All LeetCode Problems in Python, Part 4

Every problem shipped in this repository: 1404 problems (309 Easy, 819 Medium, 276 Hard).

#	Problem	Difficulty	Solution
651	4 Keys Keyboard	Medium	solution.py
652	Find Duplicate Subtrees	Medium	solution.py
653	Two Sum IV - Input is a BST	Easy	solution.py
654	Maximum Binary Tree	Medium	solution.py
655	Print Binary Tree	Medium	solution.py
656	Coin Path	Hard	solution.py
657	Robot Return to Origin	Easy	solution.py
658	Find K Closest Elements	Medium	solution.py
659	Split Array into Consecutive Subsequences	Medium	solution.py
660	Remove 9	Hard	solution.py
661	Image Smoother	Easy	solution.py
662	Maximum Width of Binary Tree	Medium	solution.py
663	Equal Tree Partition	Medium	solution.py
664	Strange Printer	Hard	solution.py
665	Non-decreasing Array	Medium	solution.py
666	Path Sum IV	Medium	solution.py
667	Beautiful Arrangement II	Medium	solution.py
668	Kth Smallest Number in Multiplication Table	Hard	solution.py
669	Trim a Binary Search Tree	Medium	solution.py
670	Maximum Swap	Medium	solution.py
671	Second Minimum Node In a Binary Tree	Easy	solution.py
672	Bulb Switcher II	Medium	solution.py
673	Number of Longest Increasing Subsequence	Medium	solution.py
674	Longest Continuous Increasing Subsequence	Easy	solution.py
675	Cut Off Trees for Golf Event	Hard	solution.py
676	Implement Magic Dictionary	Medium	solution.py
677	Map Sum Pairs	Medium	solution.py
678	Valid Parenthesis String	Medium	solution.py
679	24 Game	Hard	solution.py
680	Valid Palindrome II	Easy	solution.py
681	Next Closest Time	Medium	solution.py
682	Baseball Game	Easy	solution.py
683	K Empty Slots	Hard	solution.py
684	Redundant Connection	Medium	solution.py
685	Redundant Connection II	Hard	solution.py
686	Repeated String Match	Medium	solution.py
687	Longest Univalue Path	Medium	solution.py
688	Knight Probability in Chessboard	Medium	solution.py
689	Maximum Sum of 3 Non-Overlapping Subarrays	Hard	solution.py
690	Employee Importance	Medium	solution.py
691	Stickers to Spell Word	Hard	solution.py
692	Top K Frequent Words	Medium	solution.py
693	Binary Number with Alternating Bits	Easy	solution.py
694	Number of Distinct Islands	Medium	solution.py
695	Max Area of Island	Medium	solution.py
696	Count Binary Substrings	Easy	solution.py
697	Degree of an Array	Easy	solution.py
698	Partition to K Equal Sum Subsets	Medium	solution.py
699	Falling Squares	Hard	solution.py
700	Search in a Binary Search Tree	Easy	solution.py
701	Insert into a Binary Search Tree	Medium	solution.py
702	Search in a Sorted Array of Unknown Size	Medium	solution.py
703	Kth Largest Element in a Stream	Easy	solution.py
704	Binary Search	Easy	solution.py
705	Design HashSet	Easy	solution.py
706	Design HashMap	Easy	solution.py
707	Design Linked List	Medium	solution.py
708	Insert into a Sorted Circular Linked List	Medium	solution.py
709	To Lower Case	Easy	solution.py
710	Random Pick with Blacklist	Hard	solution.py
711	Number of Distinct Islands II	Hard	solution.py
712	Minimum ASCII Delete Sum for Two Strings	Medium	solution.py
713	Subarray Product Less Than K	Medium	solution.py
714	Best Time to Buy and Sell Stock with Transaction Fee	Medium	solution.py
715	Range Module	Hard	solution.py
716	Max Stack	Hard	solution.py
717	1-bit and 2-bit Characters	Easy	solution.py
718	Maximum Length of Repeated Subarray	Medium	solution.py
719	Find K-th Smallest Pair Distance	Hard	solution.py
720	Longest Word in Dictionary	Medium	solution.py
721	Accounts Merge	Medium	solution.py
722	Remove Comments	Medium	solution.py
723	Candy Crush	Medium	solution.py
724	Find Pivot Index	Easy	solution.py
725	Split Linked List in Parts	Medium	solution.py
726	Number of Atoms	Hard	solution.py
727	Minimum Window Subsequence	Hard	solution.py
728	Self Dividing Numbers	Easy	solution.py
729	My Calendar I	Medium	solution.py
730	Count Different Palindromic Subsequences	Hard	solution.py
731	My Calendar II	Medium	solution.py
732	My Calendar III	Hard	solution.py
733	Flood Fill	Easy	solution.py
734	Sentence Similarity	Easy	solution.py
735	Asteroid Collision	Medium	solution.py
736	Parse Lisp Expression	Hard	solution.py
737	Sentence Similarity II	Medium	solution.py
738	Monotone Increasing Digits	Medium	solution.py
739	Daily Temperatures	Medium	solution.py
740	Delete and Earn	Medium	solution.py
741	Cherry Pickup	Hard	solution.py
742	Closest Leaf in a Binary Tree	Medium	solution.py
743	Network Delay Time	Medium	solution.py
744	Find Smallest Letter Greater Than Target	Easy	solution.py
745	Prefix and Suffix Search	Hard	solution.py
746	Min Cost Climbing Stairs	Easy	solution.py
747	Largest Number At Least Twice of Others	Easy	solution.py
748	Shortest Completing Word	Easy	solution.py
749	Contain Virus	Hard	solution.py
750	Number Of Corner Rectangles	Medium	solution.py
751	IP to CIDR	Medium	solution.py
752	Open the Lock	Medium	solution.py
753	Cracking the Safe	Hard	solution.py
754	Reach a Number	Medium	solution.py
755	Pour Water	Medium	solution.py
756	Pyramid Transition Matrix	Medium	solution.py
757	Set Intersection Size At Least Two	Hard	solution.py
758	Bold Words in String	Medium	solution.py
759	Employee Free Time	Hard	solution.py
760	Find Anagram Mappings	Easy	solution.py
761	Special Binary String	Hard	solution.py
762	Prime Number of Set Bits in Binary Representation	Easy	solution.py
763	Partition Labels	Medium	solution.py
764	Largest Plus Sign	Medium	solution.py
765	Couples Holding Hands	Hard	solution.py
766	Toeplitz Matrix	Easy	solution.py
767	Reorganize String	Medium	solution.py
768	Max Chunks To Make Sorted II	Hard	solution.py
769	Max Chunks To Make Sorted	Medium	solution.py
770	Basic Calculator IV	Hard	solution.py
771	Jewels and Stones	Easy	solution.py
772	Basic Calculator III	Hard	solution.py
773	Sliding Puzzle	Hard	solution.py
774	Minimize Max Distance to Gas Station	Hard	solution.py
775	Global and Local Inversions	Medium	solution.py
776	Split BST	Medium	solution.py
777	Swap Adjacent in LR String	Medium	solution.py
778	Swim in Rising Water	Hard	solution.py
779	K-th Symbol in Grammar	Medium	solution.py
780	Reaching Points	Hard	solution.py
781	Rabbits in Forest	Medium	solution.py
782	Transform to Chessboard	Hard	solution.py
783	Minimum Distance Between BST Nodes	Easy	solution.py
784	Letter Case Permutation	Medium	solution.py
785	Is Graph Bipartite?	Medium	solution.py
786	K-th Smallest Prime Fraction	Medium	solution.py
787	Cheapest Flights Within K Stops	Medium	solution.py
788	Rotated Digits	Medium	solution.py
789	Escape The Ghosts	Medium	solution.py
790	Domino and Tromino Tiling	Medium	solution.py
791	Custom Sort String	Medium	solution.py
792	Number of Matching Subsequences	Medium	solution.py
793	Preimage Size of Factorial Zeroes Function	Hard	solution.py
794	Valid Tic-Tac-Toe State	Medium	solution.py
795	Number of Subarrays with Bounded Maximum	Medium	solution.py
796	Rotate String	Easy	solution.py
797	All Paths From Source to Target	Medium	solution.py
798	Smallest Rotation with Highest Score	Hard	solution.py
799	Champagne Tower	Medium	solution.py
800	Similar RGB Color	Easy	solution.py
801	Minimum Swaps To Make Sequences Increasing	Hard	solution.py
802	Find Eventual Safe States	Medium	solution.py
803	Bricks Falling When Hit	Hard	solution.py
804	Unique Morse Code Words	Easy	solution.py
805	Split Array With Same Average	Hard	solution.py
806	Number of Lines To Write String	Easy	solution.py
807	Max Increase to Keep City Skyline	Medium	solution.py
808	Soup Servings	Medium	solution.py
809	Expressive Words	Medium	solution.py
810	Chalkboard XOR Game	Hard	solution.py
811	Subdomain Visit Count	Medium	solution.py
812	Largest Triangle Area	Easy	solution.py
813	Largest Sum of Averages	Medium	solution.py
814	Binary Tree Pruning	Medium	solution.py
815	Bus Routes	Hard	solution.py
816	Ambiguous Coordinates	Medium	solution.py
817	Linked List Components	Medium	solution.py
818	Race Car	Hard	solution.py
819	Most Common Word	Easy	solution.py
820	Short Encoding of Words	Medium	solution.py
821	Shortest Distance to a Character	Easy	solution.py
822	Card Flipping Game	Medium	solution.py
823	Binary Trees With Factors	Medium	solution.py
824	Goat Latin	Easy	solution.py
825	Friends Of Appropriate Ages	Medium	solution.py
826	Most Profit Assigning Work	Medium	solution.py
827	Making A Large Island	Hard	solution.py
828	Count Unique Characters of All Substrings of a Given String	Hard	solution.py
829	Consecutive Numbers Sum	Hard	solution.py
830	Positions of Large Groups	Easy	solution.py
831	Masking Personal Information	Medium	solution.py
832	Flipping an Image	Easy	solution.py
833	Find And Replace in String	Medium	solution.py
834	Sum of Distances in Tree	Hard	solution.py
835	Image Overlap	Medium	solution.py
836	Rectangle Overlap	Easy	solution.py
837	New 21 Game	Medium	solution.py
838	Push Dominoes	Medium	solution.py
839	Similar String Groups	Hard	solution.py
840	Magic Squares In Grid	Medium	solution.py
841	Keys and Rooms	Medium	solution.py
842	Split Array into Fibonacci Sequence	Medium	solution.py
843	Guess the Word	Hard	solution.py
844	Backspace String Compare	Easy	solution.py
845	Longest Mountain in Array	Medium	solution.py
846	Hand of Straights	Medium	solution.py
847	Shortest Path Visiting All Nodes	Hard	solution.py
848	Shifting Letters	Medium	solution.py
849	Maximize Distance to Closest Person	Medium	solution.py
850	Rectangle Area II	Hard	solution.py

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All LeetCode Problems in Python, Part 4