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README.md
 
 
Leetcode Python solutions About Prerequisites List of Problems Built With Contributing Author License Acknowledgments

README.md

Leetcode Python solutions

About

This repository includes my solutions to all Leetcode algorithm questions. This problems mostly consist of real interview questions that are asked on big companies like Facebook, Amazon, Netflix, Google etc. If you find my solutions hard to comprehend, give yourself a time to solve easier questions or check discussion section to problem on LeetCode. Feel free to contact me for improvements 😃

Prerequisites

Some problems may need premium subscription on LeetCode to unlock it!

import premium

List of Problems

# Problem Solution
1 Two Sum python3
2 Add Two Numbers python3
3 Longest Substring Without Repeating Characters python3
4 Median of Two Sorted Arrays python3
5 Longest Palindromic Substring python3
6 ZigZag Conversion python3
7 Reverse Integer python3
8 String to Integer (atoi) python3
9 Palindrome Number python3
10 Regular Expression Matching python3
11 Container With Most Water python3
12 Integer to Roman python3
13 Roman to Integer python3
14 Longest Common Prefix python3
15 3Sum python3
16 3Sum Closest python3
17 Letter Combinations of a Phone Number python3
18 4Sum python3
19 Remove Nth Node From End of List python3
20 Valid Parentheses python3
21 Merge Two Sorted Lists python3
22 Generate Parentheses python3
23 Merge k Sorted Lists python3
24 Swap Nodes in Pairs python3
25 Reverse Nodes in k-Group python3
26 Remove Duplicates from Sorted Array python3
27 Remove Element python3
28 Implement strStr() python3
29 Divide Two Integers python3
30 Substring with Concatenation of All Words python3
31 Next Permutation python3
32 Longest Valid Parentheses python3
33 Search in Rotated Sorted Array python3
34 Find First and Last Position of Element in Sorted Array python3
35 Search Insert Position python3
36 Valid Sudoku python3
37 Sudoku Solver python3
38 Count and Say python3
39 Combination Sum python3
40 Combination Sum II python3
41 First Missing Positive python3
42 Trapping Rain Water python3
43 Multiply Strings python3
44 Wildcard Matching python3
45 Jump Game II python3
46 Permutations python3
47 Permutations II python3
48 Rotate Image python3
49 Group Anagrams python3
50 Pow(x, n) python3
51 N-Queens python3
52 N-Queens II python3
53 Maximum Subarray python3
54 Spiral Matrix python3
55 Jump Game python3
56 Merge Intervals python3
57 Insert Interval python3
58 Length of Last Word python3
59 Spiral Matrix II python3
60 Permutation Sequence python3
61 Rotate List python3
62 Unique Paths python3
63 Unique Paths II python3
64 Minimum Path Sum python3
65 Valid Number python3
66 Plus One python3
67 Add Binary python3
68 Text Justification python3
69 Sqrt(x) python3
70 Climbing Stairs python3
71 Simplify Path python3
72 Edit Distance python3
73 Set Matrix Zeroes python3
74 Search a 2D Matrix python3
75 Sort Colors python3
76 Minimum Window Substring python3
77 Combinations python3
78 Subsets python3
79 Word Search python3
80 Remove Duplicates from Sorted Array II python3
81 Search in Rotated Sorted Array II python3
82 Remove Duplicates from Sorted List II python3
83 Remove Duplicates from Sorted List python3
84 Largest Rectangle in Histogram python3
85 Maximal Rectangle python3
86 Partition List python3
87 Scramble String python3
88 Merge Sorted Array python3
89 Gray Code python3
90 Subsets II python3
91 Decode Ways python3
92 Reverse Linked List II python3
93 Restore IP Addresses python3
94 Binary Tree Inorder Traversal python3
95 Unique Binary Search Trees II python3
96 Unique Binary Search Trees python3
97 Interleaving String python3
98 Validate Binary Search Tree python3
99 Recover Binary Search Tree python3
100 Same Tree python3
101 Symmetric Tree python3
102 Binary Tree Level Order Traversal python3
103 Binary Tree Zigzag Level Order Traversal python3
104 Maximum Depth of Binary Tree python3
105 Construct Binary Tree from Preorder and Inorder Traversal python3
106 Construct Binary Tree from Inorder and Postorder Traversal python3
107 Binary Tree Level Order Traversal II python3
108 Convert Sorted Array to Binary Search Tree python3
109 Convert Sorted List to Binary Search Tree python3
110 Balanced Binary Tree python3
111 Minimum Depth of Binary Tree python3
112 Path Sum python3
113 Path Sum II python3
114 Flatten Binary Tree to Linked List python3
115 Distinct Subsequences python3
116 Populating Next Right Pointers in Each Node python3
117 Populating Next Right Pointers in Each Node II python3
118 Pascal's Triangle python3
119 Pascal's Triangle II python3
120 Triangle python3
121 Best Time to Buy and Sell Stock python3
122 Best Time to Buy and Sell Stock II python3
123 Best Time to Buy and Sell Stock III python3
124 Binary Tree Maximum Path Sum python3
125 Valid Palindrome python3
126 Word Ladder II python3
127 Word Ladder python3
128 Longest Consecutive Sequence python3
129 Sum Root to Leaf Numbers python3
130 Surrounded Regions python3
131 Palindrome Partitioning python3
132 Palindrome Partitioning II python3
133 Clone Graph python3
134 Gas Station python3
135 Candy python3
136 Single Number python3
137 Single Number II python3
138 Copy List with Random Pointer python3
139 Word Break python3
140 Word Break II python3
141 Linked List Cycle python3
142 Linked List Cycle II python3
143 Reorder List python3
144 Binary Tree Preorder Traversal python3
145 Binary Tree Postorder Traversal python3
146 LRU Cache python3
147 Insertion Sort List python3
148 Sort List python3
149 Max Points on a Line python3
150 Evaluate Reverse Polish Notation python3
151 Reverse Words in a String python3
152 Maximum Product Subarray python3
153 Find Minimum in Rotated Sorted Array python3
154 Find Minimum in Rotated Sorted Array II python3
155 Min Stack python3
156 Binary Tree Upside Down python3
157 Read N Characters Given Read4 python3
158 Read N Characters Given Read4 II - Call multiple times python3
159 Longest Substring with At Most Two Distinct Characters python3
160 Intersection of Two Linked Lists python
161 One Edit Distance python3
162 Find Peak Element python3
163 Missing Ranges python3
164 Maximum Gap python3
165 Compare Version Numbers python3
166 Fraction to Recurring Decimal python3
167 Two Sum II - Input array is sorted python3
168 Excel Sheet Column Title python3
169 Majority Element python3
170 Two Sum III - Data structure design python3
171 Excel Sheet Column Number python3
172 Factorial Trailing Zeroes python3
173 Binary Search Tree Iterator python3
174 Dungeon Game python3
179 Largest Number python3
186 Reverse Words in a String II python3
187 Repeated DNA Sequences python3
188 Best Time to Buy and Sell Stock IV python3
189 Rotate Array python3
190 Reverse Bits python
198 House Robber python3
199 Binary Tree Right Side View python3
200 Number of Islands python3
201 Bitwise AND of Numbers Range python3
202 Happy Number python3
203 Remove Linked List Elements python3
204 Count Primes python3
205 Isomorphic Strings python3
206 Reverse Linked List python3
207 Course Schedule python3
208 Implement Trie (Prefix Tree) python3
209 Minimum Size Subarray Sum python3
210 Course Schedule II python3
211 Add and Search Word - Data structure design python3
212 Word Search II python3
213 House Robber II python3
214 Shortest Palindrome python3
215 Kth Largest Element in an Array python3
216 Combination Sum III python3
217 Contains Duplicate python3
218 The Skyline Problem python3
219 Contains Duplicate II python3
220 Contains Duplicate III python3
221 Maximal Square python3
222 Count Complete Tree Nodes python3
223 Rectangle Area python3
224 Basic Calculator python3
225 Implement Stack using Queues python3
226 Invert Binary Tree python3
227 Basic Calculator II python3
228 Summary Ranges python3
229 Majority Element II python3
230 Kth Smallest Element in a BST python3
231 Power of Two python3
232 Implement Queue using Stacks python3
233 Number of Digit One python3
234 Palindrome Linked List python3
235 Lowest Common Ancestor of a Binary Search Tree python3
236 Lowest Common Ancestor of a Binary Tree python3
237 Delete Node in a Linked List python3
238 Product of Array Except Self python3
239 Sliding Window Maximum python3
240 Search a 2D Matrix II python3
241 Different Ways to Add Parentheses python3
242 Valid Anagram python3
243 Shortest Word Distance python3
244 Shortest Word Distance II python3
245 Shortest Word Distance III python3
246 Strobogrammatic Number python3
247 Strobogrammatic Number II python3
248 Strobogrammatic Number III python3
249 Group Shifted Strings python3
250 Count Univalue Subtrees python3
251 Flatten 2D Vector python3
252 Meeting Rooms python3
253 Meeting Rooms II python3
254 Factor Combinations python3
255 Verify Preorder Sequence in Binary Search Tree python3
256 Paint House python3
257 Binary Tree Paths python3
258 Add Digits python3
259 3Sum Smaller python3
260 Single Number III python3
261 Graph Valid Tree python3
263 Ugly Number python3
264 Ugly Number II python3
265 Paint House II python3
266 Palindrome Permutation python3
267 Palindrome Permutation II python3
268 Missing Number python3
269 Alien Dictionary python3
270 Closest Binary Search Tree Value python3
271 Encode and Decode Strings python
272 Closest Binary Search Tree Value II python3
273 Integer to English Words python3
274 H-Index python3
275 H-Index II python3
276 Paint Fence python3
277 Find the Celebrity python
278 First Bad Version python3
279 Perfect Squares python3
280 Wiggle Sort python3
281 Zigzag Iterator python
282 Expression Add Operators python3
283 Move Zeroes python3
284 Peeking Iterator python3
285 Inorder Successor in BST python3
286 Walls and Gates python3
287 Find the Duplicate Number python3
288 Unique Word Abbreviation python3
289 Game of Life python3
290 Word Pattern python3
291 Word Pattern II python3
292 Nim Game python3
293 Flip Game python3
294 Flip Game II python3
295 Find Median from Data Stream python3
296 Best Meeting Point python3
297 Serialize and Deserialize Binary Tree python3
298 Binary Tree Longest Consecutive Sequence python3
299 Bulls and Cows python3
300 Longest Increasing Subsequence python3
301 Remove Invalid Parentheses python3
302 Smallest Rectangle Enclosing Black Pixels python3
303 Range Sum Query - Immutable python3
304 Range Sum Query 2D - Immutable python3
305 Number of Islands II python3
306 Additive Number python3
307 Range Sum Query - Mutable python3
308 Range Sum Query 2D - Mutable python3
309 Best Time to Buy and Sell Stock with Cooldown python3
310 Minimum Height Trees python3
311 Sparse Matrix Multiplication python3
312 Burst Balloons python3
313 Super Ugly Number python3
314 Binary Tree Vertical Order Traversal python3
315 Count of Smaller Numbers After Self python3
316 Remove Duplicate Letters python3
317 Shortest Distance from All Buildings python3
318 Maximum Product of Word Lengths python3
319 Bulb Switcher python3
320 Generalized Abbreviation python3
321 Create Maximum Number python3
322 Coin Change python3
323 Number of Connected Components in an Undirected Graph python3
324 Wiggle Sort II python3
325 Maximum Size Subarray Sum Equals k python3
326 Power of Three python3
327 Count of Range Sum python3
328 Odd Even Linked List python3
329 Longest Increasing Path in a Matrix python3
330 Patching Array python3
331 Verify Preorder Serialization of a Binary Tree python3
332 Reconstruct Itinerary python3
333 Largest BST Subtree python3
334 Increasing Triplet Subsequence python3
335 Self Crossing python3
336 Palindrome Pairs python3
337 House Robber III python3
338 Counting Bits python3
339 Nested List Weight Sum python3
340 Longest Substring with At Most K Distinct Characters python3
342 Power of Four python3
343 Integer Break python3
344 Reverse String python3
345 Reverse Vowels of a String python3
346 Moving Average from Data Stream python3
347 Top K Frequent Elements python3
348 Design Tic-Tac-Toe python3
349 Intersection of Two Arrays python3
350 Intersection of Two Arrays II python3
351 Android Unlock Patterns python3
352 Data Stream as Disjoint Intervals python3
353 Design Snake Game python3
354 Russian Doll Envelopes python3
355 Design Twitter python3
356 Line Reflection python3
357 Count Numbers with Unique Digits python3
358 Rearrange String k Distance Apart python3
359 Logger Rate Limiter python3
360 Sort Transformed Array python3
361 Bomb Enemy python3
362 Design Hit Counter python3
363 Max Sum of Rectangle No Larger Than K python3
364 Nested List Weight Sum II python3
365 Water and Jug Problem python3
366 Find Leaves of Binary Tree python3
367 Valid Perfect Square python3
368 Largest Divisible Subset python3
369 Plus One Linked List python3
370 Range Addition python3
371 Sum of Two Integers python3
372 Super Pow python3
373 Find K Pairs with Smallest Sums python3
374 Guess Number Higher or Lower python
375 Guess Number Higher or Lower II python3
376 Wiggle Subsequence python3
377 Combination Sum IV python3
378 Kth Smallest Element in a Sorted Matrix python3
379 Design Phone Directory python3
380 Insert Delete GetRandom O(1) python3
381 Insert Delete GetRandom O(1) - Duplicates allowed python3
382 Linked List Random Node python3
383 Ransom Note python3
384 Shuffle an Array python3
385 Mini Parser python3
386 Lexicographical Numbers python3
387 First Unique Character in a String python3
388 Longest Absolute File Path python3
389 Find the Difference python3
390 Elimination Game python3
391 Perfect Rectangle python3
392 Is Subsequence python3
393 UTF-8 Validation python3
394 Decode String python3
395 Longest Substring with At Least K Repeating Characters python3
396 Rotate Function python3
397 Integer Replacement python3
398 Random Pick Index python3
399 Evaluate Division python3
400 Nth Digit python
401 Binary Watch python3
402 Remove K Digits python3
403 Frog Jump python3
404 Sum of Left Leaves python3
405 Convert a Number to Hexadecimal python3
406 Queue Reconstruction by Height python3
407 Trapping Rain Water II python3
408 Valid Word Abbreviation python3
409 Longest Palindrome python3
410 Split Array Largest Sum python3
411 Minimum Unique Word Abbreviation python3
412 Fizz Buzz python3
413 Arithmetic Slices python3
414 Third Maximum Number python3
415 Add Strings python3
416 Partition Equal Subset Sum python3
417 Pacific Atlantic Water Flow python3
418 Sentence Screen Fitting python3
419 Battleships in a Board python3
420 Strong Password Checker python3
421 Maximum XOR of Two Numbers in an Array python3
422 Valid Word Square python3
423 Reconstruct Original Digits from English python
424 Longest Repeating Character Replacement python3
425 Word Squares python3
426 Convert Binary Search Tree to Sorted Doubly Linked List python3
427 Construct Quad Tree python3
428 Serialize and Deserialize N-ary Tree python
429 N-ary Tree Level Order Traversal python
430 Flatten a Multilevel Doubly Linked List python
431 Encode N-ary Tree to Binary Tree python
432 All O`one Data Structure python3
433 Minimum Genetic Mutation python3
434 Number of Segments in a String python3
435 Non-overlapping Intervals python3
436 Find Right Interval python3
437 Path Sum III python3
438 Find All Anagrams in a String python3
439 Ternary Expression Parser python3
440 K-th Smallest in Lexicographical Order python
441 Arranging Coins python3
442 Find All Duplicates in an Array python3
443 String Compression python3
444 Sequence Reconstruction python3
445 Add Two Numbers II python3
446 Arithmetic Slices II - Subsequence python3
447 Number of Boomerangs python
448 Find All Numbers Disappeared in an Array python3
449 Serialize and Deserialize BST python
450 Delete Node in a BST python3
451 Sort Characters By Frequency python3
452 Minimum Number of Arrows to Burst Balloons python3
453 Minimum Moves to Equal Array Elements python3
454 4Sum II python3
455 Assign Cookies python3
456 132 Pattern python3
457 Circular Array Loop python
458 Poor Pigs python
459 Repeated Substring Pattern python3
460 LFU Cache python3
461 Hamming Distance python3
462 Minimum Moves to Equal Array Elements II python3
463 Island Perimeter python3
464 Can I Win python3
465 Optimal Account Balancing python3
466 Count The Repetitions python3
467 Unique Substrings in Wraparound String python3
468 Validate IP Address python3
469 Convex Polygon python3
470 Implement Rand10() Using Rand7() python3
471 Encode String with Shortest Length python3
472 Concatenated Words python3
473 Matchsticks to Square python3
474 Ones and Zeroes python3
475 Heaters python3
476 Number Complement python3
477 Total Hamming Distance python3
478 Generate Random Point in a Circle python3
479 Largest Palindrome Product python3
480 Sliding Window Median python3
481 Magical String python3
482 License Key Formatting python3
483 Smallest Good Base python3
484 Find Permutation python3
485 Max Consecutive Ones python3
486 Predict the Winner python3
487 Max Consecutive Ones II python3
488 Zuma Game python3
489 Robot Room Cleaner python3
490 The Maze python3
491 Increasing Subsequences python3
492 Construct the Rectangle python3
493 Reverse Pairs python3
494 Target Sum python3
495 Teemo Attacking python3
496 Next Greater Element I python3
497 Random Point in Non-overlapping Rectangles python3
498 Diagonal Traverse python3
499 The Maze III python3
500 Keyboard Row python3
501 Find Mode in Binary Search Tree python3
502 IPO python3
503 Next Greater Element II python3
504 Base 7 python3
505 The Maze II python3
506 Relative Ranks python3
507 Perfect Number python3
508 Most Frequent Subtree Sum python3
509 Fibonacci Number python3
510 Inorder Successor in BST II python3
513 Find Bottom Left Tree Value python3
514 Freedom Trail python3
515 Find Largest Value in Each Tree Row python3
516 Longest Palindromic Subsequence python3
517 Super Washing Machines python3
518 Coin Change 2 python
519 Random Flip Matrix python3
520 Detect Capital python3
521 Longest Uncommon Subsequence I python3
522 Longest Uncommon Subsequence II python3
523 Continuous Subarray Sum python3
524 Longest Word in Dictionary through Deleting python3
525 Contiguous Array python3
526 Beautiful Arrangement python3
527 Word Abbreviation python3
528 Random Pick with Weight python3
529 Minesweeper python3
530 Minimum Absolute Difference in BST python3
531 Lonely Pixel I python3
532 K-diff Pairs in an Array python3
533 Lonely Pixel II python3
535 Encode and Decode TinyURL python
536 Construct Binary Tree from String python3
537 Complex Number Multiplication python3
538 Convert BST to Greater Tree python3
539 Minimum Time Difference python3
540 Single Element in a Sorted Array python3
541 Reverse String II python3
542 01 Matrix python3
543 Diameter of Binary Tree python3
544 Output Contest Matches python3
545 Boundary of Binary Tree python3
546 Remove Boxes python3
547 Friend Circles python3
548 Split Array with Equal Sum python
549 Binary Tree Longest Consecutive Sequence II python3
551 Student Attendance Record I python3
552 Student Attendance Record II python
553 Optimal Division python3
554 Brick Wall python3
555 Split Concatenated Strings python3
556 Next Greater Element III python3
557 Reverse Words in a String III python3
558 Quad Tree Intersection python3
559 Maximum Depth of N-ary Tree python
560 Subarray Sum Equals K python3
561 Array Partition I python3
562 Longest Line of Consecutive One in Matrix python3
563 Binary Tree Tilt python3
564 Find the Closest Palindrome python3
565 Array Nesting python3
566 Reshape the Matrix python3
567 Permutation in String python3
568 Maximum Vacation Days python3
572 Subtree of Another Tree python3
573 Squirrel Simulation python3
575 Distribute Candies python3
576 Out of Boundary Paths python3
581 Shortest Unsorted Continuous Subarray python3
582 Kill Process python3
583 Delete Operation for Two Strings python3
587 Erect the Fence python3
588 Design In-Memory File System python3
589 N-ary Tree Preorder Traversal python
590 N-ary Tree Postorder Traversal python
591 Tag Validator python3
592 Fraction Addition and Subtraction python3
593 Valid Square python3
594 Longest Harmonious Subsequence python
598 Range Addition II python3
599 Minimum Index Sum of Two Lists python3
600 Non-negative Integers without Consecutive Ones python3
604 Design Compressed String Iterator python3
605 Can Place Flowers python3
606 Construct String from Binary Tree python3
609 Find Duplicate File in System python3
611 Valid Triangle Number python3
616 Add Bold Tag in String python3
617 Merge Two Binary Trees python3
621 Task Scheduler python3
622 Design Circular Queue python3
623 Add One Row to Tree python3
624 Maximum Distance in Arrays python3
625 Minimum Factorization python3
628 Maximum Product of Three Numbers python3
629 K Inverse Pairs Array python3
630 Course Schedule III python3
631 Design Excel Sum Formula python3
632 Smallest Range Covering Elements from K Lists python3
633 Sum of Square Numbers python3
634 Find the Derangement of An Array python
635 Design Log Storage System python3
636 Exclusive Time of Functions python3
637 Average of Levels in Binary Tree python3
638 Shopping Offers python3
639 Decode Ways II python3
640 Solve the Equation python3
641 Design Circular Deque python3
642 Design Search Autocomplete System python3
643 Maximum Average Subarray I python3
644 Maximum Average Subarray II python3
645 Set Mismatch python3
646 Maximum Length of Pair Chain python3
647 Palindromic Substrings python3
648 Replace Words python3
649 Dota2 Senate python3
650 2 Keys Keyboard python3
651 4 Keys Keyboard python3
652 Find Duplicate Subtrees python3
653 Two Sum IV - Input is a BST python3
654 Maximum Binary Tree python3
655 Print Binary Tree python3
656 Coin Path python3
657 Robot Return to Origin python3
658 Find K Closest Elements python3
659 Split Array into Consecutive Subsequences python3
660 Remove 9 python3
661 Image Smoother python3
662 Maximum Width of Binary Tree python3
663 Equal Tree Partition python3
664 Strange Printer python3
665 Non-decreasing Array python3
666 Path Sum IV python3
667 Beautiful Arrangement II python3
668 Kth Smallest Number in Multiplication Table python3
669 Trim a Binary Search Tree python3
670 Maximum Swap python3
671 Second Minimum Node In a Binary Tree python3
672 Bulb Switcher II python3
673 Number of Longest Increasing Subsequence python3
674 Longest Continuous Increasing Subsequence python3
675 Cut Off Trees for Golf Event python3
676 Implement Magic Dictionary python3
677 Map Sum Pairs python3
678 Valid Parenthesis String python3
679 24 Game python3
680 Valid Palindrome II python3
681 Next Closest Time python3
682 Baseball Game python3
683 K Empty Slots python
684 Redundant Connection python3
685 Redundant Connection II python3
686 Repeated String Match python3
687 Longest Univalue Path python
688 Knight Probability in Chessboard python3
689 Maximum Sum of 3 Non-Overlapping Subarrays python3
690 Employee Importance python3
691 Stickers to Spell Word python3
692 Top K Frequent Words python3
693 Binary Number with Alternating Bits python3
694 Number of Distinct Islands python3
695 Max Area of Island python3
696 Count Binary Substrings python3
697 Degree of an Array python3
698 Partition to K Equal Sum Subsets python3
699 Falling Squares python3
700 Search in a Binary Search Tree python3
701 Insert into a Binary Search Tree python3
702 Search in a Sorted Array of Unknown Size python3
703 Kth Largest Element in a Stream python3
704 Binary Search python3
705 Design HashSet python3
706 Design HashMap python3
707 Design Linked List python3
708 Insert into a Cyclic Sorted List python
709 To Lower Case python3
710 Random Pick with Blacklist python3
711 Number of Distinct Islands II python3
712 Minimum ASCII Delete Sum for Two Strings python3
713 Subarray Product Less Than K python3
714 Best Time to Buy and Sell Stock with Transaction Fee python3
715 Range Module python3
716 Max Stack python3
717 1-bit and 2-bit Characters python3
718 Maximum Length of Repeated Subarray python3
719 Find K-th Smallest Pair Distance python3
720 Longest Word in Dictionary python3
721 Accounts Merge python3
722 Remove Comments python3
723 Candy Crush python3
724 Find Pivot Index python3
725 Split Linked List in Parts python3
726 Number of Atoms python3
727 Minimum Window Subsequence python3
728 Self Dividing Numbers python3
729 My Calendar I python3
730 Count Different Palindromic Subsequences python3
731 My Calendar II python3
732 My Calendar III python3
733 Flood Fill python3
734 Sentence Similarity python3
735 Asteroid Collision python3
736 Parse Lisp Expression python3
737 Sentence Similarity II python3
738 Monotone Increasing Digits python3
739 Daily Temperatures python3
740 Delete and Earn python3
741 Cherry Pickup python3
742 Closest Leaf in a Binary Tree python3
743 Network Delay Time python3
744 Find Smallest Letter Greater Than Target python3
745 Prefix and Suffix Search python3
746 Min Cost Climbing Stairs python3
747 Largest Number At Least Twice of Others python3
748 Shortest Completing Word python3
749 Contain Virus python3
750 Number Of Corner Rectangles python3
751 IP to CIDR python3
752 Open the Lock python3
753 Cracking the Safe python3
754 Reach a Number python3
755 Pour Water python3
756 Pyramid Transition Matrix python3
757 Set Intersection Size At Least Two python3
758 Bold Words in String python3
759 Employee Free Time python3
760 Find Anagram Mappings python3
761 Special Binary String python3
762 Prime Number of Set Bits in Binary Representation python3
763 Partition Labels python3
764 Largest Plus Sign python3
765 Couples Holding Hands python3
766 Toeplitz Matrix python3
767 Reorganize String python3
768 Max Chunks To Make Sorted II python3
769 Max Chunks To Make Sorted python3
770 Basic Calculator IV python3
771 Jewels and Stones python3
772 Basic Calculator III python3
773 Sliding Puzzle python3
774 Minimize Max Distance to Gas Station python3
775 Global and Local Inversions python3
776 Split BST python3
777 Swap Adjacent in LR String python3
778 Swim in Rising Water python3
779 K-th Symbol in Grammar python3
780 Reaching Points python3
781 Rabbits in Forest python3
782 Transform to Chessboard python3
783 Minimum Distance Between BST Nodes python3
784 Letter Case Permutation python3
785 Is Graph Bipartite? python3
786 K-th Smallest Prime Fraction python3
787 Cheapest Flights Within K Stops python3
788 Rotated Digits python3
789 Escape The Ghosts python3
790 Domino and Tromino Tiling python
791 Custom Sort String python3
792 Number of Matching Subsequences python3
793 Preimage Size of Factorial Zeroes Function python3
794 Valid Tic-Tac-Toe State python3
795 Number of Subarrays with Bounded Maximum python3
796 Rotate String python
797 All Paths From Source to Target python3
798 Smallest Rotation with Highest Score python3
799 Champagne Tower python3
800 Similar RGB Color python3
802 Find Eventual Safe States python3
803 Bricks Falling When Hit python3
804 Unique Morse Code Words python3
805 Split Array With Same Average python3
806 Number of Lines To Write String python3
807 Max Increase to Keep City Skyline python3
808 Soup Servings python3
809 Expressive Words python3
810 Chalkboard XOR Game python3
811 Subdomain Visit Count python3
812 Largest Triangle Area python3
813 Largest Sum of Averages python3
814 Binary Tree Pruning python3
815 Bus Routes python3
816 Ambiguous Coordinates python3
817 Linked List Components python3
818 Race Car python3
819 Most Common Word python3
820 Short Encoding of Words python3
821 Shortest Distance to a Character python3
822 Card Flipping Game python3
823 Binary Trees With Factors python3
824 Goat Latin python3
825 Friends Of Appropriate Ages python3
826 Most Profit Assigning Work python3
827 Making A Large Island python3
828 Unique Letter String python3
829 Consecutive Numbers Sum python3
830 Positions of Large Groups python3
831 Masking Personal Information python3
832 Flipping an Image python3
833 Find And Replace in String python3
834 Sum of Distances in Tree python3
835 Image Overlap python3
836 Rectangle Overlap python3
837 New 21 Game python3
838 Push Dominoes python3
839 Similar String Groups python3
840 Magic Squares In Grid python3
841 Keys and Rooms python3
842 Split Array into Fibonacci Sequence python3
843 Guess the Word python3
844 Backspace String Compare python3
845 Longest Mountain in Array python3
846 Hand of Straights python3
847 Shortest Path Visiting All Nodes python3
848 Shifting Letters python3
849 Maximize Distance to Closest Person python3
850 Rectangle Area II python3
851 Loud and Rich python3
852 Peak Index in a Mountain Array python3
853 Car Fleet python3
854 K-Similar Strings python3
855 Exam Room python3
856 Score of Parentheses python3
857 Minimum Cost to Hire K Workers python3
858 Mirror Reflection python3
859 Buddy Strings python3
860 Lemonade Change python3
861 Score After Flipping Matrix python3
862 Shortest Subarray with Sum at Least K python3
863 All Nodes Distance K in Binary Tree python3
864 Shortest Path to Get All Keys python3
865 Smallest Subtree with all the Deepest Nodes python3
866 Prime Palindrome python3
867 Transpose Matrix python3
868 Binary Gap python3
869 Reordered Power of 2 python3
870 Advantage Shuffle python3
871 Minimum Number of Refueling Stops python3
872 Leaf-Similar Trees python3
873 Length of Longest Fibonacci Subsequence python3
874 Walking Robot Simulation python3
875 Koko Eating Bananas python3
876 Middle of the Linked List python3
877 Stone Game python3
878 Nth Magical Number python3
879 Profitable Schemes python3
880 Decoded String at Index python3
881 Boats to Save People python3
882 Reachable Nodes In Subdivided Graph python3
883 Projection Area of 3D Shapes python3
884 Uncommon Words from Two Sentences python3
885 Spiral Matrix III python3
886 Possible Bipartition python3
887 Super Egg Drop python3
888 Fair Candy Swap python3
889 Construct Binary Tree from Preorder and Postorder Traversal python3
890 Find and Replace Pattern python3
891 Sum of Subsequence Widths python3
892 Surface Area of 3D Shapes python3
893 Groups of Special-Equivalent Strings python3
894 All Possible Full Binary Trees python3
895 Maximum Frequency Stack python3
896 Monotonic Array python3
897 Increasing Order Search Tree python3
898 Bitwise ORs of Subarrays python3
899 Orderly Queue python3
900 RLE Iterator python3
901 Online Stock Span python3
902 Numbers At Most N Given Digit Set python3
903 Valid Permutations for DI Sequence python3
904 Fruit Into Baskets python3
905 Sort Array By Parity python3
906 Super Palindromes python3
907 Sum of Subarray Minimums python3
908 Smallest Range I python3
909 Snakes and Ladders python3
910 Smallest Range II python3
911 Online Election python3
912 Sort an Array python3
913 Cat and Mouse python3
914 X of a Kind in a Deck of Cards python3
915 Partition Array into Disjoint Intervals python3
916 Word Subsets python3
917 Reverse Only Letters python3
918 Maximum Sum Circular Subarray python3
919 Complete Binary Tree Inserter python3
920 Number of Music Playlists python3
921 Minimum Add to Make Parentheses Valid python3
922 Sort Array By Parity II python3
923 3Sum With Multiplicity python3
924 Minimize Malware Spread python3
925 Long Pressed Name python3
926 Flip String to Monotone Increasing python3
927 Three Equal Parts python3
928 Minimize Malware Spread II python3
929 Unique Email Addresses python3
930 Binary Subarrays With Sum python3
931 Minimum Falling Path Sum python3
932 Beautiful Array python3
933 Number of Recent Calls python3
934 Shortest Bridge python3
935 Knight Dialer python3
936 Stamping The Sequence python3
937 Reorder Data in Log Files python3
938 Range Sum of BST python3
939 Minimum Area Rectangle python3
940 Distinct Subsequences II python3
941 Valid Mountain Array python3
942 DI String Match python3
943 Find the Shortest Superstring python3
944 Delete Columns to Make Sorted python3
945 Minimum Increment to Make Array Unique python3
946 Validate Stack Sequences python3
947 Most Stones Removed with Same Row or Column python3
948 Bag of Tokens python3
949 Largest Time for Given Digits python3
950 Reveal Cards In Increasing Order python3
951 Flip Equivalent Binary Trees python3
952 Largest Component Size by Common Factor python3
953 Verifying an Alien Dictionary python3
954 Array of Doubled Pairs python3
955 Delete Columns to Make Sorted II python3
956 Tallest Billboard python3
957 Prison Cells After N Days python3
958 Check Completeness of a Binary Tree python3
959 Regions Cut By Slashes python3
960 Delete Columns to Make Sorted III python3
961 N-Repeated Element in Size 2N Array python3
962 Maximum Width Ramp python3
963 Minimum Area Rectangle II python3
964 Least Operators to Express Number python3
965 Univalued Binary Tree python3
966 Vowel Spellchecker python3
967 Numbers With Same Consecutive Differences python3
968 Binary Tree Cameras python3
969 Pancake Sorting python3
970 Powerful Integers python3
971 Flip Binary Tree To Match Preorder Traversal python3
972 Equal Rational Numbers python3
973 K Closest Points to Origin python3
974 Subarray Sums Divisible by K python3
975 Odd Even Jump python3
976 Largest Perimeter Triangle python3
977 Squares of a Sorted Array python3
978 Longest Turbulent Subarray python3
979 Distribute Coins in Binary Tree python3
980 Unique Paths III python3
981 Time Based Key-Value Store python3
982 Triples with Bitwise AND Equal To Zero python3
983 Minimum Cost For Tickets python3
984 String Without AAA or BBB python3
985 Sum of Even Numbers After Queries python3
986 Interval List Intersections python3
987 Vertical Order Traversal of a Binary Tree python3
988 Smallest String Starting From Leaf python3
989 Add to Array-Form of Integer python3
990 Satisfiability of Equality Equations python3
991 Broken Calculator python3
992 Subarrays with K Different Integers python
993 Cousins in Binary Tree python3
994 Rotting Oranges python3
995 Minimum Number of K Consecutive Bit Flips python3
996 Number of Squareful Arrays python3
997 Find the Town Judge python3
998 Maximum Binary Tree II python3
999 Available Captures for Rook python3
1000 Minimum Cost to Merge Stones python3
1001 Grid Illumination python3
1002 Find Common Characters python3
1003 Check If Word Is Valid After Substitutions python3
1004 Max Consecutive Ones III python3
1005 Maximize Sum Of Array After K Negations python3
1006 Clumsy Factorial python3
1007 Minimum Domino Rotations For Equal Row python3
1008 Construct Binary Search Tree from Preorder Traversal python3
1009 Complement of Base 10 Integer python3
1010 Pairs of Songs With Total Durations Divisible by 60 python3
1011 Capacity To Ship Packages Within D Days python3
1012 Numbers With Repeated Digits python3
1013 Partition Array Into Three Parts With Equal Sum python3
1014 Best Sightseeing Pair python3
1015 Smallest Integer Divisible by K python3
1016 Binary String With Substrings Representing 1 To N python3
1017 Convert to Base -2 python3
1018 Binary Prefix Divisible By 5 python3
1019 Next Greater Node In Linked List python3
1020 Number of Enclaves python3
1021 Remove Outermost Parentheses python3
1022 Sum of Root To Leaf Binary Numbers python3
1023 Camelcase Matching python3
1024 Video Stitching python3
1025 Divisor Game python3
1026 Maximum Difference Between Node and Ancestor python3
1027 Longest Arithmetic Sequence python3
1028 Recover a Tree From Preorder Traversal python3
1029 Two City Scheduling python3
1030 Matrix Cells in Distance Order python3
1031 Maximum Sum of Two Non-Overlapping Subarrays python3
1032 Stream of Characters python3
1033 Moving Stones Until Consecutive python3
1034 Coloring A Border python3
1035 Uncrossed Lines python3
1036 Escape a Large Maze python3
1037 Valid Boomerang python3
1038 Binary Search Tree to Greater Sum Tree python3
1039 Minimum Score Triangulation of Polygon python3
1040 Moving Stones Until Consecutive II python3
1041 Robot Bounded In Circle python3
1042 Flower Planting With No Adjacent python3
1043 Partition Array for Maximum Sum python3
1044 Longest Duplicate Substring python3
1046 Last Stone Weight python3
1047 Remove All Adjacent Duplicates In String python3
1048 Longest String Chain python3
1049 Last Stone Weight II python3
1051 Height Checker python3
1052 Grumpy Bookstore Owner python3
1053 Previous Permutation With One Swap python3
1054 Distant Barcodes python3
1055 Shortest Way to Form String python3
1056 Confusing Number python3
1057 Campus Bikes python3
1058 Minimize Rounding Error to Meet Target python3
1059 All Paths from Source Lead to Destination python3
1060 Missing Element in Sorted Array python3
1061 Lexicographically Smallest Equivalent String python3
1062 Longest Repeating Substring python3
1063 Number of Valid Subarrays python3
1064 Fixed Point python3
1065 Index Pairs of a String python3
1066 Campus Bikes II python3
1071 Greatest Common Divisor of Strings python3
1072 Flip Columns For Maximum Number of Equal Rows python3
1074 Number of Submatrices That Sum to Target python3
1078 Occurrences After Bigram python3
1079 Letter Tile Possibilities python3
1080 Insufficient Nodes in Root to Leaf Paths python3
1081 Smallest Subsequence of Distinct Characters python3
1085 Sum of Digits in the Minimum Number python3
1086 High Five python3
1087 Brace Expansion python3
1088 Confusing Number II python3
1089 Duplicate Zeros python3
1090 Largest Values From Labels python3
1091 Shortest Path in Binary Matrix python3
1092 Shortest Common Supersequence python3
1093 Statistics from a Large Sample python3
1094 Car Pooling python3
1095 Find in Mountain Array python3
1096 Brace Expansion II python3
1099 Two Sum Less Than K python3
1100 Find K-Length Substrings With No Repeated Characters python3
1101 The Earliest Moment When Everyone Become Friends python3
1102 Path With Maximum Minimum Value python3
1103 Distribute Candies to People python3
1104 Path In Zigzag Labelled Binary Tree python3
1105 Filling Bookcase Shelves python3
1106 Parsing A Boolean Expression python3
1108 Defanging an IP Address python3
1109 Corporate Flight Bookings python3
1110 Delete Nodes And Return Forest python3
1111 Maximum Nesting Depth of Two Valid Parentheses Strings python3
1118 Number of Days in a Month python3
1119 Remove Vowels from a String python3
1120 Maximum Average Subtree python3
1121 Divide Array Into Increasing Sequences python3
1122 Relative Sort Array python3
1123 Lowest Common Ancestor of Deepest Leaves python3
1124 Longest Well-Performing Interval python3
1125 Smallest Sufficient Team python3
1128 Number of Equivalent Domino Pairs python3
1129 Shortest Path with Alternating Colors python3
1130 Minimum Cost Tree From Leaf Values python3
1131 Maximum of Absolute Value Expression python3
1133 Largest Unique Number python3
1134 Armstrong Number python3
1135 Connecting Cities With Minimum Cost python3
1136 Parallel Courses python3
1137 N-th Tribonacci Number python3
1138 Alphabet Board Path python3
1139 Largest 1-Bordered Square python3
1140 Stone Game II python3
1143 Longest Common Subsequence python3
1144 Decrease Elements To Make Array Zigzag python3
1145 Binary Tree Coloring Game python3
1146 Snapshot Array python3
1147 Longest Chunked Palindrome Decomposition python3
1150 Check If a Number Is Majority Element in a Sorted Array python3
1151 Minimum Swaps to Group All 1's Together python3
1152 Analyze User Website Visit Pattern python3
1153 String Transforms Into Another String python3
1154 Day of the Year python3
1155 Number of Dice Rolls With Target Sum python3
1156 Swap For Longest Repeated Character Substring python3
1157 Online Majority Element In Subarray python3
1160 Find Words That Can Be Formed by Characters python3
1161 Maximum Level Sum of a Binary Tree python3
1162 As Far from Land as Possible python3
1163 Last Substring in Lexicographical Order python3
1165 Single-Row Keyboard python3
1166 Design File System python3
1167 Minimum Cost to Connect Sticks python3
1168 Optimize Water Distribution in a Village python3
1169 Invalid Transactions python3
1170 Compare Strings by Frequency of the Smallest Character python3
1172 Dinner Plate Stacks python3
1175 Prime Arrangements python3
1176 Diet Plan Performance python3
1177 Can Make Palindrome from Substring python3
1178 Number of Valid Words for Each Puzzle python3
1180 Count Substrings with Only One Distinct Letter python3
1181 Before and After Puzzle python3
1182 Shortest Distance to Target Color python3
1184 Distance Between Bus Stops python3
1185 Day of the Week python3
1186 Maximum Subarray Sum with One Deletion python3
1187 Make Array Strictly Increasing python3
1189 Maximum Number of Balloons python3
1190 Reverse Substrings Between Each Pair of Parentheses python3
1191 K-Concatenation Maximum Sum python3
1196 How Many Apples Can You Put into the Basket python3
1197 Minimum Knight Moves python3
1198 Find Smallest Common Element in All Rows python3
1199 Minimum Time to Build Blocks python3
1200 Minimum Absolute Difference python3
1201 Ugly Number III python3
1202 Smallest String With Swaps python3
1203 Sort Items by Groups Respecting Dependencies python3
1207 Unique Number of Occurrences python3
1208 Get Equal Substrings Within Budget python3
1209 Remove All Adjacent Duplicates in String II python3
1210 Minimum Moves to Reach Target with Rotations python3
1213 Intersection of Three Sorted Arrays python3
1214 Two Sum BSTs python3
1215 Stepping Numbers python3
1216 Valid Palindrome III python3
1217 Play with Chips python3
1218 Longest Arithmetic Subsequence of Given Difference python3
1219 Path with Maximum Gold python3
1220 Count Vowels Permutation python3
1221 Split a String in Balanced Strings python3
1222 Queens That Can Attack the King python3
1223 Dice Roll Simulation python3
1224 Maximum Equal Frequency python3
1227 Airplane Seat Assignment Probability python3
1228 Missing Number In Arithmetic Progression python3
1229 Meeting Scheduler python3
1230 Toss Strange Coins python3
1231 Divide Chocolate python3
1232 Check If It Is a Straight Line python3
1233 Remove Sub-Folders from the Filesystem python3
1234 Replace the Substring for Balanced String python3
1235 Maximum Profit in Job Scheduling python3
1236 Web Crawler python3
1237 Find Positive Integer Solution for a Given Equation python3
1238 Circular Permutation in Binary Representation python3
1239 Maximum Length of a Concatenated String with Unique Characters python3
1240 Tiling a Rectangle with the Fewest Squares python3
1243 Array Transformation python3
1244 Design A Leaderboard python3
1245 Tree Diameter python3
1246 Palindrome Removal python3
1247 Minimum Swaps to Make Strings Equal python3
1248 Count Number of Nice Subarrays python3
1249 Minimum Remove to Make Valid Parentheses python3
1250 Check If It Is a Good Array python3
1252 Cells with Odd Values in a Matrix python3
1253 Reconstruct a 2-Row Binary Matrix python3
1254 Number of Closed Islands python3
1255 Maximum Score Words Formed by Letters python3
1256 Encode Number python3
1257 Smallest Common Region python3
1258 Synonymous Sentences python3
1259 Handshakes That Don't Cross python3
1260 Shift 2D Grid python3
1261 Find Elements in a Contaminated Binary Tree python3
1262 Greatest Sum Divisible by Three python3
1263 Minimum Moves to Move a Box to Their Target Location python3

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This project is licensed under the MIT License - see the LICENSE.md file for details

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  • Thank you for anyone sharing invaluable ideas on discussions on Leetcode 🙌

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