Medium LeetCode Problems in Python, Part 3

All 820 Medium LeetCode problems with tested Python solutions. Part 3 of 5: problems 401-600.

Medium holds 820 problems.

#	Problem	Difficulty	Solution
750	Number Of Corner Rectangles	Medium	solution.py
751	IP to CIDR	Medium	solution.py
752	Open the Lock	Medium	solution.py
754	Reach a Number	Medium	solution.py
755	Pour Water	Medium	solution.py
756	Pyramid Transition Matrix	Medium	solution.py
758	Bold Words in String	Medium	solution.py
763	Partition Labels	Medium	solution.py
764	Largest Plus Sign	Medium	solution.py
767	Reorganize String	Medium	solution.py
769	Max Chunks To Make Sorted	Medium	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
779	K-th Symbol in Grammar	Medium	solution.py
781	Rabbits in Forest	Medium	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
794	Valid Tic-Tac-Toe State	Medium	solution.py
795	Number of Subarrays with Bounded Maximum	Medium	solution.py
797	All Paths From Source to Target	Medium	solution.py
799	Champagne Tower	Medium	solution.py
802	Find Eventual Safe States	Medium	solution.py
807	Max Increase to Keep City Skyline	Medium	solution.py
808	Soup Servings	Medium	solution.py
809	Expressive Words	Medium	solution.py
811	Subdomain Visit Count	Medium	solution.py
813	Largest Sum of Averages	Medium	solution.py
814	Binary Tree Pruning	Medium	solution.py
816	Ambiguous Coordinates	Medium	solution.py
817	Linked List Components	Medium	solution.py
820	Short Encoding of Words	Medium	solution.py
822	Card Flipping Game	Medium	solution.py
823	Binary Trees With Factors	Medium	solution.py
825	Friends Of Appropriate Ages	Medium	solution.py
826	Most Profit Assigning Work	Medium	solution.py
831	Masking Personal Information	Medium	solution.py
833	Find And Replace in String	Medium	solution.py
835	Image Overlap	Medium	solution.py
837	New 21 Game	Medium	solution.py
838	Push Dominoes	Medium	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
845	Longest Mountain in Array	Medium	solution.py
846	Hand of Straights	Medium	solution.py
848	Shifting Letters	Medium	solution.py
849	Maximize Distance to Closest Person	Medium	solution.py
851	Loud and Rich	Medium	solution.py
852	Peak Index in a Mountain Array	Medium	solution.py
853	Car Fleet	Medium	solution.py
855	Exam Room	Medium	solution.py
856	Score of Parentheses	Medium	solution.py
858	Mirror Reflection	Medium	solution.py
861	Score After Flipping Matrix	Medium	solution.py
863	All Nodes Distance K in Binary Tree	Medium	solution.py
865	Smallest Subtree with all the Deepest Nodes	Medium	solution.py
866	Prime Palindrome	Medium	solution.py
869	Reordered Power of 2	Medium	solution.py
870	Advantage Shuffle	Medium	solution.py
873	Length of Longest Fibonacci Subsequence	Medium	solution.py
874	Walking Robot Simulation	Medium	solution.py
875	Koko Eating Bananas	Medium	solution.py
877	Stone Game	Medium	solution.py
880	Decoded String at Index	Medium	solution.py
881	Boats to Save People	Medium	solution.py
885	Spiral Matrix III	Medium	solution.py
886	Possible Bipartition	Medium	solution.py
889	Construct Binary Tree from Preorder and Postorder Traversal	Medium	solution.py
890	Find and Replace Pattern	Medium	solution.py
893	Groups of Special-Equivalent Strings	Medium	solution.py
894	All Possible Full Binary Trees	Medium	solution.py
898	Bitwise ORs of Subarrays	Medium	solution.py
900	RLE Iterator	Medium	solution.py
901	Online Stock Span	Medium	solution.py
904	Fruit Into Baskets	Medium	solution.py
907	Sum of Subarray Minimums	Medium	solution.py
909	Snakes and Ladders	Medium	solution.py
910	Smallest Range II	Medium	solution.py
911	Online Election	Medium	solution.py
912	Sort an Array	Medium	solution.py
915	Partition Array into Disjoint Intervals	Medium	solution.py
916	Word Subsets	Medium	solution.py
918	Maximum Sum Circular Subarray	Medium	solution.py
919	Complete Binary Tree Inserter	Medium	solution.py
921	Minimum Add to Make Parentheses Valid	Medium	solution.py
923	3Sum With Multiplicity	Medium	solution.py
926	Flip String to Monotone Increasing	Medium	solution.py
930	Binary Subarrays With Sum	Medium	solution.py
931	Minimum Falling Path Sum	Medium	solution.py
932	Beautiful Array	Medium	solution.py
934	Shortest Bridge	Medium	solution.py
935	Knight Dialer	Medium	solution.py
937	Reorder Data in Log Files	Medium	solution.py
939	Minimum Area Rectangle	Medium	solution.py
945	Minimum Increment to Make Array Unique	Medium	solution.py
946	Validate Stack Sequences	Medium	solution.py
947	Most Stones Removed with Same Row or Column	Medium	solution.py
948	Bag of Tokens	Medium	solution.py
949	Largest Time for Given Digits	Medium	solution.py
950	Reveal Cards In Increasing Order	Medium	solution.py
951	Flip Equivalent Binary Trees	Medium	solution.py
954	Array of Doubled Pairs	Medium	solution.py
955	Delete Columns to Make Sorted II	Medium	solution.py
957	Prison Cells After N Days	Medium	solution.py
958	Check Completeness of a Binary Tree	Medium	solution.py
959	Regions Cut By Slashes	Medium	solution.py
962	Maximum Width Ramp	Medium	solution.py
963	Minimum Area Rectangle II	Medium	solution.py
966	Vowel Spellchecker	Medium	solution.py
967	Numbers With Same Consecutive Differences	Medium	solution.py
969	Pancake Sorting	Medium	solution.py
970	Powerful Integers	Medium	solution.py
971	Flip Binary Tree To Match Preorder Traversal	Medium	solution.py
973	K Closest Points to Origin	Medium	solution.py
974	Subarray Sums Divisible by K	Medium	solution.py
978	Longest Turbulent Subarray	Medium	solution.py
979	Distribute Coins in Binary Tree	Medium	solution.py
981	Time Based Key-Value Store	Medium	solution.py
983	Minimum Cost For Tickets	Medium	solution.py
984	String Without AAA or BBB	Medium	solution.py
985	Sum of Even Numbers After Queries	Medium	solution.py
986	Interval List Intersections	Medium	solution.py
988	Smallest String Starting From Leaf	Medium	solution.py
990	Satisfiability of Equality Equations	Medium	solution.py
991	Broken Calculator	Medium	solution.py
994	Rotting Oranges	Medium	solution.py
998	Maximum Binary Tree II	Medium	solution.py
1004	Max Consecutive Ones III	Medium	solution.py
1011	Capacity To Ship Packages Within D Days	Medium	solution.py
1014	Best Sightseeing Pair	Medium	solution.py
1020	Number of Enclaves	Medium	solution.py
1029	Two City Scheduling	Medium	solution.py
1035	Uncrossed Lines	Medium	solution.py
1041	Robot Bounded In Circle	Medium	solution.py
1043	Partition Array for Maximum Sum	Medium	solution.py
1048	Longest String Chain	Medium	solution.py
1049	Last Stone Weight II	Medium	solution.py
1052	Grumpy Bookstore Owner	Medium	solution.py
1055	Shortest Way to Form String	Medium	solution.py
1057	Campus Bikes	Medium	solution.py
1058	Minimize Rounding Error to Meet Target	Medium	solution.py
1059	All Paths from Source Lead to Destination	Medium	solution.py
1060	Missing Element in Sorted Array	Medium	solution.py
1072	Flip Columns For Maximum Number of Equal Rows	Medium	solution.py
1079	Letter Tile Possibilities	Medium	solution.py
1087	Brace Expansion	Medium	solution.py
1091	Shortest Path in Binary Matrix	Medium	solution.py
1094	Car Pooling	Medium	solution.py
1100	Find K-Length Substrings With No Repeated Characters	Medium	solution.py
1101	The Earliest Moment When Everyone Become Friends	Medium	solution.py
1102	Path With Maximum Minimum Value	Medium	solution.py
1105	Filling Bookcase Shelves	Medium	solution.py
1110	Delete Nodes And Return Forest	Medium	solution.py
1120	Maximum Average Subtree	Medium	solution.py
1129	Shortest Path with Alternating Colors	Medium	solution.py
1135	Connecting Cities With Minimum Cost	Medium	solution.py
1136	Parallel Courses	Medium	solution.py
1140	Stone Game II	Medium	solution.py
1143	Longest Common Subsequence	Medium	solution.py
1152	Analyze User Website Visit Pattern	Medium	solution.py
1155	Number of Dice Rolls With Target Sum	Medium	solution.py
1162	As Far from Land as Possible	Medium	solution.py
1166	Design File System	Medium	solution.py
1190	Reverse Substrings Between Each Pair of Parentheses	Medium	solution.py
1197	Minimum Knight Moves	Medium	solution.py
1198	Find Smallest Common Element in All Rows	Medium	solution.py
1208	Get Equal Substrings Within Budget	Medium	solution.py
1209	Remove All Adjacent Duplicates in String II	Medium	solution.py
1214	Two Sum BSTs	Medium	solution.py
1215	Stepping Numbers	Medium	solution.py
1219	Path with Maximum Gold	Medium	solution.py
1229	Meeting Scheduler	Medium	solution.py
1230	Toss Strange Coins	Medium	solution.py
1233	Remove Sub-Folders from the Filesystem	Medium	solution.py
1236	Web Crawler	Medium	solution.py
1239	Maximum Length of a Concatenated String with Unique Characters	Medium	solution.py
1244	Design A Leaderboard	Medium	solution.py
1245	Tree Diameter	Medium	solution.py
1248	Count Number of Nice Subarrays	Medium	solution.py
1249	Minimum Remove to Make Valid Parentheses	Medium	solution.py
1254	Number of Closed Islands	Medium	solution.py
1258	Synonymous Sentences	Medium	solution.py
1265	Print Immutable Linked List in Reverse	Medium	solution.py
1267	Count Servers that Communicate	Medium	solution.py
1268	Search Suggestions System	Medium	solution.py
1272	Remove Interval	Medium	solution.py
1273	Delete Tree Nodes	Medium	solution.py
1277	Count Square Submatrices with All Ones	Medium	solution.py
1288	Remove Covered Intervals	Medium	solution.py
1291	Sequential Digits	Medium	solution.py
1310	XOR Queries of a Subarray	Medium	solution.py
1325	Delete Leaves With a Given Value	Medium	solution.py

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