of_a_Phone_Number C++ Python Java Notes
018 018.4Sum C++ Python Java Notes
019 019.Remove_Nth_Node_From_End_of_List Python C++ Notes
020 020.Valid_Parentheses C++ Python Java Notes
021 021.Merge_Two_Sorted_Lists Python C++ Notes
022 022.Generate_Parentheses C++ Python Java Notes
023 023.Merge_k_Sorted_Lists Java Python C++ Notes
024 024.Swap_Nodes_in_Pairs Python C++ Notes
025 025.Reverse_Nodes_in_k-Group Java C++ Notes
026 026.Remove_Duplicates_from_Sorted_Array C++ Notes
027 027.Remove_Element C++ Notes
028 028.Implement_strStr() Python C++ Notes
029 029.Divide_Two_Integers Python C++ Notes
030 030.Substring_with_Concatenation_of_... C++ Java Notes
031 031.Next_Permutation Python C++ Notes
032 032.Longest_Valid_Parentheses C++ Notes
033 033.Search_in_Rotated_Sorted_Array C++ Notes
034 034.Search_for_a_Range Java C++ Notes
035 035.Search_Insert_Position C++ Notes
036 036.Valid_Sudoku C++ Notes
037 037.Sudoku_Solver C++ Notes
038 038.Count_and_Say Python C++ Notes
039 039.Combination_Sum C++ Notes
040 040.Combination_Sum_II C++ Notes
041 041.First_Missing_Positive C++ Coming soon
042 042.Trapping_Rain_Water C++ Coming soon
043 043.Multiply_Strings C++ Coming soon
044 044.Wildcard_Matching C++ Coming soon
045 045.Jump_Game_II C++ Coming soon
046 046.Permutations C++ Coming soon
047 047.Permutations_II C++ Coming soon
048 048.Rotate_Image C++ Coming soon
049 049.Anagrams C++ Coming soon
050 050.Pow(x,_n) C++ Coming soon
051 051.N-Queens C++ Python Java Coming soon
052 052.N-Queens_II C++ Python Java Coming soon
053 053.Maximum_Subarray C++ Coming soon
054 054.Spiral_Matrix C++ Coming soon
055 055.Jump_Game C++ Coming soon
056 056.Merge_Intervals C++ Coming soon
057 057.Insert_Interval C++ Coming soon
058 058.Length_of_Last_Word C++ Coming soon
059 059.Spiral_Matrix_II C++ Coming soon
060 060.Permutation_Sequence C++ Coming soon
061 061.Rotate_List C++ Coming soon
062 062.Unique_Paths C++ Coming soon
063 063.Unique_Paths_II C++ Coming soon
064 064.Minimum_Path_Sum C++ Coming soon
065 065.Valid_Number Java Python C++ Coming soon
066 066.Plus_One C++ Coming soon
067 067.Add_Binary C++ Coming soon
068 068.Text_Justification C++ Python Java Notes
069 069.Sqrt(x) C++ Python Java Coming soon
070 070.Climbing_Stairs C++ Coming soon
071 071.Simplify_Path C++ Python Java Coming soon
072 072.Edit_Distance C++ Coming soon
073 073.Set_Matrix_Zeroes C++ Coming soon
074 074.Search_a_2D_Matrix C++ Coming soon
075 075.Sort_Colors C++ Coming soon
076 076.Minimum_Window_Substring C++ Notes
077 077.Combinations C++ Coming soon
078 078.Subsets Java Python C++ Coming soon
079 079.Word_Search C++ Coming soon
080 080.Remove_Duplicates_from_Sorted_Array_II C++ Coming soon
081 081.Search_in_Rotated_Sorted_Array_II C++ Coming soon
082 082.Remove_Duplicates_from_Sorted_List_II C++ Coming soon
083 083.Remove_Duplicates_from_Sorted_List C++ Coming soon
084 084.Largest_Rectangle_in_Histogram Java C++ Notes
085 085.Maximal_Rectangle Java C++ Notes
086 086.Partition_List C++ Python Java Coming soon
087 087.Scramble_String C++ Python Java Notes
088 088.Merge_Sorted_Array C++ Coming soon
089 089.Gray_Code C++ Python Java Coming soon
090 090.Subsets_II C++ Python Java Coming soon
091 091.Decode_Ways Java Python C++ Coming soon
092 092.Reverse_Linked_List_II C++ Coming soon
093 093.Restore_IP_Addresses C++ Python Java Notes
094 094.Binary_Tree_Inorder_Traversal C++ Coming soon
095 095.Unique_Binary_Search_Trees C++ Notes
096 096.Unique_Binary_Search_Trees_II C++ Notes
097 097.Interleaving_String Java C++ Notes
098 098.Validate_Binary_Search_Tree Java Python C++ Notes
099 099.Recover_Binary_Search_Tree Python C++ Notes
100 100.Same_Tree C++ Coming soon
101 101.Symmetric_Tree C++ Coming soon
102 102.Binary_Tree_Level_Order_Traversal Python C++ Notes
103 103.Binary_Tree_Zigzag_Level_Order_Traversal Python C++ Notes
104 104.Maximum_Depth_of_Binary_Tree C++ Coming soon
105 105.Construct_Binary_Tree_from_Preor... C++ Notes
106 106.Construct_Binary_Tree_from_Inord... C++ Notes
107 107.Binary_Tree_Level_Order_Traversal_II Python C++ Notes
108 108.Convert_Sorted_Array_to_Binary_S... C++ Notes
109 109.Convert_Sorted_List_to_Binary_Se... Python C++ Notes
110 110.Balanced_Binary_Tree C++ Coming soon
111 111.Minimum_Depth_of_Binary_Tree C++ Coming soon
112 112.Path_Sum C++ Coming soon
113 113.Path_Sum_II Java Python C++ Coming soon
114 114.Flatten_Binary_Tree_to_Linked_List Java C++ Notes
115 115.Distinct_Subsequences Python C++ Notes
116 116.Populating_Next_Right_Pointers_i... C++ Python Java Coming soon
117 117.Populating_Next_Right_Pointers_i... C++ Python Java Coming soon
118 118.Pascal's_Triangle C++ Coming soon
119 119.Pascal's_Triangle_II C++ Coming soon
120 120.Triangle Java Python C++ Coming soon
121 121.Best_Time_to_Buy_and_Sell_Stock Python C++ Notes
122 122.Best_Time_to_Buy_and_Sell_Stock_II Python C++ Notes
123 123.Best_Time_to_Buy_and_Sell_Stock_III Python C++ Notes
124 124.Binary_Tree_Maximum_Path_Sum Python C++ Notes
125 125.Valid_Palindrome C++ Coming soon
126 126.Word_Ladder Python C++ Notes
126 126.Word_Ladder_II Coming soon
127 127.Word_Ladder Coming soon
128 128.Longest_Consecutive_Sequence Coming soon
129 129.Sum_Root_to_Leaf_Numbers C++ Coming soon
130 130.Surrounded_Regions C++ Notes
131 131.Palindrome_Partitioning Python C++ Notes
132 132.Palindrome_Partitioning_II C++ Java Notes
133 133.Clone_Graph C++ Coming soon
134 134.Gas_Station C++ Notes
135 135.Candy Coming soon
136 136.Single_Number C++ Notes
137 137.Single_Number_II C++ Coming soon
138 138.Copy_List_with_Random_Pointer Java Python C++ Notes
139 139.Word_Break Python C++ Notes
140 140.Word_Break_II Coming soon
141 141.Linked_List_Cycle C++ Coming soon
142 142.Linked_List_Cycle_II Coming soon
143 143.Reorder_List C++ Coming soon
144 144.Binary_Tree_Preorder_Traversal C++ Coming soon
145 145.Binary_Tree_Postorder_Traversal C++ Coming soon
146 146.LRU_Cache Python C++ Notes
147 147.Insertion_Sort_List C++ Coming soon
148 148.Sort_List C++ Notes
149 149.Max_Points_on_a_Line Coming soon
150 150.Evaluate_Reverse_Polish_Notation Java Python C++ Notes
151 151.Reverse_Words_in_a_String C++ Python Java Notes
152 152.Maximum_Product_Subarray C++ Coming soon
153 153.Find_Minimum_in_Rotated_Sorted_Array C++ Notes
154 154.Find_Minimum_in_Rotated_Sorted_Array_II Python C++ Notes
155 155.Min_Stack C++ Notes
156 156.Binary_Tree_Upside_Down $ Not Buy Not Buy
157 157.Read_N_Characters_Given_Read4 $ Not Buy Not Buy
158 158.Read_N_Characters_Given_Read4_II... $ Not Buy Not Buy
159 159.Longest_Substring_with_At_Most_T... $ Not Buy Not Buy
160 160.Intersection_of_Two_Linked_Lists C++ Coming soon
161 161.One_Edit_Distance $ Not Buy Not Buy
162 162.Find_Peak_Element C++ Python Java Coming soon
163 163.Missing_Ranges $ Not Buy Not Buy
164 164.Maximum_Gap C++ Notes
165 165.Compare_Version_Numbers C++ Coming soon
166 166.Fraction_to_Recurring_Decimal C++ Notes
167 167.Two_Sum_II_-_Input_array_is_sorted $ Not Buy Not Buy
168 168.Excel_Sheet_Column_Title Java Python C++ Coming soon
169 169.Majority_Element Java Python C++ Coming soon
170 170.Two_Sum_III_-_Data_structure_design $ Not Buy Not Buy
171 171.Excel_Sheet_Column_Number Java Python C++ Coming soon
172 172.Factorial_Trailing_Zeroes Java Python C++ Coming soon
173 173.Binary_Search_Tree_Iterator Python C++ Notes
174 174.Dungeon_Game Coming soon
175 175.Combine_Two_Tables Sql Coming soon
176 176.Second_Highest_Salary Sql Coming soon
177 177.Nth_Highest_Salary Sql Notes
178 178.Rank_Scores Sql Notes
179 179.Largest_Number Java Python C++ Coming soon
180 180.Consecutive_Numbers Sql Notes
181 181.Employees_Earning_More_Than_Thei... Sql Coming soon
182 182.Duplicate_Emails Sql Coming soon
183 183.Customers_Who_Never_Order Sql Notes
184 184.Department_Highest_Salary Sql Notes
186 186.Reverse_Words_in_a_String_II $ Not Buy Not Buy
187 187.Repeated_DNA_Sequences C++ Python Java Coming soon
188 188.Best_Time_to_Buy_and_Sell_Stock_IV C++ Notes
189 189.Rotate_Array C++ Notes
190 190.Reverse_Bits C++ Python Java Notes
191 191.Number_of_1_Bits C++ Java Notes
192 192.Word_Frequency Shell Notes
193 193.Valid_Phone_Numbers Shell Notes
194 194.Transpose_File Shell Notes
195 195.Tenth_Line Shell Notes
196 196.Delete_Duplicate_Emails Sql Coming soon
197 197.Rising_Temperature Sql Notes
198 198.House_Robber C++ Notes
199 199.Binary_Tree_Right_Side_View Python C++ Notes
200 200.Number_of_Islands C++ Notes
201 201.Bitwise_AND_of_Numbers_Range Python C++ Notes
202 202.Happy_Number Python C++ Notes
203 203.Remove_Linked_List_Elements C++ Python Java Notes
204 204.Count_Primes C++ Coming soon
205 205.Isomorphic_Strings Python C++ Notes
206 206.Reverse_Linked_List C++ Coming soon
207 207.Course_Schedule Python C++ Notes
208 208.Implement_Trie_(Prefix_Tree) C++ Notes
209 209.Minimum_Size_Subarray_Sum C++ Coming soon
210 210.Course_Schedule_II Python C++ Notes
211 211.Add_and_Search_Word_-_Data_struc... Coming soon
212 212.Word_Search_II Coming soon
213 213.House_Robber_II Coming soon
214 214.Shortest_Palindrome Coming soon
215 215.Kth_Largest_Element_in_an_Array C++ Python Java Notes
216 216.Combination_Sum_III C++ Notes
217 217.Contains_Duplicate Python C++ Notes
218 218.The_Skyline_Problem Coming soon
219 219.Contains_Duplicate_II C++ Notes
220 220.Contains_Duplicate_III C++ Java Notes
221 221.Maximal_Square Python C++ Notes
222 222.Count_Complete_Tree_Nodes Python C++ Notes
223 223.Rectangle_Area C++ Notes
224 224.Basic_Calculator Java C++ Notes
225 225.Implement_Stack_using_Queues Java C++ Notes
226 226.Invert_Binary_Tree Python C++ Notes
227 227.Basic_Calculator_II Coming soon
228 228.Summary_Ranges Python C++ Notes
229 229.Majority_Element_II Coming soon
230 230.Kth_Smallest_Element_in_a_BST C++ Notes
231 231.Power_of_Two Python C++ Notes
232 232.Implement_Queue_using_Stacks Python C++ Notes
233 233.Number_of_Digit_One Coming soon
234 234.Palindrome_Linked_List Java Python C++ Notes
235 235.Lowest_Common_Ancestor_of_a_Bina... Python C++ Notes
236 236.Lowest_Common_Ancestor_of_a_Binary_Tree Coming soon
237 237.Delete_Node_in_a_Linked_List Python C++ Notes
238 238.Product_of_Array_Except_Self Java Python C++ Notes
239 239.Sliding_Window_Maximum Python C++ Notes
240 240.Search_a_2D_Matrix_II Coming soon
241 241.Different_Ways_to_Add_Parentheses Python C++ Notes
242 242.Valid_Anagram Python C++ Notes
243 243.Shortest_Word_Distance $ Not Buy Not Buy
244 244.Shortest_Word_Distance_II $ Not Buy Not Buy
245 245.Shortest_Word_Distance_III $ Not Buy Not Buy
246 246.Strobogrammatic_Number $ Not Buy Not Buy
247 247.Strobogrammatic_Number_II $ Not Buy Not Buy
248 248.Strobogrammatic_Number_III $ Not Buy Not Buy
249 249.Group_Shifted_Strings $ Not Buy Not Buy
250 250.Count_Univalue_Subtrees $ Not Buy Not Buy
251 251.Flatten_2D_Vector $ Not Buy Not Buy
252 252.Meeting_Rooms $ Not Buy Not Buy
253 253.Meeting_Rooms_II $ Not Buy Not Buy
254 254.Factor_Combinations $ Not Buy Not Buy
255 255.Verify_Preorder_Sequence_in_Bina... $ Not Buy Not Buy
256 256.Paint_House $ Not Buy Not Buy
257 257.Binary_Tree_Paths Python C++ Notes
258 258.Add_Digits Python C++ Notes
259 259.3Sum_Smaller $ Not Buy Not Buy
260 260.Single_Number_III Coming soon
261 261.Graph_Valid_Tree $ Not Buy Not Buy
263 263.Ugly_Number Python C++ Notes
264 264.Ugly_Number_II Coming soon
265 265.Paint_House_II $ Not Buy Not Buy
266 266.Palindrome_Permutation $ Not Buy Not Buy
267 267.Palindrome_Permutation_II $ Not Buy Not Buy
268 268.Missing_Number C++ Python Java Notes
269 269.Alien_Dictionary $ Not Buy Not Buy
270 270.Closest_Binary_Search_Tree_Value $ Not Buy Not Buy
271 271.Encode_and_Decode_Strings $ Not Buy Not Buy
272 272.Closest_Binary_Search_Tree_Value_II $ Not Buy Not Buy
273 273.Integer_to_English_Words Coming soon
274 274.H-Index Coming soon
275 275.H-Index_II Coming soon
276 276.Paint_Fence $ Not Buy Not Buy
277 277.Find_the_Celebrity $ Not Buy Not Buy
278 278.First_Bad_Version Python C++ Notes
279 279.Perfect_Squares Python C++ Notes
280 280.Wiggle_Sort $ Not Buy Not Buy
281 281.Zigzag_Iterator $ Not Buy Not Buy
282 282.Expression_Add_Operators Coming soon
283 283.Move_Zeroes C++ Notes
284 284.Peeking_Iterator Coming soon
285 285.Inorder_Successor_in_BST $ Not Buy Not Buy
286 286.Walls_and_Gates $ Not Buy Not Buy
287 287.Find_the_Duplicate_Number Coming soon
288 288.Unique_Word_Abbreviation $ Not Buy Not Buy
289 289.Game_of_Life Python C++ Notes
290 290.Word_Pattern Python C++ Notes
291 291.Word_Pattern_II $ Not Buy Not Buy
292 292.Nim_Game C++ Notes
293 293.Flip_Game $ Not Buy Not Buy
294 294.Flip_Game_II $ Not Buy Not Buy
295 295.Find_Median_from_Data_Stream Coming soon
296 296.Best_Meeting_Point $ Not Buy Not Buy
297 297.Serialize_and_Deserialize_Binary_Tree Coming soon
298 298.Binary_Tree_Longest_Consecutive_Sequence $ Not Buy Not Buy
299 299.Bulls_and_Cows C++ Coming soon
300 300.Longest_Increasing_Subsequence Coming soon
301 301.Remove_Invalid_Parentheses Coming soon
302 302.Smallest_Rectangle_Enclosing_Bla... $ Not Buy Not Buy
303 303.Range_Sum_Query_-_Immutable Coming soon
304 304.Range_Sum_Query_2D_-_Immutable Coming soon
305 305.Number_of_Islands_II $ Not Buy Not Buy
306 306.Additive_Number Coming soon
307 307.Range_Sum_Query_-_Mutable Coming soon
308 308.Range_Sum_Query_2D_-_Mutable $ Not Buy Not Buy
309 309.Best_Time_to_Buy_and_Sell_Stock_... Coming soon
310 310.Minimum_Height_Trees Coming soon
311 311.Sparse_Matrix_Multiplication $ Not Buy Not Buy
312 312.Burst_Balloons Coming soon
313 313.Super_Ugly_Number Coming soon
314 314.Binary_Tree_Vertical_Order_Traversal $ Not Buy Not Buy
315 315.Count_of_Smaller_Numbers_After_Self Coming soon
316 316.Remove_Duplicate_Letters Coming soon
317 317.Shortest_Distance_from_All_Buildings $ Not Buy Not Buy
318 318.Maximum_Product_of_Word_Lengths Coming soon
319 319.Bulb_Switcher Coming soon
320 320.Generalized_Abbreviation $ Not Buy Not Buy
321 321.Create_Maximum_Number Coming soon
322 322.Coin_Change Coming soon
323 323.Number_of_Connected_Components_i... $ Not Buy Not Buy
324 324.Wiggle_Sort_II Coming soon
325 325.Maximum_Size_Subarray_Sum_Equals_k $ Not Buy Not Buy
326 326.Power_of_Three C++ Python Java Notes
327 327.Count_of_Range_Sum Coming soon
328 328.Odd_Even_Linked_List Python C++ Notes
329 329.Longest_Increasing_Path_in_a_Matrix Coming soon
330 330.Patching_Array Coming soon
331 331.Verify_Preorder_Serialization_of... Coming soon
332 332.Reconstruct_Itinerary Coming soon
333 333.Largest_BST_Subtree $ Not Buy Not Buy
334 334.Increasing_Triplet_Subsequence C++ Notes

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