文件列表:

0001-two-sum (0, 2019-07-30)
0001-two-sum\0001_two_sum.go (331, 2019-07-30)
0002-add-two-numbers (0, 2019-07-30)
0002-add-two-numbers\0002_add_two_numbers.go (698, 2019-07-30)
0004-median-of-two-sorted-arrays (0, 2019-07-30)
0004-median-of-two-sorted-arrays\0004_median_of_two_sorted_arrays.go (766, 2019-07-30)
0005-longest-palindromic-substring (0, 2019-07-30)
0005-longest-palindromic-substring\0005_longest_palindromic_substring.go (765, 2019-07-30)
0007-reverse-integer (0, 2019-07-30)
0007-reverse-integer\0007_reverse_integer.go (421, 2019-07-30)
0009-palindrome-number (0, 2019-07-30)
0009-palindrome-number\0009_palindrome_number.go (287, 2019-07-30)
0013-roman-to-integer (0, 2019-07-30)
0013-roman-to-integer\0013_roman_to_integer.go (876, 2019-07-30)
0014-longest-common-prefix (0, 2019-07-30)
0014-longest-common-prefix\0014_longest_common_prefix.go (579, 2019-07-30)
0020-valid-parentheses (0, 2019-07-30)
0020-valid-parentheses\0020_valid_parentheses.go (528, 2019-07-30)
0021-merge-two-sorted-lists (0, 2019-07-30)
0021-merge-two-sorted-lists\0021_merge_two_sorted_lists.go (826, 2019-07-30)
0024-swap-nodes-in-pairs (0, 2019-07-30)
0024-swap-nodes-in-pairs\0024_swap_nodes_in_pairs.go (561, 2019-07-30)
0026-remove-duplicates-from-sorted-array (0, 2019-07-30)
0026-remove-duplicates-from-sorted-array\0026_remove_duplicates_from_sorted_array.go (594, 2019-07-30)
0027-remove-element (0, 2019-07-30)
0027-remove-element\0027_remove_element.go (328, 2019-07-30)
0028-implement-strstr (0, 2019-07-30)
0028-implement-strstr\0028_implement_strstr.go (517, 2019-07-30)
0038-count-and-say (0, 2019-07-30)
0038-count-and-say\0038_count_and_say.go (591, 2019-07-30)
0053-maximum-subarray (0, 2019-07-30)
0053-maximum-subarray\0053_maximum_subarray.go (346, 2019-07-30)
0058-length-of-last-word (0, 2019-07-30)
0058-length-of-last-word\0058_length_of_last_word.go (464, 2019-07-30)
0066-plus-one (0, 2019-07-30)
0066-plus-one\0066_plus_one.go (624, 2019-07-30)
0067-add-binary (0, 2019-07-30)
0067-add-binary\0067_add_binary.go (701, 2019-07-30)
... ...

# LeetCode Solutions in Golang My LeetCode Practice Features: * Written in `Go` * Thoughts are included in comments Aims: * Algorithm * Data Structure * Golang ## Solution Overview    ## Solution #|Name|Difficulty|Tags -:|----|----------|---- 1|[Two Sum](https://leetcode.com/problems/two-sum) [[Solution](./0001-two-sum/0001_two_sum.go)]|Easy|`Array` `Hash Table` 2|[Add Two Numbers](https://leetcode.com/problems/add-two-numbers) [[Solution](./0002-add-two-numbers/0002_add_two_numbers.go)]|Medium|`Linked List` `Math` 4|[Median of Two Sorted Arrays](https://leetcode.com/problems/median-of-two-sorted-arrays) [[Solution](./0004-median-of-two-sorted-arrays/0004_median_of_two_sorted_arrays.go)]|Hard|`Array` `Binary Search` `Divide and Conquer` 5|[Longest Palindromic Substring](https://leetcode.com/problems/longest-palindromic-substring) [[Solution](./0005-longest-palindromic-substring/0005_longest_palindromic_substring.go)]|Medium|`String` `Dynamic Programming` 7|[Reverse Integer](https://leetcode.com/problems/reverse-integer) [[Solution](./0007-reverse-integer/0007_reverse_integer.go)]|Easy|`Math` 9|[Palindrome Number](https://leetcode.com/problems/palindrome-number) [[Solution](./0009-palindrome-number/0009_palindrome_number.go)]|Easy|`Math` 13|[Roman to Integer](https://leetcode.com/problems/roman-to-integer) [[Solution](./0013-roman-to-integer/0013_roman_to_integer.go)]|Easy|`Math` `String` 14|[Longest Common Prefix](https://leetcode.com/problems/longest-common-prefix) [[Solution](./0014-longest-common-prefix/0014_longest_common_prefix.go)]|Easy|`String` 20|[Valid Parentheses](https://leetcode.com/problems/valid-parentheses) [[Solution](./0020-valid-parentheses/0020_valid_parentheses.go)]|Easy|`String` `Stack` 21|[Merge Two Sorted Lists](https://leetcode.com/problems/merge-two-sorted-lists) [[Solution](./0021-merge-two-sorted-lists/0021_merge_two_sorted_lists.go)]|Easy|`Linked List` 24|[Swap Nodes in Pairs](https://leetcode.com/problems/swap-nodes-in-pairs) [[Solution](./0024-swap-nodes-in-pairs/0024_swap_nodes_in_pairs.go)]|Medium|`Linked List` 26|[Remove Duplicates from Sorted Array](https://leetcode.com/problems/remove-duplicates-from-sorted-array) [[Solution](./0026-remove-duplicates-from-sorted-array/0026_remove_duplicates_from_sorted_array.go)]|Easy|`Array` `Two Pointers` 27|[Remove Element](https://leetcode.com/problems/remove-element) [[Solution](./0027-remove-element/0027_remove_element.go)]|Easy|`Array` `Two Pointers` 28|[Implement strStr()](https://leetcode.com/problems/implement-strstr) [[Solution](./0028-implement-strstr/0028_implement_strstr.go)]|Easy|`Two Pointers` `String` 38|[Count and Say](https://leetcode.com/problems/count-and-say) [[Solution](./0038-count-and-say/0038_count_and_say.go)]|Easy|`String` 53|[Maximum Subarray](https://leetcode.com/problems/maximum-subarray) [[Solution](./0053-maximum-subarray/0053_maximum_subarray.go)]|Easy|`Array` `Divide and Conquer` `Dynamic Programming` 58|[Length of Last Word](https://leetcode.com/problems/length-of-last-word) [[Solution](./0058-length-of-last-word/0058_length_of_last_word.go)]|Easy|`String` 66|[Plus One](https://leetcode.com/problems/plus-one) [[Solution](./0066-plus-one/0066_plus_one.go)]|Easy|`Array` 67|[Add Binary](https://leetcode.com/problems/add-binary) [[Solution](./0067-add-binary/0067_add_binary.go)]|Easy|`Math` `String` 70|[Climbing Stairs](https://leetcode.com/problems/climbing-stairs) [[Solution](./0070-climbing-stairs/0070_climbing_stairs.go)]|Easy|`Dynamic Programming` 71|[Simplify Path](https://leetcode.com/problems/simplify-path) [[Solution](./0071-simplify-path/0071_simplify_path.go)]|Medium|`String` `Stack` 83|[Remove Duplicates from Sorted List](https://leetcode.com/problems/remove-duplicates-from-sorted-list) [[Solution](./0083-remove-duplicates-from-sorted-list/0083_remove_duplicates_from_sorted_list.go)]|Easy|`Linked List` 88|[Merge Sorted Array](https://leetcode.com/problems/merge-sorted-array) [[Solution](./0088-merge-sorted-array/0088_merge_sorted_array.go)]|Easy|`Array` `Two Pointers` 94|[Binary Tree Inorder Traversal](https://leetcode.com/problems/binary-tree-inorder-traversal) [[Solution](./0094-binary-tree-inorder-traversal/0094_binary_tree_inorder_traversal.go)]|Medium|`Hash Table` `Stack` `Tree` 96|[Unique Binary Search Trees](https://leetcode.com/problems/unique-binary-search-trees) [[Solution](./0096-unique-binary-search-trees/0096_unique_binary_search_trees.go)]|Medium|`Dynamic Programming` `Tree` 100|[Same Tree](https://leetcode.com/problems/same-tree) [[Solution](./0100-same-tree/0100_same_tree.go)]|Easy|`Tree` `Depth-first Search` 101|[Symmetric Tree](https://leetcode.com/problems/symmetric-tree) [[Solution](./0101-symmetric-tree/0101_symmetric_tree.go)]|Easy|`Tree` `Depth-first Search` `Breadth-first Search` 102|[Binary Tree Level Order Traversal](https://leetcode.com/problems/binary-tree-level-order-traversal) [[Solution](./0102-binary-tree-level-order-traversal/0102_binary_tree_level_order_traversal.go)]|Medium|`Tree` `Breadth-first Search` 103|[Binary Tree Zigzag Level Order Traversal](https://leetcode.com/problems/binary-tree-zigzag-level-order-traversal) [[Solution](./0103-binary-tree-zigzag-level-order-traversal/0103_binary_tree_zigzag_level_order_traversal.go)]|Medium|`Stack` `Tree` `Breadth-first Search` 104|[Maximum Depth of Binary Tree](https://leetcode.com/problems/maximum-depth-of-binary-tree) [[Solution](./0104-maximum-depth-of-binary-tree/0104_maximum_depth_of_binary_tree.go)]|Easy|`Tree` `Depth-first Search` 105|[Construct Binary Tree from Preorder and Inorder Traversal](https://leetcode.com/problems/construct-binary-tree-from-preorder-and-inorder-traversal) [[Solution](./0105-construct-binary-tree-from-preorder-and-inorder-traversal/0105_construct_binary_tree_from_preorder_and_inorder_traversal.go)]|Medium|`Array` `Tree` `Depth-first Search` 106|[Construct Binary Tree from Inorder and Postorder Traversal](https://leetcode.com/problems/construct-binary-tree-from-inorder-and-postorder-traversal) [[Solution](./0106-construct-binary-tree-from-inorder-and-postorder-traversal/0106_construct_binary_tree_from_inorder_and_postorder_traversal.go)]|Medium|`Array` `Tree` `Depth-first Search` 107|[Binary Tree Level Order Traversal II](https://leetcode.com/problems/binary-tree-level-order-traversal-ii) [[Solution](./0107-binary-tree-level-order-traversal-ii/0107_binary_tree_level_order_traversal_ii.go)]|Easy|`Tree` `Breadth-first Search` 108|[Convert Sorted Array to Binary Search Tree](https://leetcode.com/problems/convert-sorted-array-to-binary-search-tree) [[Solution](./0108-convert-sorted-array-to-binary-search-tree/0108_convert_sorted_array_to_binary_search_tree.go)]|Easy|`Tree` `Depth-first Search` 109|[Convert Sorted List to Binary Search Tree](https://leetcode.com/problems/convert-sorted-list-to-binary-search-tree) [[Solution](./0109-convert-sorted-list-to-binary-search-tree/0109_convert_sorted_list_to_binary_search_tree.go)]|Medium|`Linked List` `Depth-first Search` 110|[Balanced Binary Tree](https://leetcode.com/problems/balanced-binary-tree) [[Solution](./0110-balanced-binary-tree/0110_balanced_binary_tree.go)]|Easy|`Tree` `Depth-first Search` 111|[Minimum Depth of Binary Tree](https://leetcode.com/problems/minimum-depth-of-binary-tree) [[Solution](./0111-minimum-depth-of-binary-tree/0111_minimum_depth_of_binary_tree.go)]|Easy|`Tree` `Depth-first Search` `Breadth-first Search` 112|[Path Sum](https://leetcode.com/problems/path-sum) [[Solution](./0112-path-sum/0112_path_sum.go)]|Easy|`Tree` `Depth-first Search` 113|[Path Sum II](https://leetcode.com/problems/path-sum-ii) [[Solution](./0113-path-sum-ii/0113_path_sum_ii.go)]|Medium|`Tree` `Depth-first Search` 114|[Flatten Binary Tree to Linked List](https://leetcode.com/problems/flatten-binary-tree-to-linked-list) [[Solution](./0114-flatten-binary-tree-to-linked-list/0114_flatten_binary_tree_to_linked_list.go)]|Medium|`Tree` `Depth-first Search` 116|[Populating Next Right Pointers in Each Node](https://leetcode.com/problems/populating-next-right-pointers-in-each-node) [[Solution](./0116-populating-next-right-pointers-in-each-node/0116_populating_next_right_pointers_in_each_node.py)]|Medium|`Tree` `Depth-first Search` 117|[Populating Next Right Pointers in Each Node II](https://leetcode.com/problems/populating-next-right-pointers-in-each-node-ii) [[Solution](./0117-populating-next-right-pointers-in-each-node-ii/0117_populating_next_right_pointers_in_each_node_ii.py)]|Medium|`Tree` `Depth-first Search` 118|[Pascal's Triangle](https://leetcode.com/problems/pascals-triangle) [[Solution](./0118-pascals-triangle/0118_pascals_triangle.go)]|Easy|`Array` 121|[Best Time to Buy and Sell Stock](https://leetcode.com/problems/best-time-to-buy-and-sell-stock) [[Solution](./0121-best-time-to-buy-and-sell-stock/0121_best_time_to_buy_and_sell_stock.go)]|Easy|`Array` `Dynamic Programming` 122|[Best Time to Buy and Sell Stock II](https://leetcode.com/problems/best-time-to-buy-and-sell-stock-ii) [[Solution](./0122-best-time-to-buy-and-sell-stock-ii/0122_best_time_to_buy_and_sell_stock_ii.go)]|Easy|`Array` `Greedy` 125|[Valid Palindrome](https://leetcode.com/problems/valid-palindrome) [[Solution](./0125-valid-palindrome/0125_valid_palindrome.go)]|Easy|`Two Pointers` `String` 129|[Sum Root to Leaf Numbers](https://leetcode.com/problems/sum-root-to-leaf-numbers) [[Solution](./0129-sum-root-to-leaf-numbers/0129_sum_root_to_leaf_numbers.go)]|Medium|`Tree` `Depth-first Search` 136|[Single Number](https://leetcode.com/problems/single-number) [[Solution](./0136-single-number/0136_single_number.go)]|Easy|`Hash Table` `Bit Manipulation` 141|[Linked List Cycle](https://leetcode.com/problems/linked-list-cycle) [[Solution](./0141-linked-list-cycle/0141_linked_list_cycle.go)]|Easy|`Linked List` `Two Pointers` 144|[Binary Tree Preorder Traversal](https://leetcode.com/problems/binary-tree-preorder-traversal) [[Solution](./0144-binary-tree-preorder-traversal/0144_binary_tree_preorder_traversal.go)]|Medium|`Stack` `Tree` 145|[Binary Tree Postorder Traversal](https://leetcode.com/problems/binary-tree-postorder-traversal) [[Solution](./0145-binary-tree-postorder-traversal/0145_binary_tree_postorder_traversal.go)]|Hard|`Stack` `Tree` 146|[LRU Cache](https://leetcode.com/problems/lru-cache) [[Solution](./0146-lru-cache/0146_lru_cache.go)]|Medium|`Design` 155|[Min Stack](https://leetcode.com/problems/min-stack) [[Solution](./0155-min-stack/0155_min_stack.go)]|Easy|`Stack` `Design` 175|[Combine Two Tables](https://leetcode.com/problems/combine-two-tables) [[Solution](./0175-combine-two-tables/0175_combine_two_tables.sql)]|Easy| 176|[Second Highest Salary](https://leetcode.com/problems/second-highest-salary) [[Solution](./0176-second-highest-salary/0176_second_highest_salary.sql)]|Easy| 177|[Nth Highest Salary](https://leetcode.com/problems/nth-highest-salary) [[Solution](./0177-nth-highest-salary/0177_nth_highest_salary.sql)]|Medium| 181|[Employees Earning More Than Their Managers](https://leetcode.com/problems/employees-earning-more-than-their-managers) [[Solution](./0181-employees-earning-more-than-their-managers/0181_employees_earning_more_than_their_managers.sql)]|Easy| 182|[Duplicate Emails](https://leetcode.com/problems/duplicate-emails) [[Solution](./0182-duplicate-emails/0182_duplicate_emails.sql)]|Easy| 183|[Customers Who Never Order](https://leetcode.com/problems/customers-who-never-order) [[Solution](./0183-customers-who-never-order/0183_customers_who_never_order.sql)]|Easy| 184|[Department Highest Salary](https://leetcode.com/problems/department-highest-salary) [[Solution](./0184-department-highest-salary/0184_department_highest_salary.sql)]|Medium| 189|[Rotate Array](https://leetcode.com/problems/rotate-array) [[Solution](./0189-rotate-array/0189_rotate_array.go)]|Easy|`Array` 197|[Rising Temperature](https://leetcode.com/problems/rising-temperature) [[Solution](./0197-rising-temperature/0197_rising_temperature.sql)]|Easy| 199|[Binary Tree Right Side View](https://leetcode.com/problems/binary-tree-right-side-view) [[Solution](./0199-binary-tree-right-side-view/0199_binary_tree_right_side_view.go)]|Medium|`Tree` `Depth-first Search` `Breadth-first Search` 203|[Remove Linked List Elements](https://leetcode.com/problems/remove-linked-list-elements) [[Solution](./0203-remove-linked-list-elements/0203_remove_linked_list_elements.go)]|Easy|`Linked List` 206|[Reverse Linked List](https://leetcode.com/problems/reverse-linked-list) [[Solution](./0206-reverse-linked-list/0206_reverse_linked_list.go)]|Easy|`Linked List` 225|[Implement Stack using Queues](https://leetcode.com/problems/implement-stack-using-queues) [[Solution](./0225-implement-stack-using-queues/0225_implement_stack_using_queues.go)]|Easy|`Stack` `Design` 226|[Invert Binary Tree](https://leetcode.com/problems/invert-binary-tree) [[Solution](./0226-invert-binary-tree/0226_invert_binary_tree.go)]|Easy|`Tree` 232|[Implement Queue using Stacks](https://leetcode.com/problems/implement-queue-using-stacks) [[Solution](./0232-implement-queue-using-stacks/0232_implement_queue_using_stacks.go)]|Easy|`Stack` `Design` 234|[Palindrome Linked List](https://leetcode.com/problems/palindrome-linked-list) [[Solution](./0234-palindrome-linked-list/0234_palindrome_linked_list.go)]|Easy|`Linked List` `Two Pointers` 235|[Lowest Common Ancestor of a Binary Search Tree](https://leetcode.com/problems/lowest-common-ancestor-of-a-binary-search-tree) [[Solution](./0235-lowest-common-ancestor-of-a-binary-search-tree/0235_lowest_common_ancestor_of_a_binary_search_tree.go)]|Easy|`Tree` 237|[Delete Node in a Linked List](https://leetcode.com/problems/delete-node-in-a-linked-list) [[Solution](./0237-delete-node-in-a-linked-list/0237_delete_node_in_a_linked_list.go)]|Easy|`Linked List` 257|[Binary Tree Paths](https://leetcode.com/problems/binary-tree-paths) [[Solution](./0257-binary-tree-paths/0257_binary_tree_paths.go)]|Easy|`Tree` `Depth-first Search` 262|[Trips and Users](https://leetcode.com/problems/trips-and-users) [[Solution](./0262-trips-and-users/0262_trips_and_users.sql)]|Hard| 283|[Move Zeroes](https://leetcode.com/problems/move-zeroes) [[Solution](./0283-move-zeroes/0283_move_zeroes.go)]|Easy|`Array` `Two Pointers` 342|[Power of Four](https://leetcode.com/problems/power-of-four) [[Solution](./0342-power-of-four/0342_power_of_four.go)]|Easy|`Bit Manipulation` 388|[Longest Absolute File Path](https://leetcode.com/problems/longest-absolute-file-path) [[Solution](./0388-longest-absolute-file-path/0388_longest_absolute_file_path.go)]|Medium| 404|[Sum of Left Leaves](https://leetcode.com/problems/sum-of-left-leaves) [[Solution](./0404-sum-of-left-leaves/0404_sum_of_left_leaves.go)]|Easy|`Tree` 429|[N-ary Tree Level Order Traversal](https://leetcode.com/problems/n-ary-tree-level-order-traversal) [[Solution](./0429-n-ary-tree-level-order-traversal/0429_n_ary_tree_level_order_traversal.py)]|Easy|`Tree` `Breadth-first Search` 445|[Add Two Numbers II](https://leetcode.com/problems/add-two-numbers-ii) [[Solution](./0445-add-two-numbers-ii/0445_add_two_numbers_ii.go)]|Medium|`Linked List` 449|[Serialize and Deserialize BST](https://leetcode.com/problems/serialize-and-deserialize-bst) [[Solution](./0449-serialize-and-deserialize-bst/0449_serialize_and_deserialize_bst.py)]|Medium|`Tree` 461|[Hamming Distance](https://leetcode.com/problems/hamming-distance) [[Solution](./0461-hamming-distance/0461_hamming_distance.go)]|Easy|`Bit Manipulation` 496|[Next Greater Element I](https://leetcode.com/problems/next-greater-element-i) [[Solution](./0496-next-greater-element-i/0496_next_greater_element_i.go)]|Easy|`Stack` 513|[Find Bottom Left Tree Value](https://leetcode.com/problems/find-bottom-left-tree-value) [[Solution](./0513-find-bottom-left-tree-value/0513_find_bottom_left_tree_value.go)]|Medium|`Tree` `Depth-first Search` `Breadth-first Search` 515|[Find Largest Value in Each Tree Row](https://leetcode.com/problems/find-largest-value-in-each-tree-row) [[Solution](./0515-find-largest-value-in-each-tree-row/0515_find_largest_value_in_each_tree_row.go)]|Medium|`Tree` `Depth-first Search` `Breadth-first Search` 530|[Minimum Absolute Difference in BST](https://leetcode.com/problems/minimum-absolute-difference-in-bst) [[Solution](./0530-minimum-absolute-difference-in-bst/0530_minimum_absolute_difference_in_bst.go)]|Easy|`Tree` 538|[Convert BST to Greater Tree](https://leetcode.com/problems/convert-bst-to-greater-tree) [[Solution](./0538-convert-bst-to-greater-tree/0538_convert_bst_to_greater_tree.go)]|Easy|`Tree` 543|[Diameter of Binary Tree](https://leetcode.com/problems/diameter-of-binary-tree) [[Solution](./0543-diameter-of-binary-tree/0543_diameter_of_binary_tree.go)]|Easy|`Tree` 557|[Reverse Words in a String III](https://leetcode.com/problems/reverse-words-in-a-string-iii) [[Solution](./0557-reverse-words-in-a-string-iii/0557_reverse_words_in_a_string_iii.go)]|Easy|`String` 559|[Maximum Depth of N-ary Tree](https://leetcode.com/problems/maximum-depth-of-n-ary-tree) [[Solution](./0559-maximum-depth-of-n-ary-tree/0559_maximum_depth_of_n_ary_tree.py)]|Easy|`Tree` `Depth-first Search` `Breadth-first Search` 561|[Array Partition I](https://leetcode.com/problems/array-partition-i) [[Solution](./0561-array-partition-i/0561_array_partition_i.go)]|Easy|`Array` 563|[Binary Tree Tilt](https://leetcode.com/problems/binary-tree-tilt) [[Solution](./0563-binary-tree-tilt/0563_binary_tree_tilt.go)]|Easy|`Tree` 572|[Subtree of Another Tree](https://leetcode.com/problems/subtree-of-another-tree) [[Solution](./0572-subtree-of-another-tree/0572_subtree_of_another_tree.go)]|Easy|`Tree` 589|[N-ary Tree Preorder Traversal](https://leetcode.com/problems/n-ary-tree-preorder-traversal) [[Solution](./0589-n-ary-tree-preorder-traversal/0589_n_ary_tree_preorder_traversal.py)]|Easy|`Tree` 590|[N-ary Tree Postorder Traversal](https://leetcode.com/problems/n-ary-tree-postorder-traversal) [[Solution](./0590-n-ary-tree-postorder-traversal/0590_n_ary_tree_postorder_traversal.py)]|Easy|`Tree` 595|[Big Countries](https://leetcode.com/problems/big-countries) [[Solution](./0595-big-countries/0595_big_countries.sql)]|Easy| 596|[Classes More Than 5 Students](https://leetcode.com/problems/classes-more-than-5-students) [[Solution](./0596-classes-more-than-5-students/0596_classes_more_than_5_students.sql)]|Easy| 606|[Construct String from Binary Tree](https://leetcode.com/problems/construct-string-from-binary-tree) [[Solution](./0606-construct-string-from-binary-tree/0606_construct_string_from_binary_tree.go)]|Easy|`String` `Tree` 617|[Merge Two Binary Trees](https://leetcode.com/problems/merge-two-binary-trees) [[Solution](./0617-merge-two-binary-trees/0617_merge_two_binary_trees.go)]|Easy|`Tree` 620|[Not Boring Movies](https://leetcode.com/problems/not-boring-movies) [[Solution](./0620-not-boring-movies/0620_not_boring_movies.sql)]|Easy| 623|[Add One Row to Tree](https://leetcode.com/problems/add-one-row-to-tree) [[Solution](./0623-add-one-row-to-tree/0623_add_one_row_to_tree.go)]|Medium|`Tree` 626|[Exchange Seats](https://leetcode.com/problems/exchange-seats) [[Solution](./0626-exchange-seats/0626_exchange_seats.sql)]|Medium| 627|[Swap Salary](https://leetcode.com/problems/swap-salary) [[Solution](./0627-swap-salary/0627_swap_salary.sql)]|Easy| 637|[Average of Levels in Binary Tree](https://leetcode.com/problems/average-of-levels-in-binary-tree) [[Solution](./0637-average-of-levels-in-binary-tree/0637_average_of_levels_in_binary_tree.go)]|Easy|`Tree` ... ...

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