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Title: GitHub - halking/leetcode: Python & JAVA Solutions for Leetcode · GitHub

Open Graph Title: GitHub - halking/leetcode: Python & JAVA Solutions for Leetcode

X Title: GitHub - halking/leetcode: Python & JAVA Solutions for Leetcode

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

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

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

Opengraph URL: https://github.com/halking/leetcode

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https://github.com/halking/leetcode#python--java-solutions-for-leetcode-inspired-by-haoels-leetcode
jwasham's coding-interview-universityhttps://github.com/jwasham/coding-interview-university
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https://github.com/halking/leetcode#problems--solutions
Pythonhttps://github.com/qiyuangong/leetcode/tree/master/python
Javahttps://github.com/qiyuangong/leetcode/tree/master/java
Two Sumhttps://leetcode.com/problems/two-sum/
Pythonhttps://github.com/qiyuangong/leetcode/blob/master/python/001_Two_Sum.py
Javahttps://github.com/qiyuangong/leetcode/blob/master/java/001_Two_Sum.java
Add Two Numbershttps://leetcode.com/problems/add-two-numbers/
Pythonhttps://github.com/qiyuangong/leetcode/blob/master/python/002_Add_Two_Numbers.py
Javahttps://github.com/qiyuangong/leetcode/blob/master/java/002_Add_Two_Numbers.java
Longest Substring Without Repeating Charactershttps://leetcode.com/problems/longest-substring-without-repeating-characters/
Pythonhttps://github.com/qiyuangong/leetcode/blob/master/python/003_Longest_Substring_Without_Repeating_Characters.py
Javahttps://github.com/qiyuangong/leetcode/blob/master/java/003_Longest_Substring_Without_Repeating_Characters.java
Median of Two Sorted Arrayshttps://leetcode.com/problems/median-of-two-sorted-arrays/
Pythonhttps://github.com/qiyuangong/leetcode/blob/master/python/004_Median_of_Two_Sorted_Arrays.py
Javahttps://github.com/qiyuangong/leetcode/blob/master/java/004_Median_of_Two_Sorted_Arrays.java
Longest Palindromic Substringhttps://leetcode.com/problems/longest-palindromic-substring/
Pythonhttps://github.com/qiyuangong/leetcode/blob/master/python/005_Longest_Palindromic_Substring.py
Javahttps://github.com/qiyuangong/leetcode/blob/master/java/005_Longest_Palindromic_Substring.java
Background knowledgehttp://en.wikipedia.org/wiki/Longest_palindromic_substring
Reverse Integerhttps://leetcode.com/problems/reverse-integer/
Pythonhttps://github.com/qiyuangong/leetcode/blob/master/python/007_Reverse_Integer.py
Javahttps://github.com/qiyuangong/leetcode/blob/master/java/007_Reverse_Integer.java
String to Integer (atoi)https://leetcode.com/problems/string-to-integer-atoi/
Pythonhttps://github.com/qiyuangong/leetcode/blob/master/python/008_String_to_Integer(atoi).py
Javahttps://github.com/qiyuangong/leetcode/blob/master/java/008_String_to_Integer(atoi).java
Palindrome Numberhttps://leetcode.com/problems/palindrome-number/
Pythonhttps://github.com/qiyuangong/leetcode/blob/master/python/009_Palindrome_Number.py
Javahttps://github.com/qiyuangong/leetcode/blob/master/java/009_Palindrome_Number.java
Container With Most Waterhttps://leetcode.com/problems/container-with-most-water/
Pythonhttps://github.com/qiyuangong/leetcode/blob/master/python/011_Container_With_Most_Water.py
Javahttps://github.com/qiyuangong/leetcode/blob/master/java/011_Container_With_Most_Water.java
Integer to Romanhttps://leetcode.com/problems/integer-to-roman/
Pythonhttps://github.com/qiyuangong/leetcode/blob/master/python/012_Integer_to_Roman.py
Javahttps://github.com/qiyuangong/leetcode/blob/master/java/012_Integer_to_Roman.java
Background knowledgehttp://www.rapidtables.com/convert/number/how-number-to-roman-numerals.htm
Roman to Integerhttps://leetcode.com/problems/roman-to-integer/
Pythonhttps://github.com/qiyuangong/leetcode/blob/master/python/013_Roman_to_Integer.py
3Sumhttps://leetcode.com/problems/3sum/
Pythonhttps://github.com/qiyuangong/leetcode/blob/master/python/015_3Sum.py
3Sum Closesthttps://leetcode.com/problems/3sum-closest/
Pythonhttps://github.com/qiyuangong/leetcode/blob/master/python/016_3Sum_Closest.py
4Sumhttps://leetcode.com/problems/4sum/
Pythonhttps://github.com/qiyuangong/leetcode/blob/master/python/018_4Sum.py
Remove Nth Node From End of Listhttps://leetcode.com/problems/remove-nth-node-from-end-of-list/
Pythonhttps://github.com/qiyuangong/leetcode/blob/master/python/019_Remove_Nth_Node_From_End_of_List.py
Javahttps://github.com/qiyuangong/leetcode/blob/master/java/019_Remove_Nth_Node_From_End_of_List.java
Valid Parentheseshttps://leetcode.com/problems/valid-parentheses/
Pythonhttps://github.com/qiyuangong/leetcode/blob/master/python/020_Valid_Parentheses.py
Merge Two Sorted Listshttps://leetcode.com/problems/merge-two-sorted-lists/
Pythonhttps://github.com/qiyuangong/leetcode/blob/master/python/021_Merge_Two_Sorted_Lists.py
Merge k Sorted Listshttps://leetcode.com/problems/merge-k-sorted-lists/
Pythonhttps://github.com/qiyuangong/leetcode/blob/master/python/023_Merge_k_Sorted_Lists.py
Swap Nodes in Pairshttps://leetcode.com/problems/swap-nodes-in-pairs/
Pythonhttps://github.com/qiyuangong/leetcode/blob/master/python/024_Swap_Nodes_in_Pairs.py
Implement strStr()https://leetcode.com/problems/implement-strstr/
Pythonhttps://github.com/qiyuangong/leetcode/blob/master/python/028_Implement_strStr().py
Search Insert Positionhttps://leetcode.com/problems/search-insert-position/
Pythonhttps://github.com/qiyuangong/leetcode/blob/master/python/035_Search_Insert_Position.py
Permutationshttps://leetcode.com/problems/permutations/
Pythonhttps://github.com/qiyuangong/leetcode/blob/master/python/046_Permutations.py
Permutations IIhttps://leetcode.com/problems/permutations-ii/
Pythonhttps://github.com/qiyuangong/leetcode/blob/master/python/047_Permutations_II.py
Maximum Subarrayhttps://leetcode.com/problems/maximum-subarray/
Pythonhttps://github.com/qiyuangong/leetcode/blob/master/python/053_Maximum_Subarray.py
Spiral Matrixhttps://leetcode.com/problems/spiral-matrix/
Pythonhttps://github.com/qiyuangong/leetcode/blob/master/python/054_Spiral_Matrix.py
Unique Pathshttps://leetcode.com/problems/unique-paths/
Pythonhttps://github.com/qiyuangong/leetcode/blob/master/python/062_Unique_Paths.py
Unique Paths IIhttps://leetcode.com/problems/unique-paths-ii/
Pythonhttps://github.com/qiyuangong/leetcode/blob/master/python/063_Unique_Paths_II.py
Valid Numberhttps://leetcode.com/problems/valid-number/
Pythonhttps://github.com/qiyuangong/leetcode/blob/master/python/065_Valid_Number.py
Plus Onehttps://leetcode.com/problems/plus-one/
Pythonhttps://github.com/qiyuangong/leetcode/blob/master/python/066_Plus_One.py
Climbing Stairshttps://leetcode.com/problems/climbing-stairs/
Pythonhttps://github.com/qiyuangong/leetcode/blob/master/python/070_Climbing_Stairs.py
Edit Distancehttps://leetcode.com/problems/edit-distance/
Pythonhttps://github.com/qiyuangong/leetcode/blob/master/python/072_Edit_Distance.py
Backgroundhttps://en.wikipedia.org/wiki/Edit_distance
Subsetshttps://leetcode.com/problems/subsets/
Pythonhttps://github.com/qiyuangong/leetcode/blob/master/python/078_Subsets.py
Subsets IIhttps://leetcode.com/problems/subsets-ii/
Pythonhttps://github.com/qiyuangong/leetcode/blob/master/python/090_Subsets_II.py
Binary Tree Inorder Traversalhttps://leetcode.com/problems/binary-tree-inorder-traversal/
Pythonhttps://github.com/qiyuangong/leetcode/blob/master/python/094_Binary_Tree_Inorder_Traversal.py
Validate Binary Search Treehttps://leetcode.com/problems/validate-binary-search-tree/
Pythonhttps://github.com/qiyuangong/leetcode/blob/master/python/098_Validate_Binary_Search_Tree.py
Maximum Depth of Binary Treehttps://leetcode.com/problems/maximum-depth-of-binary-tree/
Pythonhttps://github.com/qiyuangong/leetcode/blob/master/python/104_Maximum_Depth_of_Binary_Tree.py
Convert Sorted Array to Binary Search Treehttps://leetcode.com/problems/convert-sorted-array-to-binary-search-tree/
Pythonhttps://github.com/qiyuangong/leetcode/blob/master/python/108_Convert_Sorted_Array_to_Binary_Search_Tree.py
Convert Sorted List to Binary Search Treehttps://leetcode.com/problems/convert-sorted-list-to-binary-search-tree/
Pythonhttps://github.com/qiyuangong/leetcode/blob/master/python/109_Convert_Sorted_List_to_Binary_Search_Tree.py
Balanced Binary Treehttps://leetcode.com/problems/balanced-binary-tree/
Pythonhttps://github.com/qiyuangong/leetcode/blob/master/python/110_Balanced_Binary_Tree.py
Minimum Depth of Binary Treehttps://leetcode.com/problems/minimum-depth-of-binary-tree/
Pythonhttps://github.com/qiyuangong/leetcode/blob/master/python/111_Minimum_Depth_of_Binary_Tree.py
Binary Tree Maximum Path Sumhttps://leetcode.com/problems/binary-tree-maximum-path-sum/
Pythonhttps://github.com/qiyuangong/leetcode/blob/master/python/124_Binary_Tree_Maximum_Path_Sum.py
Valid Palindromehttps://leetcode.com/problems/valid-palindrome/
Pythonhttps://github.com/qiyuangong/leetcode/blob/master/python/125_Valid_Palindrome.py
Longest Consecutive Sequencehttps://leetcode.com/problems/longest-consecutive-sequence/
Pythonhttps://github.com/qiyuangong/leetcode/blob/master/python/128_Longest_Consecutive_Sequence.py
Clone Graphhttps://leetcode.com/problems/clone-graph/
Pythonhttps://github.com/qiyuangong/leetcode/blob/master/python/133_Clone_Graph.py
Single Numberhttps://leetcode.com/problems/single-number/
Pythonhttps://github.com/qiyuangong/leetcode/blob/master/python/136_Single_Number.py
Single Number IIhttps://leetcode.com/problems/single-number-ii/
Pythonhttps://github.com/qiyuangong/leetcode/blob/master/python/137_Single_Number_II.py
Copy List with Random Pointerhttps://leetcode.com/problems/copy-list-with-random-pointer/
Pythonhttps://github.com/qiyuangong/leetcode/blob/master/python/138_Copy_List_with_Random_Pointer.py
Linked List Cyclehttps://leetcode.com/problems/linked-list-cycle/
Pythonhttps://github.com/qiyuangong/leetcode/blob/master/python/141_Linked_List_Cycle.py
Linked List Cycle IIhttps://discuss.leetcode.com/topic/2975/o-n-solution-by-using-two-pointers-without-change-anything
Pythonhttps://github.com/qiyuangong/leetcode/blob/master/python/142_Linked_List_Cycle_II.py
Reorder Listhttps://leetcode.com/problems/reorder-list/
Pythonhttps://github.com/qiyuangong/leetcode/blob/master/python/143_Reorder_List.py
Binary Tree Preorder Traversalhttps://leetcode.com/problems/binary-tree-preorder-traversal/
Pythonhttps://github.com/qiyuangong/leetcode/blob/master/python/144_Binary_Tree_Preorder_Traversal.py
Binary Tree Postorder Traversalhttps://leetcode.com/problems/binary-tree-postorder-traversal/
Pythonhttps://github.com/qiyuangong/leetcode/blob/master/python/145_Binary_Tree_Postorder_Traversal.py
LRU Cachehttps://leetcode.com/problems/lru-cache/
Pythonhttps://github.com/qiyuangong/leetcode/blob/master/python/146_LRU_Cache.py
Evaluate Reverse Polish Notationhttps://leetcode.com/problems/evaluate-reverse-polish-notation/
Pythonhttps://github.com/qiyuangong/leetcode/blob/master/python/150_Evaluate_Reverse_Polish_Notation.py
Reverse Words in a Stringhttps://discuss.leetcode.com/category/159/reverse-words-in-a-string
Pythonhttps://github.com/qiyuangong/leetcode/blob/master/python/151_Reverse_Words_in_a_String.py
Maximum Product Subarrayhttps://leetcode.com/problems/maximum-product-subarray/
Pythonhttps://github.com/qiyuangong/leetcode/blob/master/python/152_Maximum_Product_Subarray.py
Find Minimum in Rotated Sorted Arrayhttps://leetcode.com/problems/find-minimum-in-rotated-sorted-array/
Pythonhttps://github.com/qiyuangong/leetcode/blob/master/python/153_Find_Minimum_in_Rotated_Sorted_Array.py
Find Minimum in Rotated Sorted Array IIhttps://leetcode.com/problems/find-minimum-in-rotated-sorted-array-ii/
Pythonhttps://github.com/qiyuangong/leetcode/blob/master/python/154_Find_Minimum_in_Rotated_Sorted_Array_II.py
Min Stackhttps://leetcode.com/problems/min-stack/
Pythonhttps://github.com/qiyuangong/leetcode/blob/master/python/155_Min_Stack.py
Javahttps://github.com/qiyuangong/leetcode/blob/master/java/155_Min_Stack.java
Binary Tree Upside Downhttps://leetcode.com/problems/binary-tree-upside-down/
Pythonhttps://github.com/qiyuangong/leetcode/blob/master/python/156_Binary_Tree_Upside_Down.py
Read N Characters Given Read4https://leetcode.com/problems/read-n-characters-given-read4/
Pythonhttps://github.com/qiyuangong/leetcode/blob/master/python/157_Read_N_Characters_Given_Read4.py
Read N Characters Given Read4 II - Call multiple timeshttps://leetcode.com/problems/read-n-characters-given-read4-ii-call-multiple-times/
Pythonhttps://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 Charactershttps://leetcode.com/problems/longest-substring-with-at-most-two-distinct-characters/
Pythonhttps://github.com/qiyuangong/leetcode/blob/master/python/159_Longest_Substring_with_At_Most_Two_Distinct_Characters.py
One Edit Distancehttps://leetcode.com/problems/one-edit-distance/
Pythonhttps://github.com/qiyuangong/leetcode/blob/master/python/161_One_Edit_Distance.py
Edit distancehttps://leetcode.com/problems/edit-distance/
Missing Rangeshttps://leetcode.com/problems/missing-ranges/
Pythonhttps://github.com/qiyuangong/leetcode/blob/master/python/163_Missing_Ranges.py
Fraction to Recurring Decimalhttps://leetcode.com/problems/fraction-to-recurring-decimal/
Pythonhttps://github.com/qiyuangong/leetcode/blob/master/python/166_Fraction_to_Recurring_Decimal.py
Two Sum II - Input array is sortedhttps://leetcode.com/problems/two-sum-ii-input-array-is-sorted/
Pythonhttps://github.com/qiyuangong/leetcode/blob/master/python/167_Two_Sum_II_Input_array_is_sorted.py
Two Sum III - Data structure designhttps://leetcode.com/problems/two-sum-iii-data-structure-design/
Pythonhttps://github.com/qiyuangong/leetcode/blob/master/python/170_Two_Sum_III-Data_structure_design.py
Largest Numberhttps://leetcode.com/problems/largest-number/
Pythonhttps://github.com/qiyuangong/leetcode/blob/master/python/179_Largest_Number.py
Javahttps://github.com/qiyuangong/leetcode/blob/master/java/179_Largest_Number.java
Reverse Words in a String IIhttps://leetcode.com/problems/reverse-words-in-a-string-ii/
Pythonhttps://github.com/qiyuangong/leetcode/blob/master/python/186_Reverse_Words_in_a_String_II.py
House Robberhttps://leetcode.com/problems/house-robber/
Pythonhttps://github.com/qiyuangong/leetcode/blob/master/python/198_House_Robber.py
Number of Islandshttps://leetcode.com/problems/number-of-islands/
Pythonhttps://github.com/qiyuangong/leetcode/blob/master/python/200_Number_of_Islands.py
Count Primeshttps://leetcode.com/problems/count-primes/
Pythonhttps://github.com/qiyuangong/leetcode/blob/master/python/204_Count_Primes.py
Javahttps://github.com/qiyuangong/leetcode/blob/master/java/204_Count_Primes.java
CPPhttps://github.com/qiyuangong/leetcode/blob/master/cpp/204_Count_Primes.cpp
Sieve of Eratostheneshttps://en.wikipedia.org/wiki/Sieve_of_Eratosthenes#Algorithm_complexity
Reverse Linked Listhttps://leetcode.com/problems/reverse-linked-list/
Pythonhttps://github.com/qiyuangong/leetcode/blob/master/python/206_Reverse_Linked_List.py
Javahttps://github.com/qiyuangong/leetcode/blob/master/java/206_Reverse_Linked_List.java
CPPhttps://github.com/qiyuangong/leetcode/blob/master/cpp/206_Reverse_Linked_List.cpp
House Robber IIhttps://leetcode.com/problems/house-robber-ii/
Pythonhttps://github.com/qiyuangong/leetcode/blob/master/python/213_House_Robber_II.py
Kth Largest Element in an Arrayhttps://leetcode.com/problems/kth-largest-element-in-an-array/
Pythonhttps://github.com/qiyuangong/leetcode/blob/master/python/215_Kth_Largest_Element_in_an_Array.py
Javahttps://github.com/qiyuangong/leetcode/blob/master/java/215_Kth_Largest_Element_in_an_Array.java
Combination Sum IIIhttps://leetcode.com/problems/combination-sum-iii/
Pythonhttps://github.com/qiyuangong/leetcode/blob/master/python/216_Combination_Sum_III.py
Contains Duplicatehttps://leetcode.com/problems/contains-duplicate/
Pythonhttps://github.com/qiyuangong/leetcode/blob/master/python/217_Contains_Duplicate.py
Contains Duplicate IIhttps://leetcode.com/problems/contains-duplicate-ii/
Pythonhttps://github.com/qiyuangong/leetcode/blob/master/python/219_Contains_Duplicate_II.py
Contains Duplicate IIIhttps://leetcode.com/problems/contains-duplicate-iii/
Pythonhttps://github.com/qiyuangong/leetcode/blob/master/python/220_Contains_Duplicate_III.py
Maximal Squarehttps://leetcode.com/problems/maximal-square/
Pythonhttps://github.com/qiyuangong/leetcode/blob/master/python/221_Maximal_Square.py
Rectangle Areahttps://leetcode.com/problems/rectangle-area/
Pythonhttps://github.com/qiyuangong/leetcode/blob/master/python/223_Rectangle_Area.py
Javahttps://github.com/qiyuangong/leetcode/blob/master/java/223_Rectangle_Area.java
Summary Rangeshttps://leetcode.com/problems/summary-ranges/
Pythonhttps://github.com/qiyuangong/leetcode/blob/master/python/228_Summary_Ranges.py
Lowest Common Ancestor of a Binary Treehttps://leetcode.com/problems/lowest-common-ancestor-of-a-binary-tree/
Pythonhttps://github.com/qiyuangong/leetcode/blob/master/python/236_Lowest_Common_Ancestor_of_a_Binary_Tree.py
Javahttps://github.com/qiyuangong/leetcode/blob/master/java/236_Lowest_Common_Ancestor_of_a_Binary_Tree.java
Product of Array Except Selfhttps://leetcode.com/problems/product-of-array-except-self/
Pythonhttps://github.com/qiyuangong/leetcode/blob/master/python/238_Product_of_Array_Except_Self.py
Javahttps://github.com/qiyuangong/leetcode/blob/master/java/238_Product_of_Array_Except_Self.java
Shortest Word Distancehttps://leetcode.com/problems/shortest-word-distance/
Pythonhttps://github.com/qiyuangong/leetcode/blob/master/python/243_Shortest_Word_Distance.py
Strobogrammatic Numberhttps://leetcode.com/problems/strobogrammatic-number/
Pythonhttps://github.com/qiyuangong/leetcode/blob/master/python/246_Strobogrammatic_Number.py
Group Shifted Stringshttps://leetcode.com/problems/group-shifted-strings/
Pythonhttps://github.com/qiyuangong/leetcode/blob/master/python/249_Group_Shifted_Strings.py
Meeting Roomshttps://leetcode.com/problems/meeting-rooms/
Pythonhttps://github.com/qiyuangong/leetcode/blob/master/python/252_Meeting_Rooms.py
Meeting Rooms IIhttps://leetcode.com/problems/meeting-rooms-ii/
Pythonhttps://github.com/qiyuangong/leetcode/blob/master/python/253_Meeting_Rooms_II.py
Javahttps://github.com/qiyuangong/leetcode/blob/master/java/253_Meeting_Rooms_II.java
3Sum Smallerhttps://leetcode.com/problems/3sum-smaller/
Pythonhttps://github.com/qiyuangong/leetcode/blob/master/python/259_3Sum_Smaller.py
Palindrome Permutationhttps://leetcode.com/problems/palindrome-permutation/
Pythonhttps://github.com/qiyuangong/leetcode/blob/master/python/266_Palindrome_Permutation.py
Palindrome Permutation IIhttps://leetcode.com/problems/palindrome-permutation-ii/
Pythonhttps://github.com/qiyuangong/leetcode/blob/master/python/267_Palindrome_Permutation_II.py
Permutations IIhttps://leetcode.com/problems/permutations-ii/
Missing Numberhttps://leetcode.com/problems/missing-number/
Pythonhttps://github.com/qiyuangong/leetcode/blob/master/python/268_Missing_Number.py
Javahttps://github.com/qiyuangong/leetcode/blob/master/java/268_Missing_Number.java
Closest Binary Search Tree Valuehttps://leetcode.com/problems/closest-binary-search-tree-value/
Pythonhttps://github.com/qiyuangong/leetcode/blob/master/python/270_Closest_Binary_Search_Tree_Value.py
Integer to English Wordshttps://leetcode.com/problems/integer-to-english-words/
Pythonhttps://github.com/qiyuangong/leetcode/blob/master/python/273_Integer_to_English_Words.py
Javahttps://github.com/qiyuangong/leetcode/blob/master/python/273_Integer_to_English_Words.java
H-Indexhttps://leetcode.com/problems/h-index/
Pythonhttps://github.com/qiyuangong/leetcode/blob/master/python/274_H-Index.py
Backgroundhttps://en.wikipedia.org/wiki/H-index
Paint Fencehttps://leetcode.com/problems/paint-fence/
Pythonhttps://github.com/qiyuangong/leetcode/blob/master/python/276_Paint_Fence.py
Wiggle Sorthttps://leetcode.com/problems/wiggle-sort/
Pythonhttps://github.com/qiyuangong/leetcode/blob/master/python/280_Wiggle_Sort.py
Walls and Gateshttps://leetcode.com/problems/walls-and-gates/
Pythonhttps://github.com/qiyuangong/leetcode/blob/master/python/286_Walls_and_Gates.py
Unique Word Abbreviationhttps://leetcode.com/problems/unique-word-abbreviation/
Pythonhttps://github.com/qiyuangong/leetcode/blob/master/python/288_Unique_Word_Abbreviation.py
Flip Gamehttps://leetcode.com/problems/flip-game/
Pythonhttps://github.com/qiyuangong/leetcode/blob/master/python/293_Flip_Game.py
Flip Game IIhttps://leetcode.com/problems/flip-game-ii/
Pythonhttps://github.com/qiyuangong/leetcode/blob/master/python/294_Flip_Game_II.py
Sprague-Grundy Functionhttps://discuss.leetcode.com/topic/27282/theory-matters-from-backtracking-128ms-to-dp-0ms
Best Meeting Pointhttps://leetcode.com/problems/best-meeting-point/
Pythonhttps://github.com/qiyuangong/leetcode/blob/master/python/296_Best_Meeting_Point.py
Binary Tree Longest Consecutive Sequencehttps://leetcode.com/problems/binary-tree-longest-consecutive-sequence/
Pythonhttps://github.com/qiyuangong/leetcode/blob/master/python/298_Binary_Tree_Longest_Consecutive_Sequence.py
Number of Islands IIhttps://leetcode.com/problems/number-of-islands-ii/
Pythonhttps://github.com/qiyuangong/leetcode/blob/master/python/305_Number_of_Islands_II.py
Coin Changehttps://leetcode.com/problems/coin-change/
Pythonhttps://github.com/qiyuangong/leetcode/blob/master/python/322_Coin_Change.py
Palindrome Pairshttps://leetcode.com/problems/palindrome-pairs/
Pythonhttps://github.com/qiyuangong/leetcode/blob/master/python/336_Palindrome_Pairs.py
Javahttps://github.com/qiyuangong/leetcode/blob/master/java/336_Palindrome_Pairs.java
House Robber IIIhttps://leetcode.com/problems/house-robber-iii/
Pythonhttps://github.com/qiyuangong/leetcode/blob/master/python/337_House_Robber_III.py
Nested List Weight Sumhttps://leetcode.com/problems/nested-list-weight-sum/
Pythonhttps://github.com/qiyuangong/leetcode/blob/master/python/339_Nested_List_Weight_Sum.py
Longest Substring with At Most K Distinct Charactershttps://leetcode.com/problems/longest-substring-with-at-most-k-distinct-characters/
Pythonhttps://github.com/qiyuangong/leetcode/blob/master/python/340_Longest_Substring_with_At_Most_K_Distinct_Characters.py
Moving Average from Data Streamhttps://leetcode.com/problems/moving-average-from-data-stream/
Pythonhttps://github.com/qiyuangong/leetcode/blob/master/python/346_Moving_Average_from_Data_Stream.py
Top K Frequent Elementshttps://leetcode.com/problems/top-k-frequent-elements/
Pythonhttps://github.com/qiyuangong/leetcode/blob/master/python/347_Top_K_Frequent_Elements.py
Javahttps://github.com/qiyuangong/leetcode/blob/master/java/347_Top_K_Frequent_Elements.java
Android Unlock Patternshttps://leetcode.com/problems/android-unlock-patterns/
Pythonhttps://github.com/qiyuangong/leetcode/blob/master/python/351_Android_Unlock_Patterns.py
Logger Rate Limiterhttps://leetcode.com/problems/logger-rate-limiter/
Pythonhttps://github.com/qiyuangong/leetcode/blob/master/python/359_Logger_Rate_Limiter.py
Find Leaves of Binary Treehttps://leetcode.com/problems/find-leaves-of-binary-tree/
Pythonhttps://github.com/qiyuangong/leetcode/blob/master/python/366_Find_Leaves_of_Binary_Tree.py
Valid Perfect Squarehttps://leetcode.com/problems/valid-perfect-square
Pythonhttps://github.com/qiyuangong/leetcode/blob/master/python/367_Valid_Perfect_Square.py
Javahttps://github.com/qiyuangong/leetcode/blob/master/java/367_Valid_Perfect_Square.java
Integer square roothttps://en.wikipedia.org/wiki/Integer_square_root#Using_only_integer_division
Largest Divisible Subsethttps://leetcode.com/problems/largest-divisible-subset/
Pythonhttps://github.com/qiyuangong/leetcode/blob/master/python/368_Largest_Divisible_Subset.py
Plus One Linked Listhttps://leetcode.com/problems/plus-one-linked-list/
Pythonhttps://github.com/qiyuangong/leetcode/blob/master/python/369_Plus_One_Linked_List.py
Range Additionhttps://leetcode.com/problems/range-addition/
Pythonhttps://github.com/qiyuangong/leetcode/blob/master/python/370_Range_Addition.py
Ransom Notehttps://leetcode.com/problems/ransom-note/
Pythonhttps://github.com/qiyuangong/leetcode/blob/master/python/383_Ransom_Note.py
Javahttps://github.com/qiyuangong/leetcode/blob/master/java/383_Ransom_Note.java
Shuffle an Arrayhttps://leetcode.com/problems/shuffle-an-array/
Pythonhttps://github.com/qiyuangong/leetcode/blob/master/python/384_Shuffle_an_Array.py
Fisher–Yates shufflehttps://en.wikipedia.org/wiki/Fisher%E2%80%93Yates_shuffle
First Unique Character in a Stringhttps://leetcode.com/problems/first-unique-character-in-a-string/
Pythonhttps://github.com/qiyuangong/leetcode/blob/master/python/387_First_Unique_Character_in_a_String.py
Javahttps://github.com/qiyuangong/leetcode/blob/master/java/387_First_Unique_Character_in_a_String.java
Longest Absolute File Pathhttps://leetcode.com/problems/longest-absolute-file-path/
Pythonhttps://github.com/qiyuangong/leetcode/blob/master/python/388_Longest_Absolute_File_Path.py
Find the Differencehttps://leetcode.com/problems/find-the-difference/
Pythonhttps://github.com/qiyuangong/leetcode/blob/master/python/389_Find_the_Difference.py
Javahttps://github.com/qiyuangong/leetcode/blob/master/java/389_Find_the_Difference.java
Nth Digithttps://leetcode.com/problems/nth-digit/
Pythonhttps://github.com/qiyuangong/leetcode/blob/master/python/400_Nth_Digit.py
Javahttps://github.com/qiyuangong/leetcode/blob/master/java/400_Nth_Digit.java
Binary Watchhttps://leetcode.com/problems/binary-watch/
Pythonhttps://github.com/qiyuangong/leetcode/blob/master/python/401_Binary_Watch.py
Javahttps://github.com/qiyuangong/leetcode/blob/master/java/401_Binary_Watch.java
Sum of Left Leaveshttps://leetcode.com/problems/sum-of-left-leaves/
Pythonhttps://github.com/qiyuangong/leetcode/blob/master/python/404_Sum_of_Left_Leaves.py
Javahttps://github.com/qiyuangong/leetcode/blob/master/java/404_Sum_of_Left_Leaves.java
Convert a Number to Hexadecimalhttps://leetcode.com/problems/convert-a-number-to-hexadecimal/
Pythonhttps://github.com/qiyuangong/leetcode/blob/master/python/405_Convert_a_Number_to_Hexadecimal.py
Javahttps://github.com/qiyuangong/leetcode/blob/master/java/405_Convert_a_Number_to_Hexadecimal.java
Two's complementhttps://en.wikipedia.org/wiki/Two%27s_complement
Valid Word Abbreviationhttps://leetcode.com/problems/valid-word-abbreviation/
Pythonhttps://github.com/qiyuangong/leetcode/blob/master/python/408_Valid_Word_Abbreviation.py
Longest Palindromehttps://leetcode.com/problems/longest-palindrome/description/
Pythonhttps://github.com/qiyuangong/leetcode/blob/master/python/409_Longest_Palindrome.py
Javahttps://github.com/qiyuangong/leetcode/blob/master/java/409_Longest_Palindrome.java
Fizz Buzzhttps://leetcode.com/problems/fizz-buzz/
Pythonhttps://github.com/qiyuangong/leetcode/blob/master/python/412_Fizz_Buzz.py
Javahttps://github.com/qiyuangong/leetcode/blob/master/java/412_Fizz_Buzz.java
Cpphttps://github.com/qiyuangong/leetcode/blob/master/cpp/412_Fizz_Buzz.cpp
Third Maximum Numberhttps://leetcode.com/problems/third-maximum-number/
Pythonhttps://github.com/qiyuangong/leetcode/blob/master/python/414_Third_Maximum_Number.py
Javahttps://github.com/qiyuangong/leetcode/blob/master/java/414_Third_Maximum_Number.java
Add Stringshttps://leetcode.com/problems/add-strings/
Pythonhttps://github.com/qiyuangong/leetcode/blob/master/python/415_Add_Strings.py
Javahttps://github.com/qiyuangong/leetcode/blob/master/java/415_Add_Strings.java
Partition Equal Subset Sumhttps://leetcode.com/problems/partition-equal-subset-sum/
Pythonhttps://github.com/qiyuangong/leetcode/blob/master/python/416_Partition_Equal_Subset_Sum.py
Maximum XOR of Two Numbers in an Arrayhttps://leetcode.com/problems/maximum-xor-of-two-numbers-in-an-array/
Pythonhttps://github.com/qiyuangong/leetcode/blob/master/python/421_Maximum_XOR_of_Two_Numbers_in_an_Array.py
Valid Word Squarehttps://leetcode.com/problems/valid-word-square/
Pythonhttps://github.com/qiyuangong/leetcode/blob/master/python/422_Valid_Word_Square.py
Number of Segments in a Stringhttps://leetcode.com/problems/number-of-segments-in-a-string/description/
Pythonhttps://github.com/qiyuangong/leetcode/blob/master/python/434_Number_of_Segments_in_a_String.py
Javahttps://github.com/qiyuangong/leetcode/blob/master/java/434_Number_of_Segments_in_a_String.java
Path Sum IIIhttps://leetcode.com/problems/path-sum-iii/
Pythonhttps://github.com/qiyuangong/leetcode/blob/master/python/437_Path_Sum_III.py
Javahttps://github.com/qiyuangong/leetcode/blob/master/java/437_Path_Sum_III.java
Find All Anagrams in a Stringhttps://leetcode.com/problems/find-all-anagrams-in-a-string/
Pythonhttps://github.com/qiyuangong/leetcode/blob/master/python/438_Find_All_Anagrams_in_a_String.py
Javahttps://github.com/qiyuangong/leetcode/blob/master/java/438_Find_All_Anagrams_in_a_String.java
String Compressionhttps://leetcode.com/problems/string-compression/description/
Pythonhttps://github.com/qiyuangong/leetcode/blob/master/python/443_String_Compression.py
Javahttps://github.com/qiyuangong/leetcode/blob/master/java/443_String_Compression.java
Find All Numbers Disappeared in an Arrayhttps://leetcode.com/problems/find-all-numbers-disappeared-in-an-array/
Pythonhttps://github.com/qiyuangong/leetcode/blob/master/python/448_Find_All_Numbers_Disappeared_in_an_Array.py
Javahttps://github.com/qiyuangong/leetcode/blob/master/java/448_Find_All_Numbers_Disappeared_in_an_Array.java
Number of Segments in a Stringhttps://leetcode.com/problems/minimum-moves-to-equal-array-elements/description/
Pythonhttps://github.com/qiyuangong/leetcode/blob/master/python/453_Minimum_Moves_to_Equal_Array_Elements.py
Javahttps://github.com/qiyuangong/leetcode/blob/master/java/453_Minimum_Moves_to_Equal_Array_Elements.java
Poor Pigshttps://leetcode.com/problems/poor-pigs/
Pythonhttps://github.com/qiyuangong/leetcode/blob/master/python/458_Poor_Pigs.py
Javahttps://github.com/qiyuangong/leetcode/blob/master/java/458_Poor_Pigs.java
2 pigs for 5 * 5 metrichttps://leetcode.com/problems/poor-pigs/discuss/94266/Another-explanation-and-solution
Hamming Distancehttps://leetcode.com/problems/hamming-distance/
Pythonhttps://github.com/qiyuangong/leetcode/blob/master/python/461_Hamming_Distance.py
Javahttps://github.com/qiyuangong/leetcode/blob/master/java/461_Hamming_Distance.java
Island Perimeterhttps://leetcode.com/problems/island-perimeter/
Pythonhttps://github.com/qiyuangong/leetcode/blob/master/python/463_Island_Perimeter.py
Javahttps://github.com/qiyuangong/leetcode/blob/master/java/463_Island_Perimeter.java
Heatershttps://leetcode.com/problems/heaters/
Pythonhttps://github.com/qiyuangong/leetcode/blob/master/python/475_Heaters.py
Javahttps://github.com/qiyuangong/leetcode/blob/master/java/475_Heaters.java
Largest Palindrome Producthttps://leetcode.com/problems/largest-palindrome-product/
Pythonhttps://github.com/qiyuangong/leetcode/blob/master/python/479_Largest_Palindrome_Product.py
Javahttps://github.com/qiyuangong/leetcode/blob/master/java/479_Largest_Palindrome_Product.java
Mathhttps://leetcode.com/problems/largest-palindrome-product/discuss/96305/Python-Solution-Using-Math-In-48ms
License Key Formattinghttps://leetcode.com/problems/license-key-formatting/
Pythonhttps://github.com/qiyuangong/leetcode/blob/master/python/482_License_Key_Formatting.py
Javahttps://github.com/qiyuangong/leetcode/blob/master/java/482_License_Key_Formatting.java
Max Consecutive Oneshttps://leetcode.com/problems/max-consecutive-ones/
Pythonhttps://github.com/qiyuangong/leetcode/blob/master/python/485_Max_Consecutive_Ones.py
Javahttps://github.com/qiyuangong/leetcode/blob/master/java/485_Max_Consecutive_Ones.java
Fibonacci Numberhttps://leetcode.com/problems/fibonacci-number/
Pythonhttps://github.com/qiyuangong/leetcode/blob/master/python/509_Fibonacci_Number.py
Javahttps://github.com/qiyuangong/leetcode/blob/master/java/509_Fibonacci_Number.java
Convert BST to Greater Treehttps://leetcode.com/problems/convert-bst-to-greater-tree/description/
Pythonhttps://github.com/qiyuangong/leetcode/blob/master/python/538_Convert_BST_to_Greater_Tree.py
Javahttps://github.com/qiyuangong/leetcode/blob/master/java/538_Convert_BST_to_Greater_Tree.java
Reverse String IIhttps://leetcode.com/problems/reverse-string-ii/solution/
Pythonhttps://github.com/qiyuangong/leetcode/blob/master/python/541_Reverse_String_II.py
Javahttps://github.com/qiyuangong/leetcode/blob/master/java/541_Reverse_String_II.java
Diameter of Binary Treehttps://leetcode.com/problems/diameter-of-binary-tree/description/
Pythonhttps://github.com/qiyuangong/leetcode/blob/master/python/543_Diameter_of_Binary_Tree.py
Javahttps://github.com/qiyuangong/leetcode/blob/master/java/543_Diameter_of_Binary_Tree.java
Friend Circleshttps://leetcode.com/problems/friend-circles/
Pythonhttps://github.com/qiyuangong/leetcode/blob/master/python/547_Friend_Circles.py
Javahttps://github.com/qiyuangong/leetcode/blob/master/java/547_Friend_Circles.java
Reverse Words in a String IIIhttps://leetcode.com/problems/reverse-words-in-a-string-iii/
Pythonhttps://github.com/qiyuangong/leetcode/blob/master/python/557_Reverse_Words_in_a_String_III.py
Javahttps://github.com/qiyuangong/leetcode/blob/master/java/557_Reverse_Words_in_a_String_III.java
Subarray Sum Equals Khttps://leetcode.com/problems/subarray-sum-equals-k/
Pythonhttps://github.com/qiyuangong/leetcode/blob/master/python/560_Subarray_Sum_Equals_K.py
Javahttps://github.com/qiyuangong/leetcode/blob/master/java/560_Subarray_Sum_Equals_K.java
Subtree of Another Treehttps://leetcode.com/problems/subtree-of-another-tree/description/
Pythonhttps://github.com/qiyuangong/leetcode/blob/master/python/572_Subtree_of_Another_Tree.py
Javahttps://github.com/qiyuangong/leetcode/blob/master/java/572_Subtree_of_Another_Tree.java
Shortest Unsorted Continuous Subarrayhttps://leetcode.com/problems/subtree-of-another-tree/description/
Pythonhttps://github.com/qiyuangong/leetcode/blob/master/python/581_Shortest_Unsorted_Continuous_Subarray.py
Javahttps://github.com/qiyuangong/leetcode/blob/master/java/581_Shortest_Unsorted_Continuous_Subarray.java
Can Place Flowershttps://leetcode.com/problems/can-place-flowers/
Pythonhttps://github.com/qiyuangong/leetcode/blob/master/python/605_Can_Place_Flowers.py
Javahttps://github.com/qiyuangong/leetcode/blob/master/java/605_Can_Place_Flowers.java
Merge Two Binary Treeshttps://leetcode.com/problems/merge-two-binary-trees/description/
Pythonhttps://github.com/qiyuangong/leetcode/blob/master/python/617_Merge_Two_Binary_Trees.py
Javahttps://github.com/qiyuangong/leetcode/blob/master/java/617_Merge_Two_Binary_Trees.java
Maximum Product of Three Numbershttps://leetcode.com/problems/maximum-product-of-three-numbers/
Pythonhttps://github.com/qiyuangong/leetcode/blob/master/python/628_Maximum_Product_of_Three_Numbers.py
Javahttps://github.com/qiyuangong/leetcode/blob/master/java/628_Maximum_Product_of_Three_Numbers.java
Maximum Binary Treehttps://leetcode.com/problems/maximum-binary-tree/
Pythonhttps://github.com/qiyuangong/leetcode/blob/master/python/654_Maximum_Binary_Tree.py
Javahttps://github.com/qiyuangong/leetcode/blob/master/java/654_Maximum_Binary_Tree.java
Non-decreasing Arrayhttps://leetcode.com/problems/non-decreasing-array/
Pythonhttps://github.com/qiyuangong/leetcode/blob/master/python/665_Non-decreasing_Array.py
Javahttps://github.com/qiyuangong/leetcode/blob/master/java/665_Non-decreasing_Array.java
Kth Smallest Number in Multiplication Tablehttps://leetcode.com/problems/kth-smallest-number-in-multiplication-table/
Pythonhttps://github.com/qiyuangong/leetcode/blob/master/python/668_Kth_Smallest_Number_in_Multiplication_Table.py
Javahttps://github.com/qiyuangong/leetcode/blob/master/java/668_Kth_Smallest_Number_in_Multiplication_Table.java
Cpphttps://github.com/qiyuangong/leetcode/blob/master/cpp/668_Kth_Smallest_Number_in_Multiplication_Table.cpp
Second Minimum Node In a Binary Treehttps://leetcode.com/problems/second-minimum-node-in-a-binary-tree/
Pythonhttps://github.com/qiyuangong/leetcode/blob/master/python/671_Second_Minimum_Node_In_a_Binary_Tree.py
Javahttps://github.com/qiyuangong/leetcode/blob/master/java/671_Second_Minimum_Node_In_a_Binary_Tree.java
Longest Continuous Increasing Subsequencehttps://leetcode.com/problems/longest-continuous-increasing-subsequence/
Pythonhttps://github.com/qiyuangong/leetcode/blob/master/python/674_Longest_Continuous_Increasing_Subsequence.py
Javahttps://github.com/qiyuangong/leetcode/blob/master/java/674_Longest_Continuous_Increasing_Subsequence.java
Valid Palindrome IIhttps://leetcode.com/problems/valid-palindrome-ii/
Pythonhttps://github.com/qiyuangong/leetcode/blob/master/python/680_Valid_Palindrome_II.py
Javahttps://github.com/qiyuangong/leetcode/blob/master/java/680_Valid_Palindrome_II.java
Top K Frequent Wordshttps://leetcode.com/problems/top-k-frequent-words/
Pythonhttps://github.com/qiyuangong/leetcode/blob/master/python/692_Top_K_Frequent_Words.py
Javahttps://github.com/qiyuangong/leetcode/blob/master/java/692_Top_K_Frequent_Words.java
Max Area of Islandhttps://leetcode.com/problems/max-area-of-island/
Pythonhttps://github.com/qiyuangong/leetcode/blob/master/python/695_Max_Area_of_Island.py
Javahttps://github.com/qiyuangong/leetcode/blob/master/java/695_Max_Area_of_Island.java
Degree of an Arrayhttps://leetcode.com/problems/degree-of-an-array/
Pythonhttps://github.com/qiyuangong/leetcode/blob/master/python/697_Degree_of_an_Array.py
Javahttps://github.com/qiyuangong/leetcode/blob/master/java/697_Degree_of_an_Array.java
Search in a Binary Search Treehttps://leetcode.com/problems/search-in-a-binary-search-tree/
Pythonhttps://github.com/qiyuangong/leetcode/blob/master/python/700_Search_in_a_Binary_Search_Tree.py
Javahttps://github.com/qiyuangong/leetcode/blob/master/java/700_Search_in_a_Binary_Search_Tree.java
Kth Largest Element in a Streamhttps://leetcode.com/problems/kth-largest-element-in-a-stream/
Pythonhttps://github.com/qiyuangong/leetcode/blob/master/python/703_Kth_Largest_Element_in_a_Stream.py
Javahttps://github.com/qiyuangong/leetcode/blob/master/java/703_Kth_Largest_Element_in_a_Stream.java
Design HashMaphttps://leetcode.com/problems/design-hashmap/
Pythonhttps://github.com/qiyuangong/leetcode/blob/master/python/706_Design_HashMap.py
Javahttps://github.com/qiyuangong/leetcode/blob/master/java/706_Design_HashMap.java
To Lower Casehttps://leetcode.com/problems/to-lower-case/
Pythonhttps://github.com/qiyuangong/leetcode/blob/master/python/709_To_Lower_Case.py
Javahttps://github.com/qiyuangong/leetcode/blob/master/java/709_To_Lower_Case.java
Max Stackhttps://leetcode.com/problems/max-stack/
Pythonhttps://github.com/qiyuangong/leetcode/blob/master/python/716_Max_Stack.py
Javahttps://github.com/qiyuangong/leetcode/blob/master/java/716_Max_Stack.java
1-bit and 2-bit Charactershttps://leetcode.com/problems/1-bit-and-2-bit-characters/
Pythonhttps://github.com/qiyuangong/leetcode/blob/master/python/717_1-bit_and_2-bit_Characters.py
Javahttps://github.com/qiyuangong/leetcode/blob/master/java/717_1-bit_and_2-bit_Characters.java
Longest Word in Dictionaryhttps://leetcode.com/problems/longest-word-in-dictionary/
Pythonhttps://github.com/qiyuangong/leetcode/blob/master/python/720_Longest_Word_in_Dictionary.py
Javahttps://github.com/qiyuangong/leetcode/blob/master/java/720_Longest_Word_in_Dictionary.java
Find Pivot Indexhttps://leetcode.com/problems/find-pivot-index/
Pythonhttps://github.com/qiyuangong/leetcode/blob/master/python/724_Find_Pivot_Index.py
Javahttps://github.com/qiyuangong/leetcode/blob/master/java/724_Find_Pivot_Index.java
Self Dividing Numbershttps://leetcode.com/problems/self-dividing-numbers/solution/
Pythonhttps://github.com/qiyuangong/leetcode/blob/master/python/728_Self_Dividing_Numbers.py
Javahttps://github.com/qiyuangong/leetcode/blob/master/java/728_Self_Dividing_Numbers.java
Flood Fillhttps://leetcode.com/problems/flood-fill/
Pythonhttps://github.com/qiyuangong/leetcode/blob/master/python/733_Flood_Fill.py
Javahttps://github.com/qiyuangong/leetcode/blob/master/java/733_Flood_Fill.java
Network Delay Timehttps://leetcode.com/problems/network-delay-time/
Pythonhttps://github.com/qiyuangong/leetcode/blob/master/python/743_Network_Delay_Time.py
Javahttps://github.com/qiyuangong/leetcode/blob/master/java/743_Network_Delay_Time.java
IP to CIDRhttps://leetcode.com/problems/ip-to-cidr/
Pythonhttps://github.com/qiyuangong/leetcode/blob/master/python/751_IP_to_CIDR.py
Javahttps://github.com/qiyuangong/leetcode/blob/master/java/751_IP_to_CIDR.java
Find Anagram Mappingshttps://leetcode.com/problems/find-anagram-mappings/
Pythonhttps://github.com/qiyuangong/leetcode/blob/master/python/760_Find_Anagram_Mappings.py
Javahttps://github.com/qiyuangong/leetcode/blob/master/java/760_Find_Anagram_Mappings.java
Toeplitz Matrixhttps://leetcode.com/problems/toeplitz-matrix/
Pythonhttps://github.com/qiyuangong/leetcode/blob/master/python/766_Toeplitz_Matrix.py
Javahttps://github.com/qiyuangong/leetcode/blob/master/java/766_Toeplitz_Matrix.java
Jewels and Stoneshttps://leetcode.com/problems/jewels-and-stones/description/
Pythonhttps://github.com/qiyuangong/leetcode/blob/master/python/771_Jewels_and_Stones.py
Javahttps://github.com/qiyuangong/leetcode/blob/master/java/771_Jewels_and_Stones.java
Onelinehttps://leetcode.com/problems/jewels-and-stones/discuss/113574/1-liners-PythonJavaRuby
Letter Case Permutationhttps://leetcode.com/problems/letter-case-permutation/
Pythonhttps://github.com/qiyuangong/leetcode/blob/master/python/784_Letter_Case_Permutation.py
Javahttps://github.com/qiyuangong/leetcode/blob/master/java/784_Letter_Case_Permutation.java
Unique Morse Code Wordshttps://leetcode.com/problems/unique-morse-code-words/description/
Pythonhttps://github.com/qiyuangong/leetcode/blob/master/python/804_Unique_Morse_Code_Words.py
Javahttps://github.com/qiyuangong/leetcode/blob/master/java/804_Unique_Morse_Code_Words.java
Subdomain Visit Counthttps://leetcode.com/problems/subdomain-visit-count/
Pythonhttps://github.com/qiyuangong/leetcode/blob/master/python/811_Subdomain_Visit_Count.py
Javahttps://github.com/qiyuangong/leetcode/blob/master/java/811_Subdomain_Visit_Count.java
Most Common Wordhttps://leetcode.com/problems/most-common-word/
Pythonhttps://github.com/qiyuangong/leetcode/blob/master/python/819_Most_Common_Word.py
Javahttps://github.com/qiyuangong/leetcode/blob/master/java/819_Most_Common_Word.java
Flipping an Imagehttps://leetcode.com/problems/flipping-an-image/
Pythonhttps://github.com/qiyuangong/leetcode/blob/master/python/832_Flipping_an_Image.py
Javahttps://github.com/qiyuangong/leetcode/blob/master/java/832_Flipping_an_Image.java
Rectangle Overlaphttps://leetcode.com/problems/rectangle-overlap/
Pythonhttps://github.com/qiyuangong/leetcode/blob/master/python/836_Rectangle_Overlap.py
Javahttps://github.com/qiyuangong/leetcode/blob/master/java/836_Rectangle_Overlap.java
Backspace String Comparehttps://leetcode.com/problems/backspace-string-compare/
Pythonhttps://github.com/qiyuangong/leetcode/blob/master/python/844_Backspace_String_Compare.py
Javahttps://github.com/qiyuangong/leetcode/blob/master/java/844_Backspace_String_Compare.java
Peak Index in a Mountain Arrayhttps://leetcode.com/problems/peak-index-in-a-mountain-array/
Pythonhttps://github.com/qiyuangong/leetcode/blob/master/python/852_Peak_Index_in_a_Mountain_Array.py
Javahttps://github.com/qiyuangong/leetcode/blob/master/java/852_Peak_Index_in_a_Mountain_Array.java
Transpose Matrixhttps://leetcode.com/problems/transpose-matrix/
Pythonhttps://github.com/qiyuangong/leetcode/blob/master/python/867_Transpose_Matrix.py
Javahttps://github.com/qiyuangong/leetcode/blob/master/java/867_Transpose_Matrix.java
Binary Gaphttps://leetcode.com/problems/binary-gap/
Pythonhttps://github.com/qiyuangong/leetcode/blob/master/python/868_Binary_Gap.py
Javahttps://github.com/qiyuangong/leetcode/blob/master/java/868_Binary_Gap.java
Leaf-Similar Treeshttps://leetcode.com/problems/leaf-similar-trees/
Pythonhttps://github.com/qiyuangong/leetcode/blob/master/python/872_Leaf-Similar_Trees.py
Javahttps://github.com/qiyuangong/leetcode/blob/master/java/872_Leaf-Similar_Trees.java
Middle of the Linked Listhttps://leetcode.com/problems/middle-of-the-linked-list/
Pythonhttps://github.com/qiyuangong/leetcode/blob/master/python/876_Middle_of_the_Linked_List.py
Javahttps://github.com/qiyuangong/leetcode/blob/master/java/876_Middle_of_the_Linked_List.java
Fruit Into Basketshttps://leetcode.com/problems/fruit-into-baskets/
Pythonhttps://github.com/qiyuangong/leetcode/blob/master/python/904_Fruit_Into_Baskets.py
Javahttps://github.com/qiyuangong/leetcode/blob/master/java/904_Fruit_Into_Baskets.java
Sort Array By Parityhttps://leetcode.com/problems/sort-array-by-parity/
Pythonhttps://github.com/qiyuangong/leetcode/blob/master/python/905_Sort_Array_By_Parity.py
Javahttps://github.com/qiyuangong/leetcode/blob/master/java/905_Sort_Array_By_Parity.java
Sort Array By Parity IIhttps://leetcode.com/problems/sort-array-by-parity-ii/
Pythonhttps://github.com/qiyuangong/leetcode/blob/master/python/922_Sort_Array_By_Parity_II.py
Javahttps://github.com/qiyuangong/leetcode/blob/master/java/922_Sort_Array_By_Parity_II.java
Unique Email Addresseshttps://leetcode.com/problems/unique-email-addresses/
Pythonhttps://github.com/qiyuangong/leetcode/blob/master/python/929_Unique_Email_Addresses.py
Javahttps://github.com/qiyuangong/leetcode/blob/master/java/929_Unique_Email_Addresses.java
Number of Recent Callshttps://leetcode.com/problems/number-of-recent-calls/
Pythonhttps://github.com/qiyuangong/leetcode/blob/master/python/933_Number_of_Recent_Calls.py
Javahttps://github.com/qiyuangong/leetcode/blob/master/java/933_Number_of_Recent_Calls.java
Reorder Log Fileshttps://leetcode.com/problems/reorder-log-files/
Pythonhttps://github.com/qiyuangong/leetcode/blob/master/python/937_Reorder_Log_Files.py
Javahttps://github.com/qiyuangong/leetcode/blob/master/java/937_Reorder_Log_Files.java
Minimum Increment to Make Array Uniquehttps://leetcode.com/problems/minimum-increment-to-make-array-unique/
Pythonhttps://github.com/qiyuangong/leetcode/blob/master/python/945_Minimum_Increment_to_Make_Array_Unique.py
Javahttps://github.com/qiyuangong/leetcode/blob/master/java/945_Minimum_Increment_to_Make_Array_Unique.java
Validate Stack Sequenceshttps://leetcode.com/problems/validate-stack-sequences/
Pythonhttps://github.com/qiyuangong/leetcode/blob/master/python/946_Validate_Stack_Sequences.py
Javahttps://github.com/qiyuangong/leetcode/blob/master/java/946_Validate_Stack_Sequences.java
Verifying an Alien Dictionaryhttps://leetcode.com/contest/weekly-contest-114/problems/verifying-an-alien-dictionary/
Pythonhttps://github.com/qiyuangong/leetcode/blob/master/python/953_Verifying_an_Alien_Dictionary.py
Javahttps://github.com/qiyuangong/leetcode/blob/master/java/953_Verifying_an_Alien_Dictionary.java
Array of Doubled Pairshttps://leetcode.com/contest/weekly-contest-114/problems/array-of-doubled-pairs/
Pythonhttps://github.com/qiyuangong/leetcode/blob/master/python/954_Array_of_Doubled_Pairs.py
Javahttps://github.com/qiyuangong/leetcode/blob/master/java/954_Array_of_Doubled_Pairs.java
N-Repeated Element in Size 2N Arrayhttps://leetcode.com/problems/n-repeated-element-in-size-2n-array/submissions/
Pythonhttps://github.com/qiyuangong/leetcode/blob/master/python/961_N-Repeated_Element_in_Size_2N_Array.py
Javahttps://github.com/qiyuangong/leetcode/blob/master/java/961_N-Repeated_Element_in_Size_2N_Array.java
Maximum Width Ramphttps://leetcode.com/problems/maximum-width-ramp/
Pythonhttps://github.com/qiyuangong/leetcode/blob/master/python/962_Maximum_Width_Ramp.py
Javahttps://github.com/qiyuangong/leetcode/blob/master/java/962_Maximum_Width_Ramp.java
Squares of a Sorted Arrayhttps://leetcode.com/problems/squares-of-a-sorted-array/
Pythonhttps://github.com/qiyuangong/leetcode/blob/master/python/977_Squares_of_a_Sorted_Array.py
Javahttps://github.com/qiyuangong/leetcode/blob/master/java/977_Squares_of_a_Sorted_Array.java
K Closest Points to Originhttps://leetcode.com/problems/k-closest-points-to-origin/
Pythonhttps://github.com/qiyuangong/leetcode/blob/master/python/973_K_Closest_Points_to_Origin.py
Javahttps://github.com/qiyuangong/leetcode/blob/master/java/973_K_Closest_Points_to_Origin.java
Fixed Pointhttps://leetcode.com/problems/fixed-point/
Pythonhttps://github.com/qiyuangong/leetcode/blob/master/python/1064_Fixed_Point.py
Javahttps://github.com/qiyuangong/leetcode/blob/master/java/1064_Fixed_Point.java
Duplicate Zeroshttps://leetcode.com/problems/duplicate-zeros/
Pythonhttps://github.com/qiyuangong/leetcode/blob/master/python/1089_Duplicate_Zeros.py
Javahttps://github.com/qiyuangong/leetcode/blob/master/java/1089_Duplicate_Zeros.java
Defanging an IP Addresshttps://leetcode.com/problems/defanging-an-ip-address/
Pythonhttps://github.com/qiyuangong/leetcode/blob/master/python/1108_Defanging_an_IP_Address.py
Javahttps://github.com/qiyuangong/leetcode/blob/master/java/1108_Defanging_an_IP_Address.java
Shift 2D Gridhttps://leetcode.com/problems/shift-2d-grid/
Pythonhttps://github.com/qiyuangong/leetcode/blob/master/python/1260_Shift_2D_Grid.py
Javahttps://github.com/qiyuangong/leetcode/blob/master/java/1260_Shift_2D_Grid.java
Convert Binary Number in a Linked List to Integerhttps://leetcode.com/problems/convert-binary-number-in-a-linked-list-to-integer/
Pythonhttps://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 Zerohttps://leetcode.com/problems/find-n-unique-integers-sum-up-to-zero/
Pythonhttps://github.com/qiyuangong/leetcode/blob/master/python/1304_Find_N_Unique_Integers_Sum_up_to_Zero.py
Javahttps://github.com/qiyuangong/leetcode/blob/master/java/1304_Find_N_Unique_Integers_Sum_up_to_Zero.java
XOR Queries of a Subarrayhttps://leetcode.com/problems/xor-queries-of-a-subarray
Pythonhttps://github.com/qiyuangong/leetcode/blob/master/python/1310_XOR_Queries_of_a_Subarray.py
Javahttps://github.com/qiyuangong/leetcode/blob/master/java/1310_XOR_Queries_of_a_Subarray.java
Cpphttps://github.com/qiyuangong/leetcode/blob/master/cpp/1310_XOR_Queries_of_a_Subarray.cpp
Maximum 69 Numberhttps://leetcode.com/problems/maximum-69-number/
Pythonhttps://github.com/qiyuangong/leetcode/blob/master/python/1323_Maximum_69_Number.py
Javahttps://github.com/qiyuangong/leetcode/blob/master/java/1323_Maximum_69_Number.java
The K Weakest Rows in a Matrixhttps://leetcode.com/problems/the-k-weakest-rows-in-a-matrix/
Pythonhttps://github.com/qiyuangong/leetcode/blob/master/python/1337_The_K_Weakest_Rows_in_a_Matrix.py
Javahttps://github.com/qiyuangong/leetcode/blob/master/java/1337_The_K_Weakest_Rows_in_a_Matrix.java
Number of Steps to Reduce a Number to Zerohttps://leetcode.com/problems/number-of-steps-to-reduce-a-number-to-zero/
Pythonhttps://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 Numberhttps://leetcode.com/problems/how-many-numbers-are-smaller-than-the-current-number/
Pythonhttps://github.com/qiyuangong/leetcode/blob/master/python/1365_How_Many_Numbers_Are_Smaller_Than_the_Current_Number.py
Javahttps://github.com/qiyuangong/leetcode/blob/master/java/1365_How_Many_Numbers_Are_Smaller_Than_the_Current_Number.java
Running Sum of 1d Arrayhttps://leetcode.com/problems/running-sum-of-1d-array/
Pythonhttps://github.com/qiyuangong/leetcode/blob/master/python/1480_Running_Sum_of_1d_Array.py
Javahttps://github.com/qiyuangong/leetcode/blob/master/java/1480_Running_Sum_of_1d_Array.java
Median of Two Sorted Arrayshttps://leetcode.com/problems/median-of-two-sorted-arrays/
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