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Title: GitHub - yyuxinSun/LeetcodePython: Python & JAVA Solutions for Leetcode · GitHub

Open Graph Title: GitHub - yyuxinSun/LeetcodePython: Python & JAVA Solutions for Leetcode

X Title: GitHub - yyuxinSun/LeetcodePython: Python & JAVA Solutions for Leetcode

Description: Python & JAVA Solutions for Leetcode. Contribute to yyuxinSun/LeetcodePython development by creating an account on GitHub.

Open Graph Description: Python & JAVA Solutions for Leetcode. Contribute to yyuxinSun/LeetcodePython development by creating an account on GitHub.

X Description: Python & JAVA Solutions for Leetcode. Contribute to yyuxinSun/LeetcodePython development by creating an account on GitHub.

Opengraph URL: https://github.com/yyuxinSun/LeetcodePython

X: @github

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Links:

Skip to content	https://github.com/yyuxinSun/LeetcodePython#start-of-content
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Sign in	https://github.com/login?return_to=https%3A%2F%2Fgithub.com%2FyyuxinSun%2FLeetcodePython
GitHub CopilotWrite better code with AI	https://github.com/features/copilot
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	https://github.com/yyuxinSun/LeetcodePython#python--java-solutions-for-leetcode-inspired-by-haoels-leetcode
jwasham's coding-interview-university	https://github.com/jwasham/coding-interview-university
Algorithms in Python	https://github.com/TheAlgorithms/Python
Algorithms in Java	https://github.com/TheAlgorithms/Java
Analytics-Zoo	https://github.com/intel-analytics/analytics-zoo
	https://github.com/yyuxinSun/LeetcodePython#problems--solutions
Python	https://github.com/qiyuangong/leetcode/tree/master/python
Java	https://github.com/qiyuangong/leetcode/tree/master/java
Two Sum	https://leetcode.com/problems/two-sum/
Python	https://github.com/qiyuangong/leetcode/blob/master/python/001_Two_Sum.py
Java	https://github.com/qiyuangong/leetcode/blob/master/java/001_Two_Sum.java
Add Two Numbers	https://leetcode.com/problems/add-two-numbers/
Python	https://github.com/qiyuangong/leetcode/blob/master/python/002_Add_Two_Numbers.py
Java	https://github.com/qiyuangong/leetcode/blob/master/java/002_Add_Two_Numbers.java
Longest Substring Without Repeating Characters	https://leetcode.com/problems/longest-substring-without-repeating-characters/
Python	https://github.com/qiyuangong/leetcode/blob/master/python/003_Longest_Substring_Without_Repeating_Characters.py
Java	https://github.com/qiyuangong/leetcode/blob/master/java/003_Longest_Substring_Without_Repeating_Characters.java
Median of Two Sorted Arrays	https://leetcode.com/problems/median-of-two-sorted-arrays/
Python	https://github.com/qiyuangong/leetcode/blob/master/python/004_Median_of_Two_Sorted_Arrays.py
Java	https://github.com/qiyuangong/leetcode/blob/master/java/004_Median_of_Two_Sorted_Arrays.java
Longest Palindromic Substring	https://leetcode.com/problems/longest-palindromic-substring/
Python	https://github.com/qiyuangong/leetcode/blob/master/python/005_Longest_Palindromic_Substring.py
Java	https://github.com/qiyuangong/leetcode/blob/master/java/005_Longest_Palindromic_Substring.java
Background knowledge	http://en.wikipedia.org/wiki/Longest_palindromic_substring
Reverse Integer	https://leetcode.com/problems/reverse-integer/
Python	https://github.com/qiyuangong/leetcode/blob/master/python/007_Reverse_Integer.py
Java	https://github.com/qiyuangong/leetcode/blob/master/java/007_Reverse_Integer.java
String to Integer (atoi)	https://leetcode.com/problems/string-to-integer-atoi/
Python	https://github.com/qiyuangong/leetcode/blob/master/python/008_String_to_Integer(atoi).py
Java	https://github.com/qiyuangong/leetcode/blob/master/java/008_String_to_Integer(atoi).java
Palindrome Number	https://leetcode.com/problems/palindrome-number/
Python	https://github.com/qiyuangong/leetcode/blob/master/python/009_Palindrome_Number.py
Java	https://github.com/qiyuangong/leetcode/blob/master/java/009_Palindrome_Number.java
Container With Most Water	https://leetcode.com/problems/container-with-most-water/
Python	https://github.com/qiyuangong/leetcode/blob/master/python/011_Container_With_Most_Water.py
Java	https://github.com/qiyuangong/leetcode/blob/master/java/011_Container_With_Most_Water.java
Integer to Roman	https://leetcode.com/problems/integer-to-roman/
Python	https://github.com/qiyuangong/leetcode/blob/master/python/012_Integer_to_Roman.py
Java	https://github.com/qiyuangong/leetcode/blob/master/java/012_Integer_to_Roman.java
Background knowledge	http://www.rapidtables.com/convert/number/how-number-to-roman-numerals.htm
Roman to Integer	https://leetcode.com/problems/roman-to-integer/
Python	https://github.com/qiyuangong/leetcode/blob/master/python/013_Roman_to_Integer.py
3Sum	https://leetcode.com/problems/3sum/
Python	https://github.com/qiyuangong/leetcode/blob/master/python/015_3Sum.py
3Sum Closest	https://leetcode.com/problems/3sum-closest/
Python	https://github.com/qiyuangong/leetcode/blob/master/python/016_3Sum_Closest.py
4Sum	https://leetcode.com/problems/4sum/
Python	https://github.com/qiyuangong/leetcode/blob/master/python/018_4Sum.py
Remove Nth Node From End of List	https://leetcode.com/problems/remove-nth-node-from-end-of-list/
Python	https://github.com/qiyuangong/leetcode/blob/master/python/019_Remove_Nth_Node_From_End_of_List.py
Java	https://github.com/qiyuangong/leetcode/blob/master/java/019_Remove_Nth_Node_From_End_of_List.java
Valid Parentheses	https://leetcode.com/problems/valid-parentheses/
Python	https://github.com/qiyuangong/leetcode/blob/master/python/020_Valid_Parentheses.py
Merge Two Sorted Lists	https://leetcode.com/problems/merge-two-sorted-lists/
Python	https://github.com/qiyuangong/leetcode/blob/master/python/021_Merge_Two_Sorted_Lists.py
Merge k Sorted Lists	https://leetcode.com/problems/merge-k-sorted-lists/
Python	https://github.com/qiyuangong/leetcode/blob/master/python/023_Merge_k_Sorted_Lists.py
Swap Nodes in Pairs	https://leetcode.com/problems/swap-nodes-in-pairs/
Python	https://github.com/qiyuangong/leetcode/blob/master/python/024_Swap_Nodes_in_Pairs.py
Implement strStr()	https://leetcode.com/problems/implement-strstr/
Python	https://github.com/qiyuangong/leetcode/blob/master/python/028_Implement_strStr().py
Search Insert Position	https://leetcode.com/problems/search-insert-position/
Python	https://github.com/qiyuangong/leetcode/blob/master/python/035_Search_Insert_Position.py
Permutations	https://leetcode.com/problems/permutations/
Python	https://github.com/qiyuangong/leetcode/blob/master/python/046_Permutations.py
Permutations II	https://leetcode.com/problems/permutations-ii/
Python	https://github.com/qiyuangong/leetcode/blob/master/python/047_Permutations_II.py
Maximum Subarray	https://leetcode.com/problems/maximum-subarray/
Python	https://github.com/qiyuangong/leetcode/blob/master/python/053_Maximum_Subarray.py
Spiral Matrix	https://leetcode.com/problems/spiral-matrix/
Python	https://github.com/qiyuangong/leetcode/blob/master/python/054_Spiral_Matrix.py
Unique Paths	https://leetcode.com/problems/unique-paths/
Python	https://github.com/qiyuangong/leetcode/blob/master/python/062_Unique_Paths.py
Unique Paths II	https://leetcode.com/problems/unique-paths-ii/
Python	https://github.com/qiyuangong/leetcode/blob/master/python/063_Unique_Paths_II.py
Valid Number	https://leetcode.com/problems/valid-number/
Python	https://github.com/qiyuangong/leetcode/blob/master/python/065_Valid_Number.py
Plus One	https://leetcode.com/problems/plus-one/
Python	https://github.com/qiyuangong/leetcode/blob/master/python/066_Plus_One.py
Climbing Stairs	https://leetcode.com/problems/climbing-stairs/
Python	https://github.com/qiyuangong/leetcode/blob/master/python/070_Climbing_Stairs.py
Edit Distance	https://leetcode.com/problems/edit-distance/
Python	https://github.com/qiyuangong/leetcode/blob/master/python/072_Edit_Distance.py
Background	https://en.wikipedia.org/wiki/Edit_distance
Subsets	https://leetcode.com/problems/subsets/
Python	https://github.com/qiyuangong/leetcode/blob/master/python/078_Subsets.py
Subsets II	https://leetcode.com/problems/subsets-ii/
Python	https://github.com/qiyuangong/leetcode/blob/master/python/090_Subsets_II.py
Binary Tree Inorder Traversal	https://leetcode.com/problems/binary-tree-inorder-traversal/
Python	https://github.com/qiyuangong/leetcode/blob/master/python/094_Binary_Tree_Inorder_Traversal.py
Validate Binary Search Tree	https://leetcode.com/problems/validate-binary-search-tree/
Python	https://github.com/qiyuangong/leetcode/blob/master/python/098_Validate_Binary_Search_Tree.py
Maximum Depth of Binary Tree	https://leetcode.com/problems/maximum-depth-of-binary-tree/
Python	https://github.com/qiyuangong/leetcode/blob/master/python/104_Maximum_Depth_of_Binary_Tree.py
Convert Sorted Array to Binary Search Tree	https://leetcode.com/problems/convert-sorted-array-to-binary-search-tree/
Python	https://github.com/qiyuangong/leetcode/blob/master/python/108_Convert_Sorted_Array_to_Binary_Search_Tree.py
Convert Sorted List to Binary Search Tree	https://leetcode.com/problems/convert-sorted-list-to-binary-search-tree/
Python	https://github.com/qiyuangong/leetcode/blob/master/python/109_Convert_Sorted_List_to_Binary_Search_Tree.py
Balanced Binary Tree	https://leetcode.com/problems/balanced-binary-tree/
Python	https://github.com/qiyuangong/leetcode/blob/master/python/110_Balanced_Binary_Tree.py
Minimum Depth of Binary Tree	https://leetcode.com/problems/minimum-depth-of-binary-tree/
Python	https://github.com/qiyuangong/leetcode/blob/master/python/111_Minimum_Depth_of_Binary_Tree.py
Binary Tree Maximum Path Sum	https://leetcode.com/problems/binary-tree-maximum-path-sum/
Python	https://github.com/qiyuangong/leetcode/blob/master/python/124_Binary_Tree_Maximum_Path_Sum.py
Valid Palindrome	https://leetcode.com/problems/valid-palindrome/
Python	https://github.com/qiyuangong/leetcode/blob/master/python/125_Valid_Palindrome.py
Longest Consecutive Sequence	https://leetcode.com/problems/longest-consecutive-sequence/
Python	https://github.com/qiyuangong/leetcode/blob/master/python/128_Longest_Consecutive_Sequence.py
Clone Graph	https://leetcode.com/problems/clone-graph/
Python	https://github.com/qiyuangong/leetcode/blob/master/python/133_Clone_Graph.py
Single Number	https://leetcode.com/problems/single-number/
Python	https://github.com/qiyuangong/leetcode/blob/master/python/136_Single_Number.py
Single Number II	https://leetcode.com/problems/single-number-ii/
Python	https://github.com/qiyuangong/leetcode/blob/master/python/137_Single_Number_II.py
Copy List with Random Pointer	https://leetcode.com/problems/copy-list-with-random-pointer/
Python	https://github.com/qiyuangong/leetcode/blob/master/python/138_Copy_List_with_Random_Pointer.py
Linked List Cycle	https://leetcode.com/problems/linked-list-cycle/
Python	https://github.com/qiyuangong/leetcode/blob/master/python/141_Linked_List_Cycle.py
Linked List Cycle II	https://discuss.leetcode.com/topic/2975/o-n-solution-by-using-two-pointers-without-change-anything
Python	https://github.com/qiyuangong/leetcode/blob/master/python/142_Linked_List_Cycle_II.py
Reorder List	https://leetcode.com/problems/reorder-list/
Python	https://github.com/qiyuangong/leetcode/blob/master/python/143_Reorder_List.py
Binary Tree Preorder Traversal	https://leetcode.com/problems/binary-tree-preorder-traversal/
Python	https://github.com/qiyuangong/leetcode/blob/master/python/144_Binary_Tree_Preorder_Traversal.py
Binary Tree Postorder Traversal	https://leetcode.com/problems/binary-tree-postorder-traversal/
Python	https://github.com/qiyuangong/leetcode/blob/master/python/145_Binary_Tree_Postorder_Traversal.py
LRU Cache	https://leetcode.com/problems/lru-cache/
Python	https://github.com/qiyuangong/leetcode/blob/master/python/146_LRU_Cache.py
Evaluate Reverse Polish Notation	https://leetcode.com/problems/evaluate-reverse-polish-notation/
Python	https://github.com/qiyuangong/leetcode/blob/master/python/150_Evaluate_Reverse_Polish_Notation.py
Reverse Words in a String	https://discuss.leetcode.com/category/159/reverse-words-in-a-string
Python	https://github.com/qiyuangong/leetcode/blob/master/python/151_Reverse_Words_in_a_String.py
Maximum Product Subarray	https://leetcode.com/problems/maximum-product-subarray/
Python	https://github.com/qiyuangong/leetcode/blob/master/python/152_Maximum_Product_Subarray.py
Find Minimum in Rotated Sorted Array	https://leetcode.com/problems/find-minimum-in-rotated-sorted-array/
Python	https://github.com/qiyuangong/leetcode/blob/master/python/153_Find_Minimum_in_Rotated_Sorted_Array.py
Find Minimum in Rotated Sorted Array II	https://leetcode.com/problems/find-minimum-in-rotated-sorted-array-ii/
Python	https://github.com/qiyuangong/leetcode/blob/master/python/154_Find_Minimum_in_Rotated_Sorted_Array_II.py
Min Stack	https://leetcode.com/problems/min-stack/
Python	https://github.com/qiyuangong/leetcode/blob/master/python/155_Min_Stack.py
Java	https://github.com/qiyuangong/leetcode/blob/master/java/155_Min_Stack.java
Binary Tree Upside Down	https://leetcode.com/problems/binary-tree-upside-down/
Python	https://github.com/qiyuangong/leetcode/blob/master/python/156_Binary_Tree_Upside_Down.py
Read N Characters Given Read4	https://leetcode.com/problems/read-n-characters-given-read4/
Python	https://github.com/qiyuangong/leetcode/blob/master/python/157_Read_N_Characters_Given_Read4.py
Read N Characters Given Read4 II - Call multiple times	https://leetcode.com/problems/read-n-characters-given-read4-ii-call-multiple-times/
Python	https://github.com/qiyuangong/leetcode/blob/master/python/158_Read_N_Characters_Given_Read4_II_Call_multiple_times.py
Longest Substring with At Most Two Distinct Characters	https://leetcode.com/problems/longest-substring-with-at-most-two-distinct-characters/
Python	https://github.com/qiyuangong/leetcode/blob/master/python/159_Longest_Substring_with_At_Most_Two_Distinct_Characters.py
One Edit Distance	https://leetcode.com/problems/one-edit-distance/
Python	https://github.com/qiyuangong/leetcode/blob/master/python/161_One_Edit_Distance.py
Edit distance	https://leetcode.com/problems/edit-distance/
Missing Ranges	https://leetcode.com/problems/missing-ranges/
Python	https://github.com/qiyuangong/leetcode/blob/master/python/163_Missing_Ranges.py
Fraction to Recurring Decimal	https://leetcode.com/problems/fraction-to-recurring-decimal/
Python	https://github.com/qiyuangong/leetcode/blob/master/python/166_Fraction_to_Recurring_Decimal.py
Two Sum II - Input array is sorted	https://leetcode.com/problems/two-sum-ii-input-array-is-sorted/
Python	https://github.com/qiyuangong/leetcode/blob/master/python/167_Two_Sum_II_Input_array_is_sorted.py
Two Sum III - Data structure design	https://leetcode.com/problems/two-sum-iii-data-structure-design/
Python	https://github.com/qiyuangong/leetcode/blob/master/python/170_Two_Sum_III-Data_structure_design.py
Largest Number	https://leetcode.com/problems/largest-number/
Python	https://github.com/qiyuangong/leetcode/blob/master/python/179_Largest_Number.py
Java	https://github.com/qiyuangong/leetcode/blob/master/java/179_Largest_Number.java
Reverse Words in a String II	https://leetcode.com/problems/reverse-words-in-a-string-ii/
Python	https://github.com/qiyuangong/leetcode/blob/master/python/186_Reverse_Words_in_a_String_II.py
House Robber	https://leetcode.com/problems/house-robber/
Python	https://github.com/qiyuangong/leetcode/blob/master/python/198_House_Robber.py
Number of Islands	https://leetcode.com/problems/number-of-islands/
Python	https://github.com/qiyuangong/leetcode/blob/master/python/200_Number_of_Islands.py
Count Primes	https://leetcode.com/problems/count-primes/
Python	https://github.com/qiyuangong/leetcode/blob/master/python/204_Count_Primes.py
Java	https://github.com/qiyuangong/leetcode/blob/master/java/204_Count_Primes.java
CPP	https://github.com/qiyuangong/leetcode/blob/master/cpp/204_Count_Primes.cpp
Sieve of Eratosthenes	https://en.wikipedia.org/wiki/Sieve_of_Eratosthenes#Algorithm_complexity
Reverse Linked List	https://leetcode.com/problems/reverse-linked-list/
Python	https://github.com/qiyuangong/leetcode/blob/master/python/206_Reverse_Linked_List.py
Java	https://github.com/qiyuangong/leetcode/blob/master/java/206_Reverse_Linked_List.java
CPP	https://github.com/qiyuangong/leetcode/blob/master/cpp/206_Reverse_Linked_List.cpp
Course Schedule	https://leetcode.com/problems/course-schedule/
Python	https://github.com/qiyuangong/leetcode/blob/master/python/207_Course_Schedule.py
House Robber II	https://leetcode.com/problems/house-robber-ii/
Python	https://github.com/qiyuangong/leetcode/blob/master/python/213_House_Robber_II.py
Kth Largest Element in an Array	https://leetcode.com/problems/kth-largest-element-in-an-array/
Python	https://github.com/qiyuangong/leetcode/blob/master/python/215_Kth_Largest_Element_in_an_Array.py
Java	https://github.com/qiyuangong/leetcode/blob/master/java/215_Kth_Largest_Element_in_an_Array.java
Combination Sum III	https://leetcode.com/problems/combination-sum-iii/
Python	https://github.com/qiyuangong/leetcode/blob/master/python/216_Combination_Sum_III.py
Contains Duplicate	https://leetcode.com/problems/contains-duplicate/
Python	https://github.com/qiyuangong/leetcode/blob/master/python/217_Contains_Duplicate.py
Contains Duplicate II	https://leetcode.com/problems/contains-duplicate-ii/
Python	https://github.com/qiyuangong/leetcode/blob/master/python/219_Contains_Duplicate_II.py
Contains Duplicate III	https://leetcode.com/problems/contains-duplicate-iii/
Python	https://github.com/qiyuangong/leetcode/blob/master/python/220_Contains_Duplicate_III.py
Maximal Square	https://leetcode.com/problems/maximal-square/
Python	https://github.com/qiyuangong/leetcode/blob/master/python/221_Maximal_Square.py
Rectangle Area	https://leetcode.com/problems/rectangle-area/
Python	https://github.com/qiyuangong/leetcode/blob/master/python/223_Rectangle_Area.py
Java	https://github.com/qiyuangong/leetcode/blob/master/java/223_Rectangle_Area.java
Summary Ranges	https://leetcode.com/problems/summary-ranges/
Python	https://github.com/qiyuangong/leetcode/blob/master/python/228_Summary_Ranges.py
Lowest Common Ancestor of a Binary Tree	https://leetcode.com/problems/lowest-common-ancestor-of-a-binary-tree/
Python	https://github.com/qiyuangong/leetcode/blob/master/python/236_Lowest_Common_Ancestor_of_a_Binary_Tree.py
Java	https://github.com/qiyuangong/leetcode/blob/master/java/236_Lowest_Common_Ancestor_of_a_Binary_Tree.java
Product of Array Except Self	https://leetcode.com/problems/product-of-array-except-self/
Python	https://github.com/qiyuangong/leetcode/blob/master/python/238_Product_of_Array_Except_Self.py
Java	https://github.com/qiyuangong/leetcode/blob/master/java/238_Product_of_Array_Except_Self.java
Shortest Word Distance	https://leetcode.com/problems/shortest-word-distance/
Python	https://github.com/qiyuangong/leetcode/blob/master/python/243_Shortest_Word_Distance.py
Strobogrammatic Number	https://leetcode.com/problems/strobogrammatic-number/
Python	https://github.com/qiyuangong/leetcode/blob/master/python/246_Strobogrammatic_Number.py
Group Shifted Strings	https://leetcode.com/problems/group-shifted-strings/
Python	https://github.com/qiyuangong/leetcode/blob/master/python/249_Group_Shifted_Strings.py
Meeting Rooms	https://leetcode.com/problems/meeting-rooms/
Python	https://github.com/qiyuangong/leetcode/blob/master/python/252_Meeting_Rooms.py
Meeting Rooms II	https://leetcode.com/problems/meeting-rooms-ii/
Python	https://github.com/qiyuangong/leetcode/blob/master/python/253_Meeting_Rooms_II.py
Java	https://github.com/qiyuangong/leetcode/blob/master/java/253_Meeting_Rooms_II.java
3Sum Smaller	https://leetcode.com/problems/3sum-smaller/
Python	https://github.com/qiyuangong/leetcode/blob/master/python/259_3Sum_Smaller.py
Palindrome Permutation	https://leetcode.com/problems/palindrome-permutation/
Python	https://github.com/qiyuangong/leetcode/blob/master/python/266_Palindrome_Permutation.py
Palindrome Permutation II	https://leetcode.com/problems/palindrome-permutation-ii/
Python	https://github.com/qiyuangong/leetcode/blob/master/python/267_Palindrome_Permutation_II.py
Permutations II	https://leetcode.com/problems/permutations-ii/
Missing Number	https://leetcode.com/problems/missing-number/
Python	https://github.com/qiyuangong/leetcode/blob/master/python/268_Missing_Number.py
Java	https://github.com/qiyuangong/leetcode/blob/master/java/268_Missing_Number.java
Closest Binary Search Tree Value	https://leetcode.com/problems/closest-binary-search-tree-value/
Python	https://github.com/qiyuangong/leetcode/blob/master/python/270_Closest_Binary_Search_Tree_Value.py
Integer to English Words	https://leetcode.com/problems/integer-to-english-words/
Python	https://github.com/qiyuangong/leetcode/blob/master/python/273_Integer_to_English_Words.py
Java	https://github.com/qiyuangong/leetcode/blob/master/python/273_Integer_to_English_Words.java
H-Index	https://leetcode.com/problems/h-index/
Python	https://github.com/qiyuangong/leetcode/blob/master/python/274_H-Index.py
Background	https://en.wikipedia.org/wiki/H-index
Paint Fence	https://leetcode.com/problems/paint-fence/
Python	https://github.com/qiyuangong/leetcode/blob/master/python/276_Paint_Fence.py
Wiggle Sort	https://leetcode.com/problems/wiggle-sort/
Python	https://github.com/qiyuangong/leetcode/blob/master/python/280_Wiggle_Sort.py
Walls and Gates	https://leetcode.com/problems/walls-and-gates/
Python	https://github.com/qiyuangong/leetcode/blob/master/python/286_Walls_and_Gates.py
Unique Word Abbreviation	https://leetcode.com/problems/unique-word-abbreviation/
Python	https://github.com/qiyuangong/leetcode/blob/master/python/288_Unique_Word_Abbreviation.py
Flip Game	https://leetcode.com/problems/flip-game/
Python	https://github.com/qiyuangong/leetcode/blob/master/python/293_Flip_Game.py
Flip Game II	https://leetcode.com/problems/flip-game-ii/
Python	https://github.com/qiyuangong/leetcode/blob/master/python/294_Flip_Game_II.py
Sprague-Grundy Function	https://discuss.leetcode.com/topic/27282/theory-matters-from-backtracking-128ms-to-dp-0ms
Best Meeting Point	https://leetcode.com/problems/best-meeting-point/
Python	https://github.com/qiyuangong/leetcode/blob/master/python/296_Best_Meeting_Point.py
Binary Tree Longest Consecutive Sequence	https://leetcode.com/problems/binary-tree-longest-consecutive-sequence/
Python	https://github.com/qiyuangong/leetcode/blob/master/python/298_Binary_Tree_Longest_Consecutive_Sequence.py
Number of Islands II	https://leetcode.com/problems/number-of-islands-ii/
Python	https://github.com/qiyuangong/leetcode/blob/master/python/305_Number_of_Islands_II.py
Coin Change	https://leetcode.com/problems/coin-change/
Python	https://github.com/qiyuangong/leetcode/blob/master/python/322_Coin_Change.py
Palindrome Pairs	https://leetcode.com/problems/palindrome-pairs/
Python	https://github.com/qiyuangong/leetcode/blob/master/python/336_Palindrome_Pairs.py
Java	https://github.com/qiyuangong/leetcode/blob/master/java/336_Palindrome_Pairs.java
House Robber III	https://leetcode.com/problems/house-robber-iii/
Python	https://github.com/qiyuangong/leetcode/blob/master/python/337_House_Robber_III.py
Nested List Weight Sum	https://leetcode.com/problems/nested-list-weight-sum/
Python	https://github.com/qiyuangong/leetcode/blob/master/python/339_Nested_List_Weight_Sum.py
Longest Substring with At Most K Distinct Characters	https://leetcode.com/problems/longest-substring-with-at-most-k-distinct-characters/
Python	https://github.com/qiyuangong/leetcode/blob/master/python/340_Longest_Substring_with_At_Most_K_Distinct_Characters.py
Moving Average from Data Stream	https://leetcode.com/problems/moving-average-from-data-stream/
Python	https://github.com/qiyuangong/leetcode/blob/master/python/346_Moving_Average_from_Data_Stream.py
Top K Frequent Elements	https://leetcode.com/problems/top-k-frequent-elements/
Python	https://github.com/qiyuangong/leetcode/blob/master/python/347_Top_K_Frequent_Elements.py
Java	https://github.com/qiyuangong/leetcode/blob/master/java/347_Top_K_Frequent_Elements.java
Android Unlock Patterns	https://leetcode.com/problems/android-unlock-patterns/
Python	https://github.com/qiyuangong/leetcode/blob/master/python/351_Android_Unlock_Patterns.py
Logger Rate Limiter	https://leetcode.com/problems/logger-rate-limiter/
Python	https://github.com/qiyuangong/leetcode/blob/master/python/359_Logger_Rate_Limiter.py
Find Leaves of Binary Tree	https://leetcode.com/problems/find-leaves-of-binary-tree/
Python	https://github.com/qiyuangong/leetcode/blob/master/python/366_Find_Leaves_of_Binary_Tree.py
Valid Perfect Square	https://leetcode.com/problems/valid-perfect-square
Python	https://github.com/qiyuangong/leetcode/blob/master/python/367_Valid_Perfect_Square.py
Java	https://github.com/qiyuangong/leetcode/blob/master/java/367_Valid_Perfect_Square.java
Integer square root	https://en.wikipedia.org/wiki/Integer_square_root#Using_only_integer_division
Largest Divisible Subset	https://leetcode.com/problems/largest-divisible-subset/
Python	https://github.com/qiyuangong/leetcode/blob/master/python/368_Largest_Divisible_Subset.py
Plus One Linked List	https://leetcode.com/problems/plus-one-linked-list/
Python	https://github.com/qiyuangong/leetcode/blob/master/python/369_Plus_One_Linked_List.py
Range Addition	https://leetcode.com/problems/range-addition/
Python	https://github.com/qiyuangong/leetcode/blob/master/python/370_Range_Addition.py
Insert, Delete, Get Random	https://leetcode.com/problems/insert-delete-getrandom-o1/
Python	https://github.com/qiyuangong/leetcode/blob/master/python/380_Insert_Delete_GetRandom.py
Ransom Note	https://leetcode.com/problems/ransom-note/
Python	https://github.com/qiyuangong/leetcode/blob/master/python/383_Ransom_Note.py
Java	https://github.com/qiyuangong/leetcode/blob/master/java/383_Ransom_Note.java
Shuffle an Array	https://leetcode.com/problems/shuffle-an-array/
Python	https://github.com/qiyuangong/leetcode/blob/master/python/384_Shuffle_an_Array.py
Fisher–Yates shuffle	https://en.wikipedia.org/wiki/Fisher%E2%80%93Yates_shuffle
First Unique Character in a String	https://leetcode.com/problems/first-unique-character-in-a-string/
Python	https://github.com/qiyuangong/leetcode/blob/master/python/387_First_Unique_Character_in_a_String.py
Java	https://github.com/qiyuangong/leetcode/blob/master/java/387_First_Unique_Character_in_a_String.java
Longest Absolute File Path	https://leetcode.com/problems/longest-absolute-file-path/
Python	https://github.com/qiyuangong/leetcode/blob/master/python/388_Longest_Absolute_File_Path.py
Find the Difference	https://leetcode.com/problems/find-the-difference/
Python	https://github.com/qiyuangong/leetcode/blob/master/python/389_Find_the_Difference.py
Java	https://github.com/qiyuangong/leetcode/blob/master/java/389_Find_the_Difference.java
Nth Digit	https://leetcode.com/problems/nth-digit/
Python	https://github.com/qiyuangong/leetcode/blob/master/python/400_Nth_Digit.py
Java	https://github.com/qiyuangong/leetcode/blob/master/java/400_Nth_Digit.java
Binary Watch	https://leetcode.com/problems/binary-watch/
Python	https://github.com/qiyuangong/leetcode/blob/master/python/401_Binary_Watch.py
Java	https://github.com/qiyuangong/leetcode/blob/master/java/401_Binary_Watch.java
Sum of Left Leaves	https://leetcode.com/problems/sum-of-left-leaves/
Python	https://github.com/qiyuangong/leetcode/blob/master/python/404_Sum_of_Left_Leaves.py
Java	https://github.com/qiyuangong/leetcode/blob/master/java/404_Sum_of_Left_Leaves.java
Convert a Number to Hexadecimal	https://leetcode.com/problems/convert-a-number-to-hexadecimal/
Python	https://github.com/qiyuangong/leetcode/blob/master/python/405_Convert_a_Number_to_Hexadecimal.py
Java	https://github.com/qiyuangong/leetcode/blob/master/java/405_Convert_a_Number_to_Hexadecimal.java
Two's complement	https://en.wikipedia.org/wiki/Two%27s_complement
Valid Word Abbreviation	https://leetcode.com/problems/valid-word-abbreviation/
Python	https://github.com/qiyuangong/leetcode/blob/master/python/408_Valid_Word_Abbreviation.py
Longest Palindrome	https://leetcode.com/problems/longest-palindrome/description/
Python	https://github.com/qiyuangong/leetcode/blob/master/python/409_Longest_Palindrome.py
Java	https://github.com/qiyuangong/leetcode/blob/master/java/409_Longest_Palindrome.java
Fizz Buzz	https://leetcode.com/problems/fizz-buzz/
Python	https://github.com/qiyuangong/leetcode/blob/master/python/412_Fizz_Buzz.py
Java	https://github.com/qiyuangong/leetcode/blob/master/java/412_Fizz_Buzz.java
Cpp	https://github.com/qiyuangong/leetcode/blob/master/cpp/412_Fizz_Buzz.cpp
Third Maximum Number	https://leetcode.com/problems/third-maximum-number/
Python	https://github.com/qiyuangong/leetcode/blob/master/python/414_Third_Maximum_Number.py
Java	https://github.com/qiyuangong/leetcode/blob/master/java/414_Third_Maximum_Number.java
Add Strings	https://leetcode.com/problems/add-strings/
Python	https://github.com/qiyuangong/leetcode/blob/master/python/415_Add_Strings.py
Java	https://github.com/qiyuangong/leetcode/blob/master/java/415_Add_Strings.java
Partition Equal Subset Sum	https://leetcode.com/problems/partition-equal-subset-sum/
Python	https://github.com/qiyuangong/leetcode/blob/master/python/416_Partition_Equal_Subset_Sum.py
Maximum XOR of Two Numbers in an Array	https://leetcode.com/problems/maximum-xor-of-two-numbers-in-an-array/
Python	https://github.com/qiyuangong/leetcode/blob/master/python/421_Maximum_XOR_of_Two_Numbers_in_an_Array.py
Valid Word Square	https://leetcode.com/problems/valid-word-square/
Python	https://github.com/qiyuangong/leetcode/blob/master/python/422_Valid_Word_Square.py
Number of Segments in a String	https://leetcode.com/problems/number-of-segments-in-a-string/description/
Python	https://github.com/qiyuangong/leetcode/blob/master/python/434_Number_of_Segments_in_a_String.py
Java	https://github.com/qiyuangong/leetcode/blob/master/java/434_Number_of_Segments_in_a_String.java
Path Sum III	https://leetcode.com/problems/path-sum-iii/
Python	https://github.com/qiyuangong/leetcode/blob/master/python/437_Path_Sum_III.py
Java	https://github.com/qiyuangong/leetcode/blob/master/java/437_Path_Sum_III.java
Find All Anagrams in a String	https://leetcode.com/problems/find-all-anagrams-in-a-string/
Python	https://github.com/qiyuangong/leetcode/blob/master/python/438_Find_All_Anagrams_in_a_String.py
Java	https://github.com/qiyuangong/leetcode/blob/master/java/438_Find_All_Anagrams_in_a_String.java
Arranging Coins	https://leetcode.com/problems/arranging-coins/
Python	https://github.com/qiyuangong/leetcode/blob/master/python/441_Arranging_Coins.py
String Compression	https://leetcode.com/problems/string-compression/description/
Python	https://github.com/qiyuangong/leetcode/blob/master/python/443_String_Compression.py
Java	https://github.com/qiyuangong/leetcode/blob/master/java/443_String_Compression.java
Find All Numbers Disappeared in an Array	https://leetcode.com/problems/find-all-numbers-disappeared-in-an-array/
Python	https://github.com/qiyuangong/leetcode/blob/master/python/448_Find_All_Numbers_Disappeared_in_an_Array.py
Java	https://github.com/qiyuangong/leetcode/blob/master/java/448_Find_All_Numbers_Disappeared_in_an_Array.java
Number of Segments in a String	https://leetcode.com/problems/minimum-moves-to-equal-array-elements/description/
Python	https://github.com/qiyuangong/leetcode/blob/master/python/453_Minimum_Moves_to_Equal_Array_Elements.py
Java	https://github.com/qiyuangong/leetcode/blob/master/java/453_Minimum_Moves_to_Equal_Array_Elements.java
Poor Pigs	https://leetcode.com/problems/poor-pigs/
Python	https://github.com/qiyuangong/leetcode/blob/master/python/458_Poor_Pigs.py
Java	https://github.com/qiyuangong/leetcode/blob/master/java/458_Poor_Pigs.java
2 pigs for 5 * 5 metric	https://leetcode.com/problems/poor-pigs/discuss/94266/Another-explanation-and-solution
Hamming Distance	https://leetcode.com/problems/hamming-distance/
Python	https://github.com/qiyuangong/leetcode/blob/master/python/461_Hamming_Distance.py
Java	https://github.com/qiyuangong/leetcode/blob/master/java/461_Hamming_Distance.java
Island Perimeter	https://leetcode.com/problems/island-perimeter/
Python	https://github.com/qiyuangong/leetcode/blob/master/python/463_Island_Perimeter.py
Java	https://github.com/qiyuangong/leetcode/blob/master/java/463_Island_Perimeter.java
Heaters	https://leetcode.com/problems/heaters/
Python	https://github.com/qiyuangong/leetcode/blob/master/python/475_Heaters.py
Java	https://github.com/qiyuangong/leetcode/blob/master/java/475_Heaters.java
Largest Palindrome Product	https://leetcode.com/problems/largest-palindrome-product/
Python	https://github.com/qiyuangong/leetcode/blob/master/python/479_Largest_Palindrome_Product.py
Java	https://github.com/qiyuangong/leetcode/blob/master/java/479_Largest_Palindrome_Product.java
Math	https://leetcode.com/problems/largest-palindrome-product/discuss/96305/Python-Solution-Using-Math-In-48ms
License Key Formatting	https://leetcode.com/problems/license-key-formatting/
Python	https://github.com/qiyuangong/leetcode/blob/master/python/482_License_Key_Formatting.py
Java	https://github.com/qiyuangong/leetcode/blob/master/java/482_License_Key_Formatting.java
Max Consecutive Ones	https://leetcode.com/problems/max-consecutive-ones/
Python	https://github.com/qiyuangong/leetcode/blob/master/python/485_Max_Consecutive_Ones.py
Java	https://github.com/qiyuangong/leetcode/blob/master/java/485_Max_Consecutive_Ones.java
Fibonacci Number	https://leetcode.com/problems/fibonacci-number/
Python	https://github.com/qiyuangong/leetcode/blob/master/python/509_Fibonacci_Number.py
Java	https://github.com/qiyuangong/leetcode/blob/master/java/509_Fibonacci_Number.java
Convert BST to Greater Tree	https://leetcode.com/problems/convert-bst-to-greater-tree/description/
Python	https://github.com/qiyuangong/leetcode/blob/master/python/538_Convert_BST_to_Greater_Tree.py
Java	https://github.com/qiyuangong/leetcode/blob/master/java/538_Convert_BST_to_Greater_Tree.java
Reverse String II	https://leetcode.com/problems/reverse-string-ii/solution/
Python	https://github.com/qiyuangong/leetcode/blob/master/python/541_Reverse_String_II.py
Java	https://github.com/qiyuangong/leetcode/blob/master/java/541_Reverse_String_II.java
Diameter of Binary Tree	https://leetcode.com/problems/diameter-of-binary-tree/description/
Python	https://github.com/qiyuangong/leetcode/blob/master/python/543_Diameter_of_Binary_Tree.py
Java	https://github.com/qiyuangong/leetcode/blob/master/java/543_Diameter_of_Binary_Tree.java
Friend Circles	https://leetcode.com/problems/friend-circles/
Python	https://github.com/qiyuangong/leetcode/blob/master/python/547_Friend_Circles.py
Java	https://github.com/qiyuangong/leetcode/blob/master/java/547_Friend_Circles.java
Reverse Words in a String III	https://leetcode.com/problems/reverse-words-in-a-string-iii/
Python	https://github.com/qiyuangong/leetcode/blob/master/python/557_Reverse_Words_in_a_String_III.py
Java	https://github.com/qiyuangong/leetcode/blob/master/java/557_Reverse_Words_in_a_String_III.java
Subarray Sum Equals K	https://leetcode.com/problems/subarray-sum-equals-k/
Python	https://github.com/qiyuangong/leetcode/blob/master/python/560_Subarray_Sum_Equals_K.py
Java	https://github.com/qiyuangong/leetcode/blob/master/java/560_Subarray_Sum_Equals_K.java
Subtree of Another Tree	https://leetcode.com/problems/subtree-of-another-tree/description/
Python	https://github.com/qiyuangong/leetcode/blob/master/python/572_Subtree_of_Another_Tree.py
Java	https://github.com/qiyuangong/leetcode/blob/master/java/572_Subtree_of_Another_Tree.java
Shortest Unsorted Continuous Subarray	https://leetcode.com/problems/subtree-of-another-tree/description/
Python	https://github.com/qiyuangong/leetcode/blob/master/python/581_Shortest_Unsorted_Continuous_Subarray.py
Java	https://github.com/qiyuangong/leetcode/blob/master/java/581_Shortest_Unsorted_Continuous_Subarray.java
Can Place Flowers	https://leetcode.com/problems/can-place-flowers/
Python	https://github.com/qiyuangong/leetcode/blob/master/python/605_Can_Place_Flowers.py
Java	https://github.com/qiyuangong/leetcode/blob/master/java/605_Can_Place_Flowers.java
Merge Two Binary Trees	https://leetcode.com/problems/merge-two-binary-trees/description/
Python	https://github.com/qiyuangong/leetcode/blob/master/python/617_Merge_Two_Binary_Trees.py
Java	https://github.com/qiyuangong/leetcode/blob/master/java/617_Merge_Two_Binary_Trees.java
Maximum Product of Three Numbers	https://leetcode.com/problems/maximum-product-of-three-numbers/
Python	https://github.com/qiyuangong/leetcode/blob/master/python/628_Maximum_Product_of_Three_Numbers.py
Java	https://github.com/qiyuangong/leetcode/blob/master/java/628_Maximum_Product_of_Three_Numbers.java
Maximum Binary Tree	https://leetcode.com/problems/maximum-binary-tree/
Python	https://github.com/qiyuangong/leetcode/blob/master/python/654_Maximum_Binary_Tree.py
Java	https://github.com/qiyuangong/leetcode/blob/master/java/654_Maximum_Binary_Tree.java
Non-decreasing Array	https://leetcode.com/problems/non-decreasing-array/
Python	https://github.com/qiyuangong/leetcode/blob/master/python/665_Non-decreasing_Array.py
Java	https://github.com/qiyuangong/leetcode/blob/master/java/665_Non-decreasing_Array.java
Kth Smallest Number in Multiplication Table	https://leetcode.com/problems/kth-smallest-number-in-multiplication-table/
Python	https://github.com/qiyuangong/leetcode/blob/master/python/668_Kth_Smallest_Number_in_Multiplication_Table.py
Java	https://github.com/qiyuangong/leetcode/blob/master/java/668_Kth_Smallest_Number_in_Multiplication_Table.java
Cpp	https://github.com/qiyuangong/leetcode/blob/master/cpp/668_Kth_Smallest_Number_in_Multiplication_Table.cpp
Second Minimum Node In a Binary Tree	https://leetcode.com/problems/second-minimum-node-in-a-binary-tree/
Python	https://github.com/qiyuangong/leetcode/blob/master/python/671_Second_Minimum_Node_In_a_Binary_Tree.py
Java	https://github.com/qiyuangong/leetcode/blob/master/java/671_Second_Minimum_Node_In_a_Binary_Tree.java
Longest Continuous Increasing Subsequence	https://leetcode.com/problems/longest-continuous-increasing-subsequence/
Python	https://github.com/qiyuangong/leetcode/blob/master/python/674_Longest_Continuous_Increasing_Subsequence.py
Java	https://github.com/qiyuangong/leetcode/blob/master/java/674_Longest_Continuous_Increasing_Subsequence.java
Valid Palindrome II	https://leetcode.com/problems/valid-palindrome-ii/
Python	https://github.com/qiyuangong/leetcode/blob/master/python/680_Valid_Palindrome_II.py
Java	https://github.com/qiyuangong/leetcode/blob/master/java/680_Valid_Palindrome_II.java
Top K Frequent Words	https://leetcode.com/problems/top-k-frequent-words/
Python	https://github.com/qiyuangong/leetcode/blob/master/python/692_Top_K_Frequent_Words.py
Java	https://github.com/qiyuangong/leetcode/blob/master/java/692_Top_K_Frequent_Words.java
Max Area of Island	https://leetcode.com/problems/max-area-of-island/
Python	https://github.com/qiyuangong/leetcode/blob/master/python/695_Max_Area_of_Island.py
Java	https://github.com/qiyuangong/leetcode/blob/master/java/695_Max_Area_of_Island.java
Degree of an Array	https://leetcode.com/problems/degree-of-an-array/
Python	https://github.com/qiyuangong/leetcode/blob/master/python/697_Degree_of_an_Array.py
Java	https://github.com/qiyuangong/leetcode/blob/master/java/697_Degree_of_an_Array.java
Search in a Binary Search Tree	https://leetcode.com/problems/search-in-a-binary-search-tree/
Python	https://github.com/qiyuangong/leetcode/blob/master/python/700_Search_in_a_Binary_Search_Tree.py
Java	https://github.com/qiyuangong/leetcode/blob/master/java/700_Search_in_a_Binary_Search_Tree.java
Kth Largest Element in a Stream	https://leetcode.com/problems/kth-largest-element-in-a-stream/
Python	https://github.com/qiyuangong/leetcode/blob/master/python/703_Kth_Largest_Element_in_a_Stream.py
Java	https://github.com/qiyuangong/leetcode/blob/master/java/703_Kth_Largest_Element_in_a_Stream.java
Design HashMap	https://leetcode.com/problems/design-hashmap/
Python	https://github.com/qiyuangong/leetcode/blob/master/python/706_Design_HashMap.py
Java	https://github.com/qiyuangong/leetcode/blob/master/java/706_Design_HashMap.java
To Lower Case	https://leetcode.com/problems/to-lower-case/
Python	https://github.com/qiyuangong/leetcode/blob/master/python/709_To_Lower_Case.py
Java	https://github.com/qiyuangong/leetcode/blob/master/java/709_To_Lower_Case.java
Max Stack	https://leetcode.com/problems/max-stack/
Python	https://github.com/qiyuangong/leetcode/blob/master/python/716_Max_Stack.py
Java	https://github.com/qiyuangong/leetcode/blob/master/java/716_Max_Stack.java
1-bit and 2-bit Characters	https://leetcode.com/problems/1-bit-and-2-bit-characters/
Python	https://github.com/qiyuangong/leetcode/blob/master/python/717_1-bit_and_2-bit_Characters.py
Java	https://github.com/qiyuangong/leetcode/blob/master/java/717_1-bit_and_2-bit_Characters.java
Longest Word in Dictionary	https://leetcode.com/problems/longest-word-in-dictionary/
Python	https://github.com/qiyuangong/leetcode/blob/master/python/720_Longest_Word_in_Dictionary.py
Java	https://github.com/qiyuangong/leetcode/blob/master/java/720_Longest_Word_in_Dictionary.java
Find Pivot Index	https://leetcode.com/problems/find-pivot-index/
Python	https://github.com/qiyuangong/leetcode/blob/master/python/724_Find_Pivot_Index.py
Java	https://github.com/qiyuangong/leetcode/blob/master/java/724_Find_Pivot_Index.java
Self Dividing Numbers	https://leetcode.com/problems/self-dividing-numbers/solution/
Python	https://github.com/qiyuangong/leetcode/blob/master/python/728_Self_Dividing_Numbers.py
Java	https://github.com/qiyuangong/leetcode/blob/master/java/728_Self_Dividing_Numbers.java
Flood Fill	https://leetcode.com/problems/flood-fill/
Python	https://github.com/qiyuangong/leetcode/blob/master/python/733_Flood_Fill.py
Java	https://github.com/qiyuangong/leetcode/blob/master/java/733_Flood_Fill.java
Network Delay Time	https://leetcode.com/problems/network-delay-time/
Python	https://github.com/qiyuangong/leetcode/blob/master/python/743_Network_Delay_Time.py
Java	https://github.com/qiyuangong/leetcode/blob/master/java/743_Network_Delay_Time.java
IP to CIDR	https://leetcode.com/problems/ip-to-cidr/
Python	https://github.com/qiyuangong/leetcode/blob/master/python/751_IP_to_CIDR.py
Java	https://github.com/qiyuangong/leetcode/blob/master/java/751_IP_to_CIDR.java
Find Anagram Mappings	https://leetcode.com/problems/find-anagram-mappings/
Python	https://github.com/qiyuangong/leetcode/blob/master/python/760_Find_Anagram_Mappings.py
Java	https://github.com/qiyuangong/leetcode/blob/master/java/760_Find_Anagram_Mappings.java
Toeplitz Matrix	https://leetcode.com/problems/toeplitz-matrix/
Python	https://github.com/qiyuangong/leetcode/blob/master/python/766_Toeplitz_Matrix.py
Java	https://github.com/qiyuangong/leetcode/blob/master/java/766_Toeplitz_Matrix.java
Jewels and Stones	https://leetcode.com/problems/jewels-and-stones/description/
Python	https://github.com/qiyuangong/leetcode/blob/master/python/771_Jewels_and_Stones.py
Java	https://github.com/qiyuangong/leetcode/blob/master/java/771_Jewels_and_Stones.java
Oneline	https://leetcode.com/problems/jewels-and-stones/discuss/113574/1-liners-PythonJavaRuby
Letter Case Permutation	https://leetcode.com/problems/letter-case-permutation/
Python	https://github.com/qiyuangong/leetcode/blob/master/python/784_Letter_Case_Permutation.py
Java	https://github.com/qiyuangong/leetcode/blob/master/java/784_Letter_Case_Permutation.java
Unique Morse Code Words	https://leetcode.com/problems/unique-morse-code-words/description/
Python	https://github.com/qiyuangong/leetcode/blob/master/python/804_Unique_Morse_Code_Words.py
Java	https://github.com/qiyuangong/leetcode/blob/master/java/804_Unique_Morse_Code_Words.java
Subdomain Visit Count	https://leetcode.com/problems/subdomain-visit-count/
Python	https://github.com/qiyuangong/leetcode/blob/master/python/811_Subdomain_Visit_Count.py
Java	https://github.com/qiyuangong/leetcode/blob/master/java/811_Subdomain_Visit_Count.java
Most Common Word	https://leetcode.com/problems/most-common-word/
Python	https://github.com/qiyuangong/leetcode/blob/master/python/819_Most_Common_Word.py
Java	https://github.com/qiyuangong/leetcode/blob/master/java/819_Most_Common_Word.java
Flipping an Image	https://leetcode.com/problems/flipping-an-image/
Python	https://github.com/qiyuangong/leetcode/blob/master/python/832_Flipping_an_Image.py
Java	https://github.com/qiyuangong/leetcode/blob/master/java/832_Flipping_an_Image.java
Rectangle Overlap	https://leetcode.com/problems/rectangle-overlap/
Python	https://github.com/qiyuangong/leetcode/blob/master/python/836_Rectangle_Overlap.py
Java	https://github.com/qiyuangong/leetcode/blob/master/java/836_Rectangle_Overlap.java
Backspace String Compare	https://leetcode.com/problems/backspace-string-compare/
Python	https://github.com/qiyuangong/leetcode/blob/master/python/844_Backspace_String_Compare.py
Java	https://github.com/qiyuangong/leetcode/blob/master/java/844_Backspace_String_Compare.java
Peak Index in a Mountain Array	https://leetcode.com/problems/peak-index-in-a-mountain-array/
Python	https://github.com/qiyuangong/leetcode/blob/master/python/852_Peak_Index_in_a_Mountain_Array.py
Java	https://github.com/qiyuangong/leetcode/blob/master/java/852_Peak_Index_in_a_Mountain_Array.java
Transpose Matrix	https://leetcode.com/problems/transpose-matrix/
Python	https://github.com/qiyuangong/leetcode/blob/master/python/867_Transpose_Matrix.py
Java	https://github.com/qiyuangong/leetcode/blob/master/java/867_Transpose_Matrix.java
Binary Gap	https://leetcode.com/problems/binary-gap/
Python	https://github.com/qiyuangong/leetcode/blob/master/python/868_Binary_Gap.py
Java	https://github.com/qiyuangong/leetcode/blob/master/java/868_Binary_Gap.java
Leaf-Similar Trees	https://leetcode.com/problems/leaf-similar-trees/
Python	https://github.com/qiyuangong/leetcode/blob/master/python/872_Leaf-Similar_Trees.py
Java	https://github.com/qiyuangong/leetcode/blob/master/java/872_Leaf-Similar_Trees.java
Middle of the Linked List	https://leetcode.com/problems/middle-of-the-linked-list/
Python	https://github.com/qiyuangong/leetcode/blob/master/python/876_Middle_of_the_Linked_List.py
Java	https://github.com/qiyuangong/leetcode/blob/master/java/876_Middle_of_the_Linked_List.java
Fruit Into Baskets	https://leetcode.com/problems/fruit-into-baskets/
Python	https://github.com/qiyuangong/leetcode/blob/master/python/904_Fruit_Into_Baskets.py
Java	https://github.com/qiyuangong/leetcode/blob/master/java/904_Fruit_Into_Baskets.java
Sort Array By Parity	https://leetcode.com/problems/sort-array-by-parity/
Python	https://github.com/qiyuangong/leetcode/blob/master/python/905_Sort_Array_By_Parity.py
Java	https://github.com/qiyuangong/leetcode/blob/master/java/905_Sort_Array_By_Parity.java
Sort Array By Parity II	https://leetcode.com/problems/sort-array-by-parity-ii/
Python	https://github.com/qiyuangong/leetcode/blob/master/python/922_Sort_Array_By_Parity_II.py
Java	https://github.com/qiyuangong/leetcode/blob/master/java/922_Sort_Array_By_Parity_II.java
Unique Email Addresses	https://leetcode.com/problems/unique-email-addresses/
Python	https://github.com/qiyuangong/leetcode/blob/master/python/929_Unique_Email_Addresses.py
Java	https://github.com/qiyuangong/leetcode/blob/master/java/929_Unique_Email_Addresses.java
Number of Recent Calls	https://leetcode.com/problems/number-of-recent-calls/
Python	https://github.com/qiyuangong/leetcode/blob/master/python/933_Number_of_Recent_Calls.py
Java	https://github.com/qiyuangong/leetcode/blob/master/java/933_Number_of_Recent_Calls.java
Reorder Log Files	https://leetcode.com/problems/reorder-log-files/
Python	https://github.com/qiyuangong/leetcode/blob/master/python/937_Reorder_Log_Files.py
Java	https://github.com/qiyuangong/leetcode/blob/master/java/937_Reorder_Log_Files.java
Minimum Increment to Make Array Unique	https://leetcode.com/problems/minimum-increment-to-make-array-unique/
Python	https://github.com/qiyuangong/leetcode/blob/master/python/945_Minimum_Increment_to_Make_Array_Unique.py
Java	https://github.com/qiyuangong/leetcode/blob/master/java/945_Minimum_Increment_to_Make_Array_Unique.java
Validate Stack Sequences	https://leetcode.com/problems/validate-stack-sequences/
Python	https://github.com/qiyuangong/leetcode/blob/master/python/946_Validate_Stack_Sequences.py
Java	https://github.com/qiyuangong/leetcode/blob/master/java/946_Validate_Stack_Sequences.java
Verifying an Alien Dictionary	https://leetcode.com/contest/weekly-contest-114/problems/verifying-an-alien-dictionary/
Python	https://github.com/qiyuangong/leetcode/blob/master/python/953_Verifying_an_Alien_Dictionary.py
Java	https://github.com/qiyuangong/leetcode/blob/master/java/953_Verifying_an_Alien_Dictionary.java
Array of Doubled Pairs	https://leetcode.com/contest/weekly-contest-114/problems/array-of-doubled-pairs/
Python	https://github.com/qiyuangong/leetcode/blob/master/python/954_Array_of_Doubled_Pairs.py
Java	https://github.com/qiyuangong/leetcode/blob/master/java/954_Array_of_Doubled_Pairs.java
N-Repeated Element in Size 2N Array	https://leetcode.com/problems/n-repeated-element-in-size-2n-array/submissions/
Python	https://github.com/qiyuangong/leetcode/blob/master/python/961_N-Repeated_Element_in_Size_2N_Array.py
Java	https://github.com/qiyuangong/leetcode/blob/master/java/961_N-Repeated_Element_in_Size_2N_Array.java
Maximum Width Ramp	https://leetcode.com/problems/maximum-width-ramp/
Python	https://github.com/qiyuangong/leetcode/blob/master/python/962_Maximum_Width_Ramp.py
Java	https://github.com/qiyuangong/leetcode/blob/master/java/962_Maximum_Width_Ramp.java
Squares of a Sorted Array	https://leetcode.com/problems/squares-of-a-sorted-array/
Python	https://github.com/qiyuangong/leetcode/blob/master/python/977_Squares_of_a_Sorted_Array.py
Java	https://github.com/qiyuangong/leetcode/blob/master/java/977_Squares_of_a_Sorted_Array.java
K Closest Points to Origin	https://leetcode.com/problems/k-closest-points-to-origin/
Python	https://github.com/qiyuangong/leetcode/blob/master/python/973_K_Closest_Points_to_Origin.py
Java	https://github.com/qiyuangong/leetcode/blob/master/java/973_K_Closest_Points_to_Origin.java
Time Based Key-Value Store	https://leetcode.com/problems/time-based-key-value-store/
Python	https://github.com/qiyuangong/leetcode/blob/master/python/981_Time_Based_Store.py
Fixed Point	https://leetcode.com/problems/fixed-point/
Python	https://github.com/qiyuangong/leetcode/blob/master/python/1064_Fixed_Point.py
Java	https://github.com/qiyuangong/leetcode/blob/master/java/1064_Fixed_Point.java
Duplicate Zeros	https://leetcode.com/problems/duplicate-zeros/
Python	https://github.com/qiyuangong/leetcode/blob/master/python/1089_Duplicate_Zeros.py
Java	https://github.com/qiyuangong/leetcode/blob/master/java/1089_Duplicate_Zeros.java
Defanging an IP Address	https://leetcode.com/problems/defanging-an-ip-address/
Python	https://github.com/qiyuangong/leetcode/blob/master/python/1108_Defanging_an_IP_Address.py
Java	https://github.com/qiyuangong/leetcode/blob/master/java/1108_Defanging_an_IP_Address.java
Maximum Number of Balloons	https://leetcode.com/problems/maximum-number-of-balloons/
Java	https://github.com/qiyuangong/leetcode/blob/master/java/1189_Maximum_Number_of_Balloons.java
Shift 2D Grid	https://leetcode.com/problems/shift-2d-grid/
Python	https://github.com/qiyuangong/leetcode/blob/master/python/1260_Shift_2D_Grid.py
Java	https://github.com/qiyuangong/leetcode/blob/master/java/1260_Shift_2D_Grid.java
Convert Binary Number in a Linked List to Integer	https://leetcode.com/problems/convert-binary-number-in-a-linked-list-to-integer/
Python	https://github.com/qiyuangong/leetcode/blob/master/python/1290_Convert_Binary_Number_in_a_Linked_List_to_Integer.py
Find N Unique Integers Sum up to Zero	https://leetcode.com/problems/find-n-unique-integers-sum-up-to-zero/
Python	https://github.com/qiyuangong/leetcode/blob/master/python/1304_Find_N_Unique_Integers_Sum_up_to_Zero.py
Java	https://github.com/qiyuangong/leetcode/blob/master/java/1304_Find_N_Unique_Integers_Sum_up_to_Zero.java
XOR Queries of a Subarray	https://leetcode.com/problems/xor-queries-of-a-subarray
Python	https://github.com/qiyuangong/leetcode/blob/master/python/1310_XOR_Queries_of_a_Subarray.py
Java	https://github.com/qiyuangong/leetcode/blob/master/java/1310_XOR_Queries_of_a_Subarray.java
Cpp	https://github.com/qiyuangong/leetcode/blob/master/cpp/1310_XOR_Queries_of_a_Subarray.cpp
Maximum 69 Number	https://leetcode.com/problems/maximum-69-number/
Python	https://github.com/qiyuangong/leetcode/blob/master/python/1323_Maximum_69_Number.py
Java	https://github.com/qiyuangong/leetcode/blob/master/java/1323_Maximum_69_Number.java
The K Weakest Rows in a Matrix	https://leetcode.com/problems/the-k-weakest-rows-in-a-matrix/
Python	https://github.com/qiyuangong/leetcode/blob/master/python/1337_The_K_Weakest_Rows_in_a_Matrix.py
Java	https://github.com/qiyuangong/leetcode/blob/master/java/1337_The_K_Weakest_Rows_in_a_Matrix.java
Number of Steps to Reduce a Number to Zero	https://leetcode.com/problems/number-of-steps-to-reduce-a-number-to-zero/
Python	https://github.com/qiyuangong/leetcode/blob/master/python/1342_Number_of_Steps_to_Reduce_a_Number_to_Zero.py
How Many Numbers Are Smaller Than the Current Number	https://leetcode.com/problems/how-many-numbers-are-smaller-than-the-current-number/
Python	https://github.com/qiyuangong/leetcode/blob/master/python/1365_How_Many_Numbers_Are_Smaller_Than_the_Current_Number.py
Java	https://github.com/qiyuangong/leetcode/blob/master/java/1365_How_Many_Numbers_Are_Smaller_Than_the_Current_Number.java
Running Sum of 1d Array	https://leetcode.com/problems/running-sum-of-1d-array/
Python	https://github.com/qiyuangong/leetcode/blob/master/python/1480_Running_Sum_of_1d_Array.py
Java	https://github.com/qiyuangong/leetcode/blob/master/java/1480_Running_Sum_of_1d_Array.java
Kth Missing Positive Number	https://leetcode.com/problems/kth-missing-positive-number/
Java	https://github.com/qiyuangong/leetcode/blob/master/java/1539_Kth_Missing_Positive_Number.java
Remove One Element to Make the Array Strictly Increasing	https://leetcode.com/problems/remove-one-element-to-make-the-array-strictly-increasing/
Python	https://github.com/qiyuangong/leetcode/blob/master/python/1909_Remove_One_Element_to_Make_the_Array_Strictly_Increasing.py
Minimize the Difference Between Target and Chosen Elements	https://leetcode.com/problems/minimize-the-difference-between-target-and-chosen-elements/
Java	https://github.com/qiyuangong/leetcode/blob/master/java/1981_Minimize_the_Difference_Between_Target_and_Chosen_Elements.java
Count Days Spent Together	https://leetcode.com/problems/count-days-spent-together/
Python	https://github.com/qiyuangong/leetcode/blob/master/python/2409_Count_Days_Spent_Together.py
Smallest Even Multiple	https://leetcode.com/problems/smallest-even-multiple/
Python	https://github.com/qiyuangong/leetcode/blob/master/python/2413_Smallest_Even_Multiple.py
Minimize XOR	https://leetcode.com/problems/minimize-xor/
Python	https://github.com/qiyuangong/leetcode/blob/master/python/2429_Minimize_XOR.py.py
Median of Two Sorted Arrays	https://leetcode.com/problems/median-of-two-sorted-arrays/
	https://github.com/yyuxinSun/LeetcodePython#other-leetcode-repos
LeetCode Algorithms ~anishLearnsToCode	https://github.com/anishLearnsToCode/leetcode-algorithms
haoel's leetcode	https://github.com/haoel/leetcode
soulmachine's leetcode	https://github.com/soulmachine/leetcode
kamyu104's LeetCode	https://github.com/kamyu104/LeetCode
gouthampradhan's leetcode	https://github.com/gouthampradhan/leetcode
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