├── .gitignore ├── 3sum └── solution.py ├── 3sum_closest └── solution.py ├── 4sum └── solution.py ├── LICENSE ├── README ├── add_binary ├── solution.py ├── solution2.py └── solution3.py ├── add_digits └── solution.py ├── add_two_numbers ├── solution.py └── solution2.py ├── anagrams └── solution.py ├── balanced_binary_tree ├── solution.py └── solution2.py ├── best_time_to_buy_and_sell_stock └── solution.py ├── best_time_to_buy_and_sell_stock_ii └── solution.py ├── best_time_to_buy_and_sell_stock_iii └── solution.py ├── binary_search_tree_iterator └── solution.py ├── binary_tree_inorder_traversal └── solution.py ├── binary_tree_level_order_traversal ├── solution.py └── solution2.py ├── binary_tree_level_order_traversal_ii └── solution.py ├── binary_tree_maximum_path_sum └── solution.py ├── binary_tree_paths └── solution.py ├── binary_tree_postorder_traversal └── solution.py ├── binary_tree_preorder_traversal └── solution.py ├── binary_tree_zigzag_level_order_traversal └── solution.py ├── bitwise_and_of_numbers_range └── solution.py ├── climbing_stairs ├── solution.py └── solution2.py ├── clone_graph ├── solution.py ├── solution2.py └── solution3.py ├── combination_sum └── solution.py ├── combination_sum_ii ├── solution.py └── solution2.py ├── combinations └── solution.py ├── construct_binary_tree_from_inorder_and_postorder_traversal └── solution.py ├── construct_binary_tree_from_preorder_and_inorder_traversal └── solution.py ├── container_with_most_water └── solution.py ├── contains_duplicate └── solution.py ├── contains_duplicate_ii └── solution.py ├── convert_sorted_array_to_binary_search_tree └── solution.py ├── convert_sorted_list_to_binary_search_tree └── solution.py ├── copy_list_with_random_pointer └── solution.py ├── count_and_say └── solution.py ├── count_primes ├── solution.py └── solution2.py ├── course_schedule ├── solution.py ├── solution2.py └── test.txt ├── delete_node_in_a_linked_list └── solution.py ├── different_ways_to_add_parentheses └── solution.py ├── distinct_subsequences ├── solution.py └── solution2.py ├── edit_distance └── solution.py ├── excel_sheet_column_number └── solution.py ├── factorial_trailing_zeroes └── solution.py ├── find_minimum_in_rotated_sorted_array └── solution.py ├── find_minimum_in_rotated_sorted_array_ii └── solution.py ├── find_peak_element └── solution.py ├── first_bad_version └── solution.py ├── first_missing_positive └── solution.py ├── flatten_binary_tree_to_linked_list └── solution.py ├── gas_station └── solution.py ├── generate_parentheses ├── solution.py └── solution2.py ├── gray_code └── solution.py ├── group_anagrams └── solution.py ├── h_index └── solution.py ├── happy_number └── solution.py ├── house_robber └── solution.py ├── house_robber_ii └── solution.py ├── implement_queue_using_stacks └── solution.py ├── implement_stack_using_queues ├── solution.py └── solution2.py ├── implement_strstr ├── solution.py └── solution2.py ├── insertion_sort_list └── solution.py ├── invert_binary_tree └── solution.py ├── isomorphic_strings └── solution.py ├── jump_game ├── solution.py └── solution2.py ├── jump_game_ii ├── solution.py ├── solution2.py └── solution3.py ├── kth_largest_element_in_an_array ├── solution.py └── solution2.py ├── largest_rectangle_in_histogram └── solution.py ├── length_of_last_word ├── solution.py ├── solution2.py └── solution3.py ├── letter_combinations_of_a_phone_number ├── solution.py ├── solution2.py └── solution3.py ├── linked_list_cycle └── solution.py ├── linked_list_cycle_ii └── solution.py ├── longest_common_prefix └── solution.py ├── longest_consecutive_sequence └── solution.py ├── longest_palindromic_substring └── solution.py ├── longest_substring_without_repeating_characters └── solution.py ├── lowest_common_ancestor_of_a_binary_search_tree └── solution.py ├── lowest_common_ancestor_of_a_binary_tree └── solution.py ├── lru_cache ├── solution.py └── solution2.py ├── majority_element ├── solution.py └── solution2.py ├── majority_element_ii └── solution.py ├── makedir.sh ├── maximal_rectangle └── solution.py ├── maximum_depth_of_binary_tree └── solution.py ├── maximum_subarray ├── solution.py ├── solution2.py └── solution3.py ├── merge_intervals └── solution.py ├── merge_k_sorted_lists └── solution.py ├── merge_sorted_array ├── solution.py └── solution2.py ├── merge_two_sorted_lists ├── solution.py └── solution2.py ├── minimum_depth_of_binary_tree ├── solution.py └── solution2.py ├── minimum_path_sum ├── solution.py └── solution2.py ├── minimum_window_substring └── solution.py ├── missing_number ├── solution.py └── solution2.py ├── move_zeroes └── solution.py ├── multiply_strings └── solution.py ├── n-queens └── solution.py ├── n-queens_ii └── solution.py ├── next_permutation └── solution.py ├── number_of_1_bits └── solution.py ├── number_of_islands └── solution.py ├── palindrome_linked_list └── solution.py ├── palindrome_number └── solution.py ├── palindrome_partitioning └── solution.py ├── partition_list └── solution.py ├── pascals_triangle └── solution.py ├── pascals_triangle_ii └── solution.py ├── path_sum └── solution.py ├── path_sum_ii └── solution.py ├── permutations └── solution.py ├── permutations_ii ├── solution.py └── solution2.py ├── plus_one ├── solution.py ├── solution2.py └── solution3.py ├── populating_next_right_pointers_in_each_node └── solution.py ├── populating_next_right_pointers_in_each_node_ii └── solution.py ├── pow(x,_n) ├── solution.py ├── solution2.py └── solution3.py ├── power_of_two └── solution.py ├── product_of_array_except_self ├── solution.py ├── solution2.py ├── solution3.py └── solution4.py ├── recover_binary_search_tree └── solution.py ├── regular_expression_matching └── solution.py ├── remove_duplicates_from_sorted_array └── solution.py ├── remove_duplicates_from_sorted_array_ii └── solution.py ├── remove_duplicates_from_sorted_list └── solution.py ├── remove_duplicates_from_sorted_list_ii ├── solution.py └── solution2.py ├── remove_element └── solution.py ├── remove_linked_list_elements └── solution.py ├── remove_nth_node_from_end_of_list ├── solution.py └── solution2.py ├── restore_ip_addresses └── solution.py ├── reverse_bits └── solution.py ├── reverse_integer └── solution.py ├── reverse_linked_list ├── solution.py └── solution2.py ├── reverse_linked_list_ii └── solution.py ├── reverse_nodes_in_k-group └── solution.py ├── reverse_words_in_a_string └── solution.py ├── roman_to_integer └── solution.py ├── rotate_array └── solution.py ├── rotate_image └── solution.py ├── rotate_list └── solution.py ├── same_tree └── solution.py ├── search_a_2d_matrix └── solution.py ├── search_a_2d_matrix_ii └── solution.py ├── search_for_a_range ├── solution.py └── solution2.py ├── search_in_rotated_sorted_array ├── solution.py └── solution2.py ├── search_in_rotated_sorted_array_ii ├── solution.py └── solution2.py ├── search_insert_position ├── solution.py └── solution2.py ├── set_matrix_zeroes └── solution.py ├── setup.cfg ├── simplify_path └── solution.py ├── single_number └── solution.py ├── single_number_ii ├── solution.py └── solution2.py ├── sort_colors └── solution.py ├── sort_list └── solution.py ├── spiral_matrix_ii └── solution.py ├── sqrt(x) └── solution.py ├── subsets ├── solution.py ├── solution2.py ├── solution3.py └── solution4.py ├── subsets_ii ├── solution.py └── solution2.py ├── sum_root_to_leaf_numbers └── solution.py ├── summary_ranges └── solution.py ├── surrounded_regions └── solution.py ├── swap_nodes_in_pairs ├── solution.py └── solution2.py ├── symmetric_tree └── solution.py ├── trapping_rain_water ├── solution.py └── solution2.py ├── triangle ├── solution.py └── solution2.py ├── two_sum └── solution.py ├── ugly_number └── solution.py ├── unique_binary_search_trees ├── solution.py └── solution2.py ├── unique_binary_search_trees_ii └── solution.py ├── unique_paths └── solution.py ├── unique_paths_ii ├── solution.py └── solution2.py ├── valid_anagram └── solution.py ├── valid_palindrome └── solution.py ├── valid_parentheses └── solution.py ├── valid_sudoku └── solution.py ├── validate_binary_search_tree ├── solution.py ├── solution2.py └── solution3.py ├── word_break ├── solution.py └── solution2.py ├── word_break_ii ├── solution.py └── solution2.py └── word_ladder ├── solution.py └── solution2.py /.gitignore: -------------------------------------------------------------------------------- 1 | *.py[cod] 2 | .DS_Store 3 | *.swp 4 | -------------------------------------------------------------------------------- /3sum/solution.py: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/shichao-an/leetcode-python/HEAD/3sum/solution.py -------------------------------------------------------------------------------- /3sum_closest/solution.py: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/shichao-an/leetcode-python/HEAD/3sum_closest/solution.py 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