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(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++      341A  Â 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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