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063. Minimum Path Sum
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277 Commits
000. Two Sum
000. Two Sum
 
 
001. Add Two Numbers
001. Add Two Numbers
 
 
002. Longest Substring Without Repeating Characters
002. Longest Substring Without Repeating Characters
 
 
004. Longest Palindromic Substring
004. Longest Palindromic Substring
 
 
005. ZigZag Conversion
005. ZigZag Conversion
 
 
006. Reverse Integer
006. Reverse Integer
 
 
007. Linked List Cycle
007. Linked List Cycle
 
 
008. Palindrome Number
008. Palindrome Number
 
 
009. Regular Expression Matching
009. Regular Expression Matching
 
 
010. Container With Most Water
010. Container With Most Water
 
 
011. Integer to Roman
011. Integer to Roman
 
 
012. Roman to Integer
012. Roman to Integer
 
 
013. Longest Common Prefix
013. Longest Common Prefix
 
 
015. 3Sum Closest
015. 3Sum Closest
 
 
016. Letter Combinations of a Phone Number
016. Letter Combinations of a Phone Number
 
 
017. 4Sum
017. 4Sum
 
 
018. Remove Nth Node from End of List
018. Remove Nth Node from End of List
 
 
019. Valid Parentheses
019. Valid Parentheses
 
 
020. Merge Two Sorted Lists
020. Merge Two Sorted Lists
 
 
021. Generate Parentheses
021. Generate Parentheses
 
 
022. Merge k Sorted Lists
022. Merge k Sorted Lists
 
 
023. Swap Nodes in Pairs
023. Swap Nodes in Pairs
 
 
024. Reverse Nodes in k-Group
024. Reverse Nodes in k-Group
 
 
025. Remove Duplicates from Sorted Array
025. Remove Duplicates from Sorted Array
 
 
026. Remove Element
026. Remove Element
 
 
027. Implement strStr()
027. Implement strStr()
 
 
030. Next Permutation
030. Next Permutation
 
 
032. Search in Rotated Sorted Array
032. Search in Rotated Sorted Array
 
 
033. Search for a Range
033. Search for a Range
 
 
034. Search Insert Position
034. Search Insert Position
 
 
035. Valid Sudoku
035. Valid Sudoku
 
 
036. Sudoku Solver
036. Sudoku Solver
 
 
037. Count and Say
037. Count and Say
 
 
038. Combination Sum
038. Combination Sum
 
 
039. Combination Sum II
039. Combination Sum II
 
 
040. First Missing Positive
040. First Missing Positive
 
 
041. Trapping Rain Water
041. Trapping Rain Water
 
 
042. Multiply Strings
042. Multiply Strings
 
 
044. Jump Game II
044. Jump Game II
 
 
045. Permutations
045. Permutations
 
 
046. Permutations II
046. Permutations II
 
 
047. Rotate Image
047. Rotate Image
 
 
048. Group Anagrams
048. Group Anagrams
 
 
049. Pow(x, n)
049. Pow(x, n)
 
 
050. N-Queens
050. N-Queens
 
 
051. N-Queens II
051. N-Queens II
 
 
052. Maximum Subarray
052. Maximum Subarray
 
 
053. Spiral Matrix
053. Spiral Matrix
 
 
054. Jump Game
054. Jump Game
 
 
055. Merge Intervals
055. Merge Intervals
 
 
056. Insert Interval
056. Insert Interval
 
 
057. Length of Last Word
057. Length of Last Word
 
 
058. Spiral Matrix II
058. Spiral Matrix II
 
 
059. Permutation Sequence
059. Permutation Sequence
 
 
060. Rotate List
060. Rotate List
 
 
061. Unique Paths
061. Unique Paths
 
 
062. Unique Paths II
062. Unique Paths II
 
 
063. Minimum Path Sum
 
 
065. Plus One
065. Plus One
 
 
066. Add Binary
066. Add Binary
 
 
068. Sqrt(x)
068. Sqrt(x)
 
 
069. Climbing Stairs
069. Climbing Stairs
 
 
070. Simplify Path
070. Simplify Path
 
 
071. Edit Distance
071. Edit Distance
 
 
072. Set Matrix Zeroes
072. Set Matrix Zeroes
 
 
073. Search a 2D Matrix
073. Search a 2D Matrix
 
 
074. Sort Colors
074. Sort Colors
 
 
076. Combinations
076. Combinations
 
 
077. Subsets
077. Subsets
 
 
079. Remove Duplicates from Sorted Array II
079. Remove Duplicates from Sorted Array II
 
 
080. Search in Rotated Sorted Array II
080. Search in Rotated Sorted Array II
 
 
081. Remove Duplicates from Sorted List II
081. Remove Duplicates from Sorted List II
 
 
082. Remove Duplicates from Sorted List
082. Remove Duplicates from Sorted List
 
 
083. Largest Rectangle in Histogram
083. Largest Rectangle in Histogram
 
 
084. Maximal Rectangle
084. Maximal Rectangle
 
 
085. Partition List
085. Partition List
 
 
086. Scramble String
086. Scramble String
 
 
087. Merge Sorted Array
087. Merge Sorted Array
 
 
088. Gray Code
088. Gray Code
 
 
089. Subsets II
089. Subsets II
 
 
090. Insertion Sort List
090. Insertion Sort List
 
 
091. Reverse Linked List II
091. Reverse Linked List II
 
 
092. Restore IP Addresses
092. Restore IP Addresses
 
 
093. Binary Tree Inorder Traversal
093. Binary Tree Inorder Traversal
 
 
094. Unique Binary Search Trees II
094. Unique Binary Search Trees II
 
 
095. Unique Binary Search Trees
095. Unique Binary Search Trees
 
 
097. Validate Binary Search Tree
097. Validate Binary Search Tree
 
 
098. Recover Binary Search Tree
098. Recover Binary Search Tree
 
 
099. Same Tree
099. Same Tree
 
 
100. Symmetric Tree
100. Symmetric Tree
 
 
101. Binary Tree Level Order Traversal
101. Binary Tree Level Order Traversal
 
 
102. Binary Tree Zigzag Level Order Traversal
102. Binary Tree Zigzag Level Order Traversal
 
 
103. Maximum Depth of Binary Tree
103. Maximum Depth of Binary Tree
 
 
104. Construct Binary Tree from Preorder and Inorder Traversal
104. Construct Binary Tree from Preorder and Inorder Traversal
 
 
105. Construct Binary Tree from Inorder and Postorder Traversal
105. Construct Binary Tree from Inorder and Postorder Traversal
 
 
106. Binary Tree Level Order Traversal II
106. Binary Tree Level Order Traversal II
 
 
107. Convert Sorted Array to Binary Search Tree
107. Convert Sorted Array to Binary Search Tree
 
 
108. Convert Sorted List to Binary Search Tree
108. Convert Sorted List to Binary Search Tree
 
 
109. Balanced Binary Tree
109. Balanced Binary Tree
 
 
110. Minimum Depth of Binary Tree
110. Minimum Depth of Binary Tree
 
 

Repository files navigation

LeetCode

LeetCode solutions in C++ 11 and Python3.

Note
NO. Title Solution Note Difficulty Tag
0 Two Sum C++ Python Note Easy Mapping
1 Add Two Numbers C++ Python Note Medium LinkedList
2 Longest Substring Without Repeating Characters C++ Python Note Medium Mapping
3 Median of Two Sorted Arrays C++ Python Note Hard
4 Longest Palindromic Substring C++ Python Note Medium
5 ZigZag Conversion C++ Python Note Medium
6 Reverse Integer C++ Python Note Easy
7 String to Integer (atoi) C++ Python Note Medium
8 Palindrome Number C++ Python Note Easy
9 Regular Expression Matching C++ Python Note Hard
10 Container With Most Water C++ Python Note Medium
11 Integer to Roman C++ Python Note Medium
12 Roman to Integer C++ Python Note Easy
13 Longest Common Prefix C++ Python Note Easy
14 3Sum C++ Python Note Medium
15 3Sum Closest C++ Python Note Medium
16 Letter Combinations of a Phone Number C++ Python Note Medium
17 4Sum C++ Python Note Medium
18 Remove Nth Node From End of List C++ Python Note Medium
19 Valid Parentheses C++ Python Note Easy
20 Merge Two Sorted Lists C++ Python Note Easy
21 Generate Parentheses C++ Python Note Medium
22 Merge k Sorted Lists C++ Python Note Hard
23 Swap Nodes in Pairs C++ Python Note Medium
24 Reverse Nodes in k-Group C++ Python Note Hard
25 Remove Duplicates from Sorted Array C++ Python Note Easy
26 Remove Element C++ Python Note Easy
27 Implement strStr() C++ Python Note Easy
28 Divide Two Integers C++ Python Note Medium
29 Substring with Concatenation of All Words C++ Python Note Hard
30 Next Permutation C++ Python Note Medium
31 Longest Valid Parentheses C++ Python Note Hard
32 Search in Rotated Sorted Array C++ Python Note Medium
33 Search for a Range C++ Python Note Medium
34 Search Insert Position C++ Python Note Easy
35 Valid Sudoku C++ Python Note Medium
36 Sudoku Solver C++ Python Note Hard
37 Count and Say C++ Python Note Easy
38 Combination Sum C++ Python Note Medium
39 Combination Sum II C++ Python Note Medium
40 First Missing Positive C++ Python Note Hard
41 Trapping Rain Water C++ Python Note Hard
42 Multiply Strings C++ Python Note Medium
43 Wildcard Matching C++ Python Note Hard
44 Jump Game II C++ Python Note Hard
45 Permutations C++ Python Note Medium
46 Permutations II C++ Python Note Medium
47 Rotate Image C++ Python Note Medium
48 Group Anagrams C++ Python Note Medium
49 Pow(x, n) C++ Python Note Medium
50 N-Queens C++ Python Note Hard
51 N-Queens II C++ Python Note Hard
52 Maximum Subarray C++ Python Note Easy
53 Spiral Matrix C++ Python Note Medium
54 Jump Game C++ Python Note Medium
55 Merge Intervals C++ Python Note Medium
56 Insert Interval C++ Python Note Hard
57 Length of Last Word C++ Python Note Easy
58 Spiral Matrix II C++ Python Note Medium
59 Permutation Sequence C++ Python Note Medium
60 Rotate List C++ Python Note Medium
61 Unique Paths C++ Python Note Medium
62 Unique Paths II C++ Python Note Medium
63 Minimum Path Sum C++ Python Note Medium
64 Valid Number C++ Python Note Hard
65 Plus One C++ Python Note Easy
66 Add Binary C++ Python Note Easy
67 Text Justification C++ Python Note Hard
68 Sqrt(x) C++ Python Note Easy
69 Climbing Stairs C++ Python Note Easy
70 Simplify Path C++ Python Note Medium
71 Edit Distance C++ Python Note Hard
72 Set Matrix Zeroes C++ Python Note Medium
73 Search a 2D Matrix C++ Python Note Medium
74 Sort Colors C++ Python Note Medium
75 Minimum Window Substring C++ Python Note Hard
76 Combinations C++ Python Note Medium
77 Subsets C++ Python Note Medium
78 Word Search C++ Python Note Medium
79 Remove Duplicates from Sorted Array II C++ Python Note Medium
80 Search in Rotated Sorted Array II C++ Python Note Medium
81 Remove Duplicates from Sorted List II C++ Python Note Medium
82 Remove Duplicates from Sorted List C++ Python Note Easy
83 Largest Rectangle in Histogram C++ Python Note Hard
84 Maximal Rectangle C++ Python Note Hard
85 Partition List C++ Python Note Medium
86 Scramble String C++ Python Hard
87 Merge Sorted Array C++ Python Note Easy
88 Gray Code C++ Python Note Medium
89 Subsets II C++ Python Note Medium
90 Decode Ways C++ Python Note Medium
91 Reverse Linked List II C++ Python Note Medium
92 Restore IP Addresses C++ Python Note Medium
93 Binary Tree Inorder Traversal C++ Python Note Medium
94 Unique Binary Search Trees II C++ Python Note Medium
95 Unique Binary Search Trees C++ Python Note Medium
96 Interleaving String C++ Python Note Hard
97 Validate Binary Search Tree C++ Python Note Medium
98 Recover Binary Search Tree C++ Python Note Hard
99 Same Tree C++ Python Note Easy
100 Symmetric Tree C++ Python Note Easy
101 Binary Tree Level Order Traversal C++ Python Note Medium
102 Binary Tree Zigzag Level Order Traversal C++ Python Note Medium
103 Maximum Depth of Binary Tree C++ Python Note Easy
104 Construct Binary Tree from Preorder and Inorder Traversal C++ Python Note Medium
105 Construct Binary Tree from Inorder and Postorder Traversal C++ Python Note Medium
106 Binary Tree Level Order Traversal II C++ Python Note Easy
107 Convert Sorted Array to Binary Search Tree C++ Python Note Easy
108 Convert Sorted List to Binary Search Tree C++ Python Note Medium
109 Balanced Binary Tree C++ Python Note Easy
110 Minimum Depth of Binary Tree C++ Python Note Easy
111 Path Sum C++ Python Note Easy
112 Path Sum II C++ Python Note Medium
113 Flatten Binary Tree to Linked List C++ Python Note Medium
114 Distinct Subsequences C++ Python Note Hard
115 Populating Next Right Pointers in Each Node C++ Python Note Medium
116 Populating Next Right Pointers in Each Node II C++ Python Note Medium
117 Pascal's Triangle C++ Python Note Easy
118 Pascal's Triangle II C++ Python Note Easy
119 Triangle C++ Python Note Medium
120 Best Time to Buy and Sell Stock C++ Python Note Easy
121 Best Time to Buy and Sell Stock II C++ Python Note Easy
122 Best Time to Buy and Sell Stock III C++ Python Note Hard
123 Binary Tree Maximum Path Sum C++ Python Note Hard
124 Valid Palindrome C++ Python Note Easy
125 Word Ladder II C++ Python Note Hard
126 Word Ladder C++ Python Note Medium
127 Longest Consecutive Sequence C++ Python Note Hard
128 Sum Root to Leaf Numbers C++ Python Note Medium
129 Surrounded Regions C++ Python Note Medium
130 Palindrome Partitioning C++ Python Note Medium
131 Palindrome Partitioning II C++ Python Note Hard
132 Clone Graph C++ Python Note Medium
133 Gas Station C++ Python Note Medium
134 Candy C++ Python Note Hard
135 Single Number C++ Python Note Easy
136 Single Number II C++ Python Note Medium
137 Copy List with Random Pointer C++ Python Note Medium
138 Word Break C++ Python Note Medium
139 Word Break II C++ Python Note Hard
140 Linked List Cycle C++ Python Note Easy
141 Linked List Cycle II C++ Python Note Medium
142 Reorder List C++ Python Note Medium
143 Binary Tree Preorder Traversal C++ Python Note Medium
144 Binary Tree Postorder Traversal C++ Python Note Hard
145 LRU Cache C++ Python Note Hard
146 Insertion Sort List C++ Python Note Medium
147 Sort List C++ Python Note Medium
148 Max Points on a Line C++ Python Note Hard
149 Evaluate Reverse Polish Notation C++ Python Note Medium
150 Reverse Words in a String C++ Python Note Medium
151 Maximum Product Subarray C++ Python Note Medium
152 Find Minimum in Rotated Sorted Array C++ Python Note Medium
153 Find Minimum in Rotated Sorted Array II C++ Python Note Hard
154 Min Stack C++ Python Note Easy
155 Binary Tree Upside Down C++ Python Note None
156 Read N Characters Given Read4 C++ Python Note None
157 Read N Characters Given Read4 II - Call multiple times C++ Python Note None
158 Longest Substring with At Most Two Distinct Characters C++ Python Note None
159 Intersection of Two Linked Lists C++ Python Note Easy
160 One Edit Distance C++ Python Note None
161 Find Peak Element C++ Python Note Medium
162 Missing Ranges C++ Python Note None
163 Maximum Gap C++ Python Note Hard
164 Compare Version Numbers C++ Python Note Medium
165 Fraction to Recurring Decimal C++ Python Note Medium
166 Two Sum II - Input array is sorted C++ Python Note Easy
167 Excel Sheet Column Title C++ Python Note Easy
168 Majority Element C++ Python Note Easy
169 Two Sum III - Data structure design C++ Python Note None
170 Excel Sheet Column Number C++ Python Note Easy
171 Factorial Trailing Zeroes C++ Python Note Easy
172 Binary Search Tree Iterator C++ Python Note Medium
173 Dungeon Game C++ Python Note Hard
174 Combine Two Tables C++ Python Note Easy
175 Second Highest Salary C++ Python Note Easy
176 Nth Highest Salary C++ Python Note Medium
177 Rank Scores C++ Python Note Medium
178 Largest Number C++ Python Note Medium
179 Consecutive Numbers C++ Python Note Medium
180 Employees Earning More Than Their Managers C++ Python Note Easy
181 Duplicate Emails C++ Python Note Easy
182 Customers Who Never Order C++ Python Note Easy
183 Department Highest Salary C++ Python Note Medium
184 Department Top Three Salaries C++ Python Note Hard
185 Reverse Words in a String II C++ Python Note None
186 Repeated DNA Sequences C++ Python Note Medium
187 Best Time to Buy and Sell Stock IV C++ Python Note Hard
188 Rotate Array C++ Python Note Easy
189 Reverse Bits C++ Python Note Easy
190 Number of 1 Bits C++ Python Note Easy
191 Word Frequency C++ Python Note Medium
192 Valid Phone Numbers C++ Python Note Easy
193 Transpose File C++ Python Note Medium
194 Tenth Line C++ Python Note Easy
195 Delete Duplicate Emails C++ Python Note Easy
196 Rising Temperature C++ Python Note Easy
197 House Robber C++ Python Note Easy
198 Binary Tree Right Side View C++ Python Note Medium
199 Number of Islands C++ Python Note Medium
200 Bitwise AND of Numbers Range C++ Python Note Medium
201 Happy Number C++ Python Note Easy
202 Remove Linked List Elements C++ Python Note Easy
203 Count Primes C++ Python Note Easy
204 Isomorphic Strings C++ Python Note Easy
205 Reverse Linked List C++ Python Note Easy
206 Course Schedule C++ Python Note Medium
207 Implement Trie (Prefix Tree) C++ Python Note Medium
208 Minimum Size Subarray Sum C++ Python Note Medium
209 Course Schedule II C++ Python Note Medium
210 Add and Search Word - Data structure design C++ Python Note Medium
211 Word Search II C++ Python Note Hard
212 House Robber II C++ Python Note Medium
213 Shortest Palindrome C++ Python Note Hard
214 Kth Largest Element in an Array C++ Python Note Medium
215 Combination Sum III C++ Python Note Medium
216 Contains Duplicate C++ Python Note Easy
217 The Skyline Problem C++ Python Note Hard
218 Contains Duplicate II C++ Python Note Easy
219 Contains Duplicate III C++ Python Note Medium
220 Maximal Square C++ Python Note Medium
221 Count Complete Tree Nodes C++ Python Note Medium
222 Rectangle Area C++ Python Note Medium
223 Basic Calculator C++ Python Note Hard
224 Implement Stack using Queues C++ Python Note Easy
225 Invert Binary Tree C++ Python Note Easy
226 Basic Calculator II C++ Python Note Medium
227 Summary Ranges C++ Python Note Medium
228 Majority Element II C++ Python Note Medium
229 Kth Smallest Element in a BST C++ Python Note Medium
230 Power of Two C++ Python Note Easy
231 Implement Queue using Stacks C++ Python Note Easy
232 Number of Digit One C++ Python Note Hard
233 Palindrome Linked List C++ Python Note Easy
234 Lowest Common Ancestor of a Binary Search Tree C++ Python Note Easy
235 Lowest Common Ancestor of a Binary Tree C++ Python Note Medium
236 Delete Node in a Linked List C++ Python Note Easy
237 Product of Array Except Self C++ Python Note Medium
238 Sliding Window Maximum C++ Python Note Hard
239 Search a 2D Matrix II C++ Python Note Medium
240 Different Ways to Add Parentheses C++ Python Note Medium
241 Valid Anagram C++ Python Note Easy
242 Shortest Word Distance C++ Python Note None
243 Shortest Word Distance II C++ Python Note None
244 Shortest Word Distance III C++ Python Note None
245 Strobogrammatic Number C++ Python Note None
246 Strobogrammatic Number II C++ Python Note None
247 Strobogrammatic Number III C++ Python Note None
248 Group Shifted Strings C++ Python Note None
249 Count Univalue Subtrees C++ Python Note None
250 Flatten 2D Vector C++ Python Note None
251 Meeting Rooms C++ Python Note None
252 Meeting Rooms II C++ Python Note None
253 Factor Combinations C++ Python Note None
254 Verify Preorder Sequence in Binary Search Tree C++ Python Note None
255 Paint House C++ Python Note None
256 Binary Tree Paths C++ Python Note Easy
257 Add Digits C++ Python Note Easy
258 3Sum Smaller C++ Python Note None
259 Single Number III C++ Python Note Medium
260 Graph Valid Tree C++ Python Note None
261 Trips and Users C++ Python Note Hard
262 Ugly Number C++ Python Note Easy
263 Ugly Number II C++ Python Note Medium
264 Paint House II C++ Python Note None
265 Palindrome Permutation C++ Python Note None
266 Palindrome Permutation II C++ Python Note None
267 Missing Number C++ Python Note Easy
268 Alien Dictionary C++ Python Note None
269 Closest Binary Search Tree Value C++ Python Note None
270 Encode and Decode Strings C++ Python Note None
271 Closest Binary Search Tree Value II C++ Python Note None
272 Integer to English Words C++ Python Note Hard
273 H-Index C++ Python Note Medium
274 H-Index II C++ Python Note Medium
275 Paint Fence C++ Python Note None
276 Find the Celebrity C++ Python Note None
277 First Bad Version C++ Python Note Easy
278 Perfect Squares C++ Python Note Medium
279 Wiggle Sort C++ Python Note None
280 Zigzag Iterator C++ Python Note None
281 Expression Add Operators C++ Python Note Hard
282 Move Zeroes C++ Python Note Easy
283 Peeking Iterator C++ Python Note Medium
284 Inorder Successor in BST C++ Python Note None
285 Walls and Gates C++ Python Note None
286 Find the Duplicate Number C++ Python Note Medium
287 Unique Word Abbreviation C++ Python Note None
288 Game of Life C++ Python Note Medium
289 Word Pattern C++ Python Note Easy
290 Word Pattern II C++ Python Note None
291 Nim Game C++ Python Note Easy
292 Flip Game C++ Python Note None
293 Flip Game II C++ Python Note None
294 Find Median from Data Stream C++ Python Note Hard
295 Best Meeting Point C++ Python Note None
296 Serialize and Deserialize Binary Tree C++ Python Note Hard
297 Binary Tree Longest Consecutive Sequence C++ Python Note None
298 Bulls and Cows C++ Python Note Medium
299 Longest Increasing Subsequence C++ Python Note Medium
300 Remove Invalid Parentheses C++ Python Note Hard
301 Smallest Rectangle Enclosing Black Pixels C++ Python Note None
302 Range Sum Query - Immutable C++ Python Note Easy
303 Range Sum Query 2D - Immutable C++ Python Note Medium
304 Number of Islands II C++ Python Note None
305 Additive Number C++ Python Note Medium
306 Range Sum Query - Mutable C++ Python Note Medium
307 Range Sum Query 2D - Mutable C++ Python Note None
308 Best Time to Buy and Sell Stock with Cooldown C++ Python Note Medium
309 Minimum Height Trees C++ Python Note Medium
310 Sparse Matrix Multiplication C++ Python Note None
311 Burst Balloons C++ Python Note Hard
312 Super Ugly Number C++ Python Note Medium
313 Binary Tree Vertical Order Traversal C++ Python Note None
314 Count of Smaller Numbers After Self C++ Python Note Hard
315 Remove Duplicate Letters C++ Python Note Hard
316 Shortest Distance from All Buildings C++ Python Note None
317 Maximum Product of Word Lengths C++ Python Note Medium
318 Bulb Switcher C++ Python Note Medium
319 Generalized Abbreviation C++ Python Note None
320 Create Maximum Number C++ Python Note Hard
321 Coin Change C++ Python Note Medium
322 Number of Connected Components in an Undirected Graph C++ Python Note None
323 Wiggle Sort II C++ Python Note Medium
324 Maximum Size Subarray Sum Equals k C++ Python Note None
325 Power of Three C++ Python Note Easy
326 Count of Range Sum C++ Python Note Hard
327 Odd Even Linked List C++ Python Note Medium
328 Longest Increasing Path in a Matrix C++ Python Note Hard
329 Patching Array C++ Python Note Hard
330 Verify Preorder Serialization of a Binary Tree C++ Python Note Medium
331 Reconstruct Itinerary C++ Python Note Medium
332 Largest BST Subtree C++ Python Note None
333 Increasing Triplet Subsequence C++ Python Note Medium
334 Self Crossing C++ Python Note Hard
335 Palindrome Pairs C++ Python Note Hard
336 House Robber III C++ Python Note Medium
337 Counting Bits C++ Python Note Medium
338 Nested List Weight Sum C++ Python Note None
339 Longest Substring with At Most K Distinct Characters C++ Python Note None
340 Flatten Nested List Iterator C++ Python Note Medium
341 Power of Four C++ Python Note Easy
342 Integer Break C++ Python Note Medium
343 Reverse String C++ Python Note Easy
344 Reverse Vowels of a String C++ Python Note Easy
345 Moving Average from Data Stream C++ Python Note None
346 Top K Frequent Elements C++ Python Note Medium
347 Design Tic-Tac-Toe C++ Python Note None
348 Intersection of Two Arrays C++ Python Note Easy
349 Intersection of Two Arrays II C++ Python Note Easy
350 Android Unlock Patterns C++ Python Note None
351 Data Stream as Disjoint Intervals C++ Python Note Hard
352 Design Snake Game C++ Python Note None
353 Russian Doll Envelopes C++ Python Note Hard
354 Design Twitter C++ Python Note Medium
355 Line Reflection C++ Python Note None
356 Count Numbers with Unique Digits C++ Python Note Medium
357 Rearrange String k Distance Apart C++ Python Note None
358 Logger Rate Limiter C++ Python Note None
359 Sort Transformed Array C++ Python Note None
360 Bomb Enemy C++ Python Note None
361 Design Hit Counter C++ Python Note None
362 Max Sum of Rectangle No Larger Than K C++ Python Note Hard
363 Nested List Weight Sum II C++ Python Note None
364 Water and Jug Problem C++ Python Note Medium
365 Find Leaves of Binary Tree C++ Python Note None
366 Valid Perfect Square C++ Python Note Easy
367 Largest Divisible Subset C++ Python Note Medium
368 Plus One Linked List C++ Python Note None
369 Range Addition C++ Python Note None
370 Sum of Two Integers C++ Python Note Easy
371 Super Pow C++ Python Note Medium
372 Find K Pairs with Smallest Sums C++ Python Note Medium
373 Guess Number Higher or Lower C++ Python Note Easy
374 Guess Number Higher or Lower II C++ Python Note Medium
375 Wiggle Subsequence C++ Python Note Medium
376 Combination Sum IV C++ Python Note Medium
377 Kth Smallest Element in a Sorted Matrix C++ Python Note Medium
378 Design Phone Directory C++ Python Note None
379 Insert Delete GetRandom O(1) C++ Python Note Medium
380 Insert Delete GetRandom O(1) - Duplicates allowed C++ Python Note Hard
381 Linked List Random Node C++ Python Note Medium
382 Ransom Note C++ Python Note Easy
383 Shuffle an Array C++ Python Note Medium
384 Mini Parser C++ Python Note Medium
385 Lexicographical Numbers C++ Python Note Medium
386 First Unique Character in a String C++ Python Note Easy
387 Longest Absolute File Path C++ Python Note Medium
388 Find the Difference C++ Python Note Easy
389 Elimination Game C++ Python Note Medium
390 Perfect Rectangle C++ Python Note Hard
391 Is Subsequence C++ Python Note Medium
392 UTF-8 Validation C++ Python Note Medium
393 Decode String C++ Python Note Medium
394 Longest Substring with At Least K Repeating Characters C++ Python Note Medium
395 Rotate Function C++ Python Note Medium
396 Integer Replacement C++ Python Note Medium
397 Random Pick Index C++ Python Note Medium
398 Evaluate Division C++ Python Note Medium
399 Nth Digit C++ Python Note Easy
400 Binary Watch C++ Python Note Easy
401 Remove K Digits C++ Python Note Medium
402 Frog Jump C++ Python Note Hard
403 Sum of Left Leaves C++ Python Note Easy
404 Convert a Number to Hexadecimal C++ Python Note Easy
405 Queue Reconstruction by Height C++ Python Note Medium
406 Trapping Rain Water II C++ Python Note Hard
407 Valid Word Abbreviation C++ Python Note None
408 Longest Palindrome C++ Python Note Easy
409 Split Array Largest Sum C++ Python Note Hard
410 Minimum Unique Word Abbreviation C++ Python Note None
411 Fizz Buzz C++ Python Note Easy
412 Arithmetic Slices C++ Python Note Medium
413 Third Maximum Number C++ Python Note Easy
414 Add Strings C++ Python Note Easy
415 Partition Equal Subset Sum C++ Python Note Medium
416 Pacific Atlantic Water Flow C++ Python Note Medium
417 Sentence Screen Fitting C++ Python Note None
418 Battleships in a Board C++ Python Note Medium
419 Strong Password Checker C++ Python Note Hard
420 Maximum XOR of Two Numbers in an Array C++ Python Note Medium
421 Valid Word Square C++ Python Note None
422 Reconstruct Original Digits from English C++ Python Note Medium
423 Longest Repeating Character Replacement C++ Python Note Medium
424 Word Squares C++ Python Note None
425 All O'one Data Structure C++ Python Note Hard
426 Minimum Genetic Mutation C++ Python Note Medium
427 Number of Segments in a String C++ Python Note Easy
428 Non-overlapping Intervals C++ Python Note Medium
429 Find Right Interval C++ Python Note Medium
430 Path Sum III C++ Python Note Easy
431 Find All Anagrams in a String C++ Python Note Easy
432 Ternary Expression Parser C++ Python Note None
433 K-th Smallest in Lexicographical Order C++ Python Note Hard
434 Arranging Coins C++ Python Note Easy
435 Find All Duplicates in an Array C++ Python Note Medium
436 String Compression C++ Python Note Easy
437 Sequence Reconstruction C++ Python Note None
438 Add Two Numbers II C++ Python Note Medium
439 Arithmetic Slices II - Subsequence C++ Python Note Hard
440 Number of Boomerangs C++ Python Note Easy
441 Find All Numbers Disappeared in an Array C++ Python Note Easy
442 Serialize and Deserialize BST C++ Python Note Medium
443 Delete Node in a BST C++ Python Note Medium
444 Sort Characters By Frequency C++ Python Note Medium
445 Minimum Number of Arrows to Burst Balloons C++ Python Note Medium
446 Minimum Moves to Equal Array Elements C++ Python Note Easy
447 4Sum II C++ Python Note Medium
448 Assign Cookies C++ Python Note Easy
449 132 Pattern C++ Python Note Medium
450 Circular Array Loop C++ Python Note Medium
451 Poor Pigs C++ Python Note Easy
452 Repeated Substring Pattern C++ Python Note Easy
453 LFU Cache C++ Python Note Hard
454 Hamming Distance C++ Python Note Easy
455 Minimum Moves to Equal Array Elements II C++ Python Note Medium
456 Island Perimeter C++ Python Note Easy
457 Can I Win C++ Python Note Medium
458 Optimal Account Balancing C++ Python Note None
459 Count The Repetitions C++ Python Note Hard
460 Unique Substrings in Wraparound String C++ Python Note Medium
461 Validate IP Address C++ Python Note Medium
462 Convex Polygon C++ Python Note None
463 Encode String with Shortest Length C++ Python Note None
464 Concatenated Words C++ Python Note Hard
465 Matchsticks to Square C++ Python Note Medium
466 Ones and Zeroes C++ Python Note Medium
467 Heaters C++ Python Note Easy
468 Number Complement C++ Python Note Easy
469 Total Hamming Distance C++ Python Note Medium
470 Largest Palindrome Product C++ Python Note Easy
471 Sliding Window Median C++ Python Note Hard
472 Magical String C++ Python Note Medium
473 License Key Formatting C++ Python Note Easy
474 Smallest Good Base C++ Python Note Hard
475 Find Permutation C++ Python Note None
476 Max Consecutive Ones C++ Python Note Easy
477 Predict the Winner C++ Python Note Medium
478 Max Consecutive Ones II C++ Python Note None
479 Zuma Game C++ Python Note Hard
480 The Maze C++ Python Note None
481 Increasing Subsequences C++ Python Note Medium
482 Construct the Rectangle C++ Python Note Easy
483 Reverse Pairs C++ Python Note Hard
484 Target Sum C++ Python Note Medium
485 Teemo Attacking C++ Python Note Medium
486 Next Greater Element I C++ Python Note Easy
487 Diagonal Traverse C++ Python Note Medium
488 The Maze III C++ Python Note None
489 Keyboard Row C++ Python Note Easy
490 Find Mode in Binary Search Tree C++ Python Note Easy
491 IPO C++ Python Note Hard
492 Next Greater Element II C++ Python Note Medium
493 Base 7 C++ Python Note Easy
494 The Maze II C++ Python Note None
495 Relative Ranks C++ Python Note Easy
496 Perfect Number C++ Python Note Easy
497 Most Frequent Subtree Sum C++ Python Note Medium
498 Find Bottom Left Tree Value C++ Python Note Medium
499 Freedom Trail C++ Python Note Hard
500 Find Largest Value in Each Tree Row C++ Python Note Medium
501 Longest Palindromic Subsequence C++ Python Note Medium
502 Super Washing Machines C++ Python Note Hard
503 Coin Change 2 C++ Python Note Medium
504 Detect Capital C++ Python Note Easy
505 Longest Uncommon Subsequence I C++ Python Note Easy
506 Longest Uncommon Subsequence II C++ Python Note Medium
507 Continuous Subarray Sum C++ Python Note Medium
508 Longest Word in Dictionary through Deleting C++ Python Note Medium
509 Contiguous Array C++ Python Note Medium
510 Beautiful Arrangement C++ Python Note Medium
511 Word Abbreviation C++ Python Note None
512 Minesweeper C++ Python Note Medium
513 Minimum Absolute Difference in BST C++ Python Note Easy
514 Lonely Pixel I C++ Python Note None
515 K-diff Pairs in an Array C++ Python Note Easy
516 Lonely Pixel II C++ Python Note None
517 Design TinyURL C++ Python Note Medium
518 Encode and Decode TinyURL C++ Python Note Medium
519 Construct Binary Tree from String C++ Python Note< 10000 /a> None
520 Complex Number Multiplication C++ Python Note Medium
521 Convert BST to Greater Tree C++ Python Note Easy
522 Minimum Time Difference C++ Python Note Medium
523 Single Element in a Sorted Array C++ Python Note Medium
524 Reverse String II C++ Python Note Easy
525 01 Matrix C++ Python Note Medium
526 Diameter of Binary Tree C++ Python Note Easy
527 Output Contest Matches C++ Python Note None
528 Boundary of Binary Tree C++ Python Note None
529 Remove Boxes C++ Python Note Hard
530 Friend Circles C++ Python Note Medium
531 Split Array with Equal Sum C++ Python Note None
532 Binary Tree Longest Consecutive Sequence II C++ Python Note None
533 Student Attendance Record I C++ Python Note Easy
534 Student Attendance Record II C++ Python Note Hard
535 Optimal Division C++ Python Note Medium
536 Brick Wall C++ Python Note Medium
537 Split Concatenated Strings C++ Python Note None
538 Next Greater Element III C++ Python Note Medium
539 Reverse Words in a String III C++ Python Note Easy
540 Subarray Sum Equals K C++ Python Note Medium
541 Array Partition I C++ Python Note Easy
542 Longest Line of Consecutive One in Matrix C++ Python Note None
543 Binary Tree Tilt C++ Python Note Easy
544 Find the Closest Palindrome C++ Python Note Hard
545 Array Nesting C++ Python Note Medium
546 Reshape the Matrix C++ Python Note Easy
547 Permutation in String C++ Python Note Medium
548 Maximum Vacation Days C++ Python Note None
549 Median Employee Salary C++ Python Note None
550 Managers with at Least 5 Direct Reports C++ Python Note None
551 Find Median Given Frequency of Numbers C++ Python Note None
552 Subtree of Another Tree C++ Python Note Easy
553 Squirrel Simulation C++ Python Note None
554 Winning Candidate C++ Python Note None
555 Distribute Candies C++ Python Note Easy
556 Out of Boundary Paths C++ Python Note Medium
557 Employee Bonus C++ Python Note None
558 Get Highest Answer Rate Question C++ Python Note None
559 Find Cumulative Salary of an Employee C++ Python Note None
560 Count Student Number in Departments C++ Python Note None
561 Shortest Unsorted Continuous Subarray C++ Python Note Easy
562 Kill Process C++ Python Note None
563 Delete Operation for Two Strings C++ Python Note Medium
564 Find Customer Referee C++ Python Note None
565 Investments in 2016 C++ Python Note None
566 Customer Placing the Largest Number of Orders C++ Python Note None
567 Erect the Fence C++ Python Note Hard
568 Design In-Memory File System C++ Python Note None
569 Tag Validator C++ Python Note Hard
570 Fraction Addition and Subtraction C++ Python Note Medium
571 Valid Square C++ Python Note Medium
572 Longest Harmonious Subsequence C++ Python Note Easy
573 Big Countries C++ Python Note Easy
574 Classes More Than 5 Students C++ Python Note Easy
575 Friend Requests I: Overall Acceptance Rate C++ Python Note None
576 Range Addition II C++ Python Note Easy
577 Minimum Index Sum of Two Lists C++ Python Note Easy
578 Non-negative Integers without Consecutive Ones C++ Python Note Hard
579 Human Traffic of Stadium C++ Python Note Hard
580 Friend Requests II: Who Has the Most Friends C++ Python Note None
581 Consecutive Available Seats C++ Python Note None
582 Design Compressed String Iterator C++ Python Note None
583 Can Place Flowers C++ Python Note Easy
584 Construct String from Binary Tree C++ Python Note Easy
585 Sales Person C++ Python Note None
586 Tree Node C++ Python Note None
587 Find Duplicate File in System C++ Python Note Medium
588 Triangle Judgement C++ Python Note None
589 Valid Triangle Number C++ Python Note Medium
590 Shortest Distance in a Plane C++ Python Note None
591 Shortest Distance in a Line C++ Python Note None
592 Second Degree Follower C++ Python Note None
593 Average Salary: Departments VS Company C++ Python Note None
594 Add Bold Tag in String C++ Python Note None
595 Merge Two Binary Trees C++ Python Note Easy
596 Students Report By Geography C++ Python Note None
597 Biggest Single Number C++ Python Note None
598 Not Boring Movies C++ Python Note Easy
599 Task Scheduler C++ Python Note Medium
600 Add One Row to Tree C++ Python Note Medium
601 Maximum Distance in Arrays C++ Python Note None
602 Minimum Factorization C++ Python Note None
603 Exchange Seats C++ Python Note Medium
604 Swap Salary C++ Python Note Easy
605 Maximum Product of Three Numbers C++ Python Note Easy
606 K Inverse Pairs Array C++ Python Note Hard
607 Course Schedule III C++ Python Note Hard
608 Design Excel Sum Formula C++ Python Note None
609 Smallest Range C++ Python Note Hard
610 Sum of Square Numbers C++ Python Note Easy
611 Find the Derangement of An Array C++ Python Note None
612 Design Log Storage System C++ Python Note None
613 Exclusive Time of Functions C++ Python Note Medium
614 Average of Levels in Binary Tree C++ Python Note Easy
615 Shopping Offers C++ Python Note Medium
616 Decode Ways II C++ Python Note Hard
617 Solve the Equation C++ Python Note Medium
618 Design Search Autocomplete System C++ Python Note None
619 Maximum Average Subarray I C++ Python Note Easy
620 Maximum Average Subarray II C++ Python Note None
621 Set Mismatch C++ Python Note Easy
622 Maximum Length of Pair Chain C++ Python Note Medium
623 Palindromic Substrings C++ Python Note Medium
624 Replace Words C++ Python Note Medium
625 Dota2 Senate C++ Python Note Medium
626 2 Keys Keyboard C++ Python Note Medium
627 4 Keys Keyboard C++ Python Note None
628 Find Duplicate Subtrees C++ Python Note Medium
629 Two Sum IV - Input is a BST C++ Python Note Easy
630 Maximum Binary Tree C++ Python Note Medium
631 Print Binary Tree C++ Python Note Medium
632 Coin Path C++ Python Note None
633 Judge Route Circle C++ Python Note Easy
634 Find K Closest Elements C++ Python Note Medium
635 Split Array into Consecutive Subsequences C++ Python Note Medium
636 Remove 9 C++ Python Note None
637 Image Smoother C++ Python Note Easy
638 Maximum Width of Binary Tree C++ Python Note Medium
639 Equal Tree Partition C++ Python Note None
640 Strange Printer C++ Python Note Hard
641 Non-decreasing Array C++ Python Note Easy
642 Path Sum IV C++ Python Note None
643 Beautiful Arrangement II C++ Python Note Medium
644 Kth Smallest Number in Multiplication Table C++ Python Note Hard
645 Trim a Binary Search Tree C++ Python Note Easy
646 Maximum Swap C++ Python Note Medium
647 Second Minimum Node In a Binary Tree C++ Python Note Easy
648 Bulb Switcher II C++ Python Note Medium
649 Number of Longest Increasing Subsequence C++ Python Note Medium
650 Longest Continuous Increasing Subsequence C++ Python Note Easy
651 Cut Off Trees for Golf Event C++ Python Note Hard
652 Implement Magic Dictionary C++ Python Note Medium
653 Map Sum Pairs C++ Python Note Medium
654 Valid Parenthesis String C++ Python Note Medium
655 24 Game C++ Python Note Hard
656 Valid Palindrome II C++ Python Note Easy
657 Next Closest Time C++ Python Note None
658 Baseball Game C++ Python Note Easy
659 K Empty Slots C++ Python Note None
660 Redundant Connection C++ Python Note Medium
661 Redundant Connection II C++ Python Note Hard
662 Repeated String Match C++ Python Note Easy
663 Longest Univalue Path C++ Python Note Easy
664 Knight Probability in Chessboard C++ Python Note Medium
665 Maximum Sum of 3 Non-Overlapping Subarrays C++ Python Note Hard
666 Employee Importance C++ Python Note Easy
667 Stickers to Spell Word C++ Python Note Hard
668 Top K Frequent Words C++ Python Note Medium
669 Binary Number with Alternating Bits C++ Python Note Easy
670 Number of Distinct Islands C++ Python Note None
671 Max Area of Island C++ Python Note Easy
672 Count Binary Substrings C++ Python Note Easy
673 Degree of an Array C++ Python Note Easy
674 Partition to K Equal Sum Subsets C++ Python Note Medium
675 Falling Squares C++ Python Note Hard
676 Number of Distinct Islands II C++ Python Note None
677 Minimum ASCII Delete Sum for Two Strings C++ Python Note Medium
678 Subarray Product Less Than K C++ Python Note Medium
679 Best Time to Buy and Sell Stock with Transaction Fee C++ Python Note Medium
680 Range Module C++ Python Note Hard
681 Max Stack C++ Python Note None
682 1-bit and 2-bit Characters C++ Python Note Easy
683 Maximum Length of Repeated Subarray C++ Python Note Medium
684 Find K-th Smallest Pair Distance C++ Python Note Hard
685 Longest Word in Dictionary C++ Python Note Easy
686 Accounts Merge C++ Python Note Medium
687 Remove Comments C++ Python Note Medium
688 Candy Crush C++ Python Note None
689 Find Pivot Index C++ Python Note Easy
690 Split Linked List in Parts C++ Python Note Medium
691 Number of Atoms C++ Python Note Hard
692 Minimum Window Subsequence C++ Python Note None
693 Self Dividing Numbers C++ Python Note Easy
694 My Calendar I C++ Python Note Medium
695 Count Different Palindromic Subsequences C++ Python Note Hard
696 My Calendar II C++ Python Note Medium
697 My Calendar III C++ Python Note Hard
698 Flood Fill C++ Python Note Easy
699 Sentence Similarity C++ Python Note Easy
700 Asteroid Collision C++ Python Note Medium
701 Parse Lisp Expression C++ Python Note Hard
702 Sentence Similarity II C++ Python Note Medium
703 Monotone Increasing Digits C++ Python Note Medium
704 Daily Temperatures C++ Python Note Medium
705 Delete and Earn C++ Python Note Medium
706 Cherry Pickup C++ Python Note Hard
707 Closest Leaf in a Binary Tree C++ Python Note New
708 Network Delay Time C++ Python Note New
709 Find Smallest Letter Greater Than Target C++ Python Note New
710 Prefix and Suffix Search C++ Python Note New

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✏️ LeetCode solutions in C++ 11 and Python3

github.com/pezy/LeetCode#leetcode

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