gitextract_pg3fa3pn/

├── .editorconfig
├── .gitignore
├── .travis.yml
├── README.md
├── bin/
│   ├── test_javascript.js
│   └── test_python.py
├── codewars/
│   ├── delete_occurrences_of_an_element_if_it_occurs_more_than_n_times.js
│   ├── double_cola.js
│   ├── iq_test.js
│   ├── is_a_number_prime.js
│   ├── multiply.js
│   ├── rectangle_into_squares.js
│   ├── reverse_words.js
│   ├── simple_encryption_1_alternating_split.js
│   ├── sudoku_solution_validator.js
│   ├── take_a_ten_minute_walk.js
│   ├── tribonacci_sequence.js
│   ├── unique_in_order.js
│   └── who_likes_it.js
├── leetcode/
│   ├── 101_symmetric_tree.py
│   ├── 105_construct_binary_tree_from_preorder_and_inorder_traversal.py
│   ├── 108_convert_sorted_array_to_binary_search_tree.py
│   ├── 112_path_sum.py
│   ├── 113_path_sum_ii.py
│   ├── 116_populating_next_right_pointers_in_each_node.py
│   ├── 117_populating_next_right_pointers_in_each_node_ii.py
│   ├── 118_pascal_s_triangle.py
│   ├── 11_container_with_most_water.py
│   ├── 124_binary_tree_maximum_path_sum.py
│   ├── 134_gas_station.py
│   ├── 136_single_number.py
│   ├── 149_max_points_on_a_line.py
│   ├── 14_longest_common_prefix.py
│   ├── 150_evaluate_reverse_polish_notation.py
│   ├── 157_read_n_characters_given_read4.py
│   ├── 160_intersection_of_two_linked_lists.py
│   ├── 165_compare_version_numbers.py
│   ├── 166_fraction_to_recurring_decimal.py
│   ├── 169_majority_element.py
│   ├── 171_excel_sheet_column_number.py
│   ├── 172_factorial_trailing_zeroes.py
│   ├── 174_dungeon_game.py
│   ├── 179_largest_number.py
│   ├── 17_letter_combinations_of_a_phone_number.py
│   ├── 190_reverse_bits.py
│   ├── 191_number_of_1_bits.py
│   ├── 19_remove_nth_node_from_end_of_list.py
│   ├── 202_happy_number.py
│   ├── 204_count_primes.py
│   ├── 208_implement_trie_prefix_tree.py
│   ├── 20_valid_parentheses.py
│   ├── 215_kth_largest_element_in_an_array.py
│   ├── 217_contains_duplicate.py
│   ├── 218_the_skyline_problem.py
│   ├── 224_basic_calculator.py
│   ├── 227_basic_calculator_ii.py
│   ├── 229_majority_element_ii.py
│   ├── 22_generate_parentheses.py
│   ├── 230_kth_smallest_element_in_a_bst.py
│   ├── 234_palindrome_linked_list.py
│   ├── 235_lowest_common_ancestor_of_a_binary_search_tree.py
│   ├── 236_lowest_common_ancestor_of_a_binary_tree.py
│   ├── 237_delete_node_in_a_linked_list.py
│   ├── 242_valid_anagram.py
│   ├── 269_alien_dictionary.py
│   ├── 277_find_the_celebrity.py
│   ├── 280_wiggle_sort.py
│   ├── 282_expression_add_operators.py
│   ├── 285_inorder_successor_in_bst.py
│   ├── 288_unique_word_abbreviation.py
│   ├── 289_game_of_life.py
│   ├── 295_find_median_from_data_stream.py
│   ├── 299_bulls_and_cows.py
│   ├── 303_range_sum_query_immutable.py
│   ├── 304_range_sum_query_2d_immutable.py
│   ├── 307_range_sum_query_mutable.py
│   ├── 308_range_sum_query_2d_mutable.py
│   ├── 30_substring_with_concatenation_of_all_words.py
│   ├── 315_count_of_smaller_numbers_after_self.py
│   ├── 323_number_of_connected_components_in_an_undirected_graph.py
│   ├── 324_wiggle_sort_ii.py
│   ├── 326_power_of_three.py
│   ├── 329_longest_increasing_path_in_a_matrix.py
│   ├── 334_increasing_triplet_subsequence.py
│   ├── 33_search_in_rotated_sorted_array.py
│   ├── 340_longest_substring_with_at_most_k_distinct_characters.py
│   ├── 344_reverse_string.py
│   ├── 347_top_k_frequent_elements.py
│   ├── 348_design_tic_tac_toe.py
│   ├── 353_design_snake_game.py
│   ├── 36_valid_sudoku.py
│   ├── 377_combination_sum_iv.py
│   ├── 378_kth_smallest_element_in_a_sorted_matrix.py
│   ├── 37_sudoku_solver.py
│   ├── 380_insert_delete_getrandom_o1.py
│   ├── 381_insert_delete_getrandom_o1_duplicates_allowed.py
│   ├── 382_linked_list_random_node.py
│   ├── 384_shuffle_an_array.py
│   ├── 386_lexicographical_numbers.py
│   ├── 387_first_unique_character_in_a_string.py
│   ├── 388_longest_absolute_file_path.py
│   ├── 389_find_the_difference.py
│   ├── 38_count_and_say.py
│   ├── 390_elimination_game.py
│   ├── 391_perfect_rectangle.py
│   ├── 395_longest_substring_with_at_least_k_repeating_characters.py
│   ├── 398_random_pick_index.py
│   ├── 399_evaluate_division.py
│   ├── 406_queue_reconstruction_by_height.py
│   ├── 416_partition_equal_subset_sum.py
│   ├── 417_pacific_atlantic_water_flow.py
│   ├── 41_first_missing_positive.py
│   ├── 437_path_sum_iii.py
│   ├── 454_4sum_ii.py
│   ├── 461_hamming_distance.py
│   ├── 480_sliding_window_median.py
│   ├── 486_predict_the_winner.py
│   ├── 48_rotate_image.py
│   ├── 490_the_maze.py
│   ├── 494_target_sum.py
│   ├── 499_the_maze_iii.py
│   ├── 505_the_maze_ii.py
│   ├── 518_coin_change_2.py
│   ├── 51_n_queens.py
│   ├── 524_longest_word_in_dictionary_through_deleting.py
│   ├── 52_n_queens_ii.py
│   ├── 530_minimum_absolute_difference_in_bst.py
│   ├── 542_01_matrix.py
│   ├── 54_spiral_matrix.py
│   ├── 592_fraction_addition_and_subtraction.py
│   ├── 593_valid_square.py
│   ├── 59_spiral_matrix_ii.py
│   ├── 5_longest_palindromic_substring.py
│   ├── 616_add_bold_tag_in_string.py
│   ├── 643_maximum_average_subarray_i.py
│   ├── 66_plus_one.py
│   ├── 676_implement_magic_dictionary.py
│   ├── 679_24_game.py
│   ├── 681_next_closest_time.py
│   ├── 682_baseball_game.py
│   ├── 683_k_empty_slots.py
│   ├── 684_redundant_connection.py
│   ├── 685_redundant_connection_ii.py
│   ├── 688_knight_probability_in_chessboard.py
│   ├── 689_maximum_sum_of_3_non_overlapping_subarrays.py
│   ├── 697_degree_of_an_array.py
│   ├── 719_find_k_th_smallest_pair_distance.py
│   ├── 721_accounts_merge.py
│   ├── 734_sentence_similarity.py
│   ├── 737_sentence_similarity_ii.py
│   ├── 744_find_smallest_letter_greater_than_target.py
│   ├── 746_min_cost_climbing_stairs.py
│   ├── 747_largest_number_at_least_twice_of_others.py
│   ├── 748_shortest_completing_word.py
│   ├── 749_contain_virus.py
│   ├── 750_number_of_corner_rectangles.py
│   ├── 758_bold_words_in_string.py
│   ├── 769_max_chunks_to_make_sorted.py
│   ├── 776_split_bst.py
│   ├── 777_swap_adjacent_in_lr_string.py
│   ├── 778_swim_in_rising_water.py
│   ├── 779_k_th_symbol_in_grammar.py
│   ├── 783_minimum_distance_between_bst_nodes.py
│   ├── 784_letter_case_permutation.py
│   ├── 785_is_graph_bipartite.py
│   ├── 786_k_th_smallest_prime_fraction.py
│   ├── 787_cheapest_flights_within_k_stops.py
│   ├── 788_rotated_digits.py
│   ├── 789_escape_the_ghosts.py
│   ├── 790_domino_and_tromino_tiling.py
│   ├── 791_custom_sort_string.py
│   ├── 7_reverse_integer.py
│   ├── 81_search_in_rotated_sorted_array_ii.py
│   └── 8_string_to_integer_atoi.py
├── lintcode/
│   ├── 102_linked_list_cycle.py
│   ├── 103_linked_list_cycle_ii.py
│   ├── 104_merge_k_sorted_lists.py
│   ├── 105_copy_list_with_random_pointer.py
│   ├── 107_word_break.py
│   ├── 108_palindrome_partitioning_ii.py
│   ├── 109_triangle.py
│   ├── 10_string_permutation_ii.py
│   ├── 110_minimum_path_sum.py
│   ├── 111_climbing_stairs.py
│   ├── 114_unique_paths.py
│   ├── 115_unique_paths_ii.py
│   ├── 116_jump_game.py
│   ├── 117_jump_game_ii.py
│   ├── 118_distinct_subsequences.py
│   ├── 119_edit_distance.py
│   ├── 11_search_range_in_binary_search_tree.py
│   ├── 120_word_ladder.py
│   ├── 121_word_ladder_ii.py
│   ├── 122_largest_rectangle_in_histogram.py
│   ├── 123_word_search.py
│   ├── 124_longest_consecutive_sequence.py
│   ├── 125_backpack_ii.py
│   ├── 126_max_tree.py
│   ├── 127_topological_sorting.py
│   ├── 128_hash_function.py
│   ├── 129_rehashing.py
│   ├── 12_min_stack.py
│   ├── 130_heapify.py
│   ├── 131_building_outline.py
│   ├── 132_word_search_ii.py
│   ├── 134_lru_cache.py
│   ├── 135_combination_sum.py
│   ├── 1365_minimum_cycle_section.py
│   ├── 1366_directed_graph_loop.py
│   ├── 1367_police_distance.py
│   ├── 1368_same_number.py
│   ├── 136_palindrome_partitioning.py
│   ├── 137_clone_graph.py
│   ├── 138_subarray_sum.py
│   ├── 139_subarray_sum_closest.py
│   ├── 13_strstr.py
│   ├── 141_sqrtx.py
│   ├── 142_o1_check_power_of_2.py
│   ├── 143_sort_colors_ii.py
│   ├── 148_sort_colors.py
│   ├── 149_best_time_to_buy_and_sell_stock.py
│   ├── 14_first_position_of_target.py
│   ├── 150_best_time_to_buy_and_sell_stock_ii.py
│   ├── 151_best_time_to_buy_and_sell_stock_iii.py
│   ├── 153_combination_sum_ii.py
│   ├── 154_regular_expression_matching.py
│   ├── 155_minimum_depth_of_binary_tree.py
│   ├── 156_merge_intervals.py
│   ├── 158_two_strings_are_anagrams.py
│   ├── 159_find_minimum_in_rotated_sorted_array.py
│   ├── 15_permutations.py
│   ├── 160_find_minimum_in_rotated_sorted_array_ii.py
│   ├── 165_merge_two_sorted_lists.py
│   ├── 167_add_two_numbers.py
│   ├── 168_burst_balloons.py
│   ├── 16_permutations_ii.py
│   ├── 171_anagrams.py
│   ├── 175_invert_binary_tree.py
│   ├── 178_graph_valid_tree.py
│   ├── 17_subsets.py
│   ├── 183_wood_cut.py
│   ├── 18_subsets_ii.py
│   ├── 190_next_permutation_ii.py
│   ├── 191_maximum_product_subarray.py
│   ├── 192_wildcard_matching.py
│   ├── 196_find_the_missing_number.py
│   ├── 197_permutation_index.py
│   ├── 198_permutation_index_ii.py
│   ├── 1_a_b_problem.py
│   ├── 204_singleton.py
│   ├── 211_string_permutation.py
│   ├── 215_rate_limiter.py
│   ├── 221_add_two_numbers_ii.py
│   ├── 231_typeahead.py
│   ├── 232_tiny_url.py
│   ├── 234_webpage_crawler.py
│   ├── 236_swap_bits.py
│   ├── 242_convert_binary_tree_to_linked_lists_by_depth.py
│   ├── 243_amicable_pair
│   ├── 245_subtree.py
│   ├── 246_binary_tree_path_sum_ii.py
│   ├── 24_lfu_cache.py
│   ├── 254_drop_eggs.py
│   ├── 272_climbing_stairs_ii.py
│   ├── 28_search_a_2d_matrix.py
│   ├── 29_interleaving_string.py
│   ├── 30_insert_interval.py
│   ├── 31_partition_array.py
│   ├── 32_minimum_window_substring.py
│   ├── 35_reverse_linked_list.py
│   ├── 360_sliding_window_median.py
│   ├── 362_sliding_window_maximum.py
│   ├── 363_trapping_rain_water.py
│   ├── 364_trapping_rain_water_ii.py
│   ├── 368_expression_evaluation.py
│   ├── 36_reverse_linked_list_ii.py
│   ├── 376_binary_tree_path_sum.py
│   ├── 378_convert_binary_search_tree_to_doubly_linked_list.py
│   ├── 382_triangle_count.py
│   ├── 384_longest_substring_without_repeating_characters.py
│   ├── 386_longest_substring_with_at_most_k_distinct_characters.py
│   ├── 38_search_a_2d_matrix_ii.py
│   ├── 390_find_peak_element_ii.py
│   ├── 391_number_of_airplanes_in_the_sky.py
│   ├── 392_house_robber.py
│   ├── 393_best_time_to_buy_and_sell_stock_iv.py
│   ├── 394_coins_in_a_line.py
│   ├── 395_coins_in_a_line_ii.py
│   ├── 396_coins_in_a_line_iii.py
│   ├── 397_longest_increasing_continuous_subsequence.py
│   ├── 3_digit_counts.py
│   ├── 401_kth_smallest_number_in_sorted_matrix.py
│   ├── 402_continuous_subarray_sum.py
│   ├── 406_minimum_size_subarray_sum.py
│   ├── 40_implement_queue_by_two_stacks.py
│   ├── 414_divide_two_integers.py
│   ├── 415_valid_palindrome.py
│   ├── 417_valid_number.py
│   ├── 418_integer_to_roman.py
│   ├── 419_roman_to_integer.py
│   ├── 41_maximum_subarray.py
│   ├── 42_maximum_subarray_ii.py
│   ├── 430_scramble_string.py
│   ├── 431_connected_component_in_undirected_graph.py
│   ├── 432_find_the_weak_connected_component_in_the_directed_graph.py
│   ├── 433_number_of_islands.py
│   ├── 434_number_of_islands_ii.py
│   ├── 437_copy_books.py
│   ├── 43_maximum_subarray_iii.py
│   ├── 440_backpack_iii.py
│   ├── 442_implement_trie.py
│   ├── 443_two_sum_greater_than_target.py
│   ├── 447_search_in_a_big_sorted_array.py
│   ├── 450_reverse_nodes_in_k_group.py
│   ├── 453_flatten_binary_tree_to_linked_list.py
│   ├── 457_classical_binary_search.py
│   ├── 458_last_position_of_target.py
│   ├── 459_closest_number_in_sorted_array.py
│   ├── 45_maximum_subarray_difference.py
│   ├── 460_k_closest_numbers_in_sorted_array.py
│   ├── 461_kth_smallest_numbers_in_unsorted_array.py
│   ├── 462_total_occurrence_of_target.py
│   ├── 465_kth_smallest_sum_in_two_sorted_arrays.py
│   ├── 469_identical_binary_tree.py
│   ├── 471_top_k_frequent_words.py
│   ├── 472_binary_tree_path_sum_iii.py
│   ├── 473_add_and_search_word.py
│   ├── 474_lowest_common_ancestor_ii.py
│   ├── 475_binary_tree_maximum_path_sum_ii.py
│   ├── 479_second_max_of_array.py
│   ├── 480_binary_tree_paths.py
│   ├── 486_merge_k_sorted_arrays.py
│   ├── 494_implement_stack_by_two_queues.py
│   ├── 496_toy_factory.py
│   ├── 497_shape_factory.py
│   ├── 498_parking_lot.py
│   ├── 499_word_count.py
│   ├── 4_ugly_number_ii.py
│   ├── 500_inverted_index.py
│   ├── 501_mini_twitter.py
│   ├── 502_mini_cassandra.py
│   ├── 503_anagram_map_reduce.py
│   ├── 504_inverted_index_map_reduce.py
│   ├── 505_web_logger.py
│   ├── 509_mini_yelp.py
│   ├── 510_maximal_rectangle.py
│   ├── 512_decode_ways.py
│   ├── 513_perfect_squares.py
│   ├── 515_paint_house.py
│   ├── 516_paint_house_ii.py
│   ├── 517_ugly_number.py
│   ├── 518_super_ugly_number.py
│   ├── 519_consistent_hashing.py
│   ├── 51_previous_permutation.py
│   ├── 520_consistent_hashing_ii.py
│   ├── 521_remove_duplicate_numbers_in_array.py
│   ├── 522_tiny_url_ii.py
│   ├── 523_url_parser.py
│   ├── 525_mini_uber.py
│   ├── 526_load_balancer.py
│   ├── 527_trie_serialization.py
│   ├── 528_flatten_nested_list_iterator.py
│   ├── 529_geohash.py
│   ├── 52_next_permutation.py
│   ├── 530_geohash_ii.py
│   ├── 531_six_degrees.py
│   ├── 532_reverse_pairs.py
│   ├── 533_two_sum_closest_to_target.py
│   ├── 534_house_robber_ii.py
│   ├── 538_memcache.py
│   ├── 539_move_zeroes.py
│   ├── 53_reverse_words_in_a_string.py
│   ├── 540_zigzag_iterator.py
│   ├── 541_zigzag_iterator_ii.py
│   ├── 543_kth_largest_in_n_arrays.py
│   ├── 544_top_k_largest_numbers.py
│   ├── 545_top_k_largest_numbers_ii.py
│   ├── 547_intersection_of_two_arrays.py
│   ├── 548_intersection_of_two_arrays_ii.py
│   ├── 54_string_to_integer_ii.py
│   ├── 551_nested_list_weight_sum.py
│   ├── 552_create_maximum_number.py
│   ├── 553_bomb_enemy.py
│   ├── 555_counting_bloom_filter.py
│   ├── 556_standard_bloom_filter.py
│   ├── 559_trie_service.py
│   ├── 560_friendship_service.py
│   ├── 563_backpack_v.py
│   ├── 564_backpack_vi.py
│   ├── 565_heart_beat.py
│   ├── 566_gfs_client.py
│   ├── 56_two_sum.py
│   ├── 573_build_post_office_ii.py
│   ├── 574_build_post_office.py
│   ├── 575_expression_expand.py
│   ├── 578_lowest_common_ancestor_iii.py
│   ├── 57_3sum.py
│   ├── 582_word_break_ii.py
│   ├── 584_drop_eggs_ii.py
│   ├── 585_maximum_number_in_mountain_sequence.py
│   ├── 586_sqrtx_ii.py
│   ├── 587_two_sum_unique_pairs.py
│   ├── 589_connecting_graph.py
│   ├── 58_4sum.py
│   ├── 590_connecting_graph_ii.py
│   ├── 591_connecting_graph_iii.py
│   ├── 594_strstr_ii.py
│   ├── 595_binary_tree_longest_consecutive_sequence.py
│   ├── 596_minimum_subtree.py
│   ├── 597_subtree_with_maximum_average.py
│   ├── 598_zombie_in_matrix.py
│   ├── 599_insert_into_a_cyclic_sorted_list.py
│   ├── 59_3sum_closest.py
│   ├── 5_kth_largest_element.py
│   ├── 600_smallest_rectangle_enclosing_black_pixels.py
│   ├── 601_flatten_2d_vector.py
│   ├── 602_russian_doll_envelopes.py
│   ├── 603_largest_divisible_subset.py
│   ├── 604_window_sum.py
│   ├── 605_sequence_reconstruction.py
│   ├── 606_kth_largest_element_ii.py
│   ├── 607_two_sum_data_structure_design.py
│   ├── 608_two_sum_input_array_is_sorted.py
│   ├── 609_two_sum_less_than_or_equal_to_target.py
│   ├── 610_two_sum_difference_equals_to_target.py
│   ├── 611_knight_shortest_path.py
│   ├── 612_k_closest_points.py
│   ├── 613_high_five.py
│   ├── 614_binary_tree_longest_consecutive_sequence_ii.py
│   ├── 615_course_schedule.py
│   ├── 616_course_schedule_ii.py
│   ├── 617_maximum_average_subarray.py
│   ├── 618_search_graph_nodes.py
│   ├── 619_binary_tree_longest_consecutive_sequence_iii.py
│   ├── 61_search_for_a_range.py
│   ├── 620_maximum_subarray_iv.py
│   ├── 621_maximum_subarray_v.py
│   ├── 622_frog_jump.py
│   ├── 623_k_edit_distance.py
│   ├── 624_remove_substrings.py
│   ├── 625_partition_array_ii.py
│   ├── 630_knight_shortest_path_ii.py
│   ├── 633_find_the_duplicate_number.py
│   ├── 634_word_squares.py
│   ├── 635_boggle_game.py
│   ├── 636_132_pattern.py
│   ├── 646_first_position_unique_character.py
│   ├── 647_substring_anagrams.py
│   ├── 64_merge_sorted_array.py
│   ├── 654_sparse_matrix_multiplication.py
│   ├── 655_big_integer_addition.py
│   ├── 656_big_integer_multiplication.py
│   ├── 65_median_of_two_sorted_arrays.py
│   ├── 662_guess_number_game.py
│   ├── 664_counting_bits.py
│   ├── 667_longest_palindromic_subsequence.py
│   ├── 668_ones_and_zeroes.py
│   ├── 669_coin_change.py
│   ├── 66_binary_tree_preorder_traversal.py
│   ├── 676_decode_ways_ii.py
│   ├── 67_binary_tree_inorder_traversal.py
│   ├── 689_two_sum_bst_edtion.py
│   ├── 68_binary_tree_postorder_traversal.py
│   ├── 69_binary_tree_level_order_traversal.py
│   ├── 6_merge_two_sorted_arrays.py
│   ├── 70_binary_tree_level_order_traversal_ii.py
│   ├── 717_tree_longest_path_with_same_value.py
│   ├── 718_repeat_string.py
│   ├── 71_binary_tree_zigzag_level_order_traversal.py
│   ├── 724_minimum_partition.py
│   ├── 725_boolean_parenthesization.py
│   ├── 729_last_digit_by_factorial_divide.py
│   ├── 745_palindromic_ranges.py
│   ├── 74_first_bad_version.py
│   ├── 752_rogue_knight_sven.py
│   ├── 75_find_peak_element.py
│   ├── 76_longest_increasing_subsequence.py
│   ├── 772_group_anagrams.py
│   ├── 775_palindrome_pairs.py
│   ├── 776_strobogrammatic_number_ii.py
│   ├── 77_longest_common_subsequence.py
│   ├── 784_the_longest_common_prefix_ii.py
│   ├── 790_parser.py
│   ├── 791_merge_number.py
│   ├── 792_kth_prime_number.py
│   ├── 793_intersection_of_arrays.py
│   ├── 7_binary_tree_serialization.py
│   ├── 813_find_anagram_mappings.py
│   ├── 81_data_stream_median.py
│   ├── 823_input_stream.py
│   ├── 824_single_number_iv.py
│   ├── 826_computer_maintenance.py
│   ├── 830_string_sort.py
│   ├── 831_3sum_ii.py
│   ├── 832_count_negative_number.py
│   ├── 833_process_sequence.py
│   ├── 85_insert_node_in_a_binary_search_tree.py
│   ├── 86_binary_search_tree_iterator.py
│   ├── 87_remove_node_in_binary_search_tree.py
│   ├── 88_lowest_common_ancestor.py
│   ├── 89_k_sum.py
│   ├── 8_rotate_string.py
│   ├── 900_closest_binary_search_tree_value.py
│   ├── 901_closest_binary_search_tree_value_ii.py
│   ├── 919_meeting_rooms_ii.py
│   ├── 920_meeting_rooms.py
│   ├── 92_backpack.py
│   ├── 93_balanced_binary_tree.py
│   ├── 95_validate_binary_search_tree.py
│   ├── 96_partition_list.py
│   ├── 97_maximum_depth_of_binary_tree.py
│   ├── 98_sort_list.py
│   └── 9_fizz_buzz.py
├── other/
│   ├── anti_queue_reconstruction_by_height.py
│   ├── binary_tree_maximum_path_product.py
│   ├── candy_crush.py
│   ├── card_shuffler.py
│   ├── deep_fetch.js
│   ├── deep_fetch.test.js
│   ├── find_treasure_in_maze.py
│   ├── find_ways_in_board_game.py
│   ├── freq_iterator.py
│   ├── gcd_and_lcm.py
│   ├── get_most_popular_word.py
│   ├── guess_secret.py
│   ├── inorder_non_threaded_binary_tree_traversal.py
│   ├── is_valid_relation.py
│   ├── merge_mail.py
│   ├── reservation.py
│   ├── robot_cleaner.py
│   ├── snake_and_ladder_problem.py
│   ├── stock_stream.py
│   ├── string_abbreviation.py
│   ├── the_point_inside_polygon.py
│   ├── uneven_random_get.py
│   ├── unique_paths_with_followups.py
│   ├── unique_word_abbreviation_ii.py
│   └── upside_down_numbers.py
├── pramp/
│   ├── array_index_and_element_equality.py
│   ├── array_of_array_products.py
│   ├── award_budget_cuts.py
│   ├── bracket_match.py
│   ├── busiest_time_in_the_mall.py
│   ├── decrypt_message.py
│   ├── deletion_distance.py
│   ├── drone_flight_planner.py
│   ├── find_the_duplicates.py
│   ├── flatten_a_dictionary.py
│   ├── h_tree_construction.py
│   ├── k_messed_array_sort.py
│   ├── largest_smaller_bst_node.py
│   ├── number_of_paths.py
│   ├── pairs_with_specific_difference.py
│   ├── pancake_sort.py
│   ├── root_of_number.py
│   ├── sales_path.py
│   ├── sentence_reverse.py
│   ├── smallest_substring_of_all_characters.py
│   ├── time_planner.py
│   └── word_count_engine.py
└── topic/
    ├── README.md
    ├── _test/
    │   └── python/
    │       ├── __init__.py
    │       └── test_base.py
    ├── balanced_search_tree/
    │   └── python/
    │       ├── __init__.py
    │       ├── _helper.py
    │       └── red_black_tree.py
    ├── bit_manipulation/
    │   ├── README.md
    │   └── python/
    │       ├── __init__.py
    │       ├── calculator_in_bit.py
    │       └── calculator_in_bit__test.py
    ├── complexity_analysis.md
    ├── dynamic_programming/
    │   └── README.md
    ├── graph/
    │   ├── README.md
    │   └── python/
    │       ├── __init__.py
    │       ├── union_find.py
    │       └── union_find__test.py
    ├── hash/
    │   └── python/
    │       ├── __init__.py
    │       ├── geohash.py
    │       ├── geohash__test.py
    │       ├── hashtable.py
    │       └── hashtable__test.py
    ├── heap/
    │   └── python/
    │       ├── __init__.py
    │       ├── binary_hash_heap.py
    │       ├── binary_heap.py
    │       ├── heap__test.py
    │       ├── lazy_removable_heapq.py
    │       └── removable_heapq.py
    ├── language/
    │   ├── javascript/
    │   │   ├── README.md
    │   │   └── traversal.md
    │   ├── php/
    │   │   └── README.md
    │   ├── python/
    │   │   ├── README.md
    │   │   ├── matrix.md
    │   │   ├── runtime_of_builtins.md
    │   │   └── traversal.md
    │   └── sql/
    │       └── README.md
    ├── linked_list/
    │   ├── README.md
    │   └── python/
    │       ├── __init__.py
    │       ├── _helper.py
    │       ├── cyclic_doubly_list.py
    │       ├── cyclic_list.py
    │       ├── dummy_tail_doubly_list.py
    │       ├── dummy_tail_list.py
    │       ├── head_tail_doubly_list.py
    │       ├── head_tail_list.py
    │       ├── linked_list__test.py
    │       ├── two_dummy_doubly_list.py
    │       └── two_dummy_list.py
    ├── problem_set/
    │   ├── subarray_sum.md
    │   └── substring_with_distinct_characters.md
    ├── range_query/
    │   └── python/
    │       ├── __init__.py
    │       ├── _helper.py
    │       ├── binary_indexed_tree.py
    │       ├── interval_tree.py
    │       ├── prefix_sum.py
    │       ├── range_tree.py
    │       └── segment_tree.py
    ├── searching/
    │   ├── binary_search.md
    │   └── python/
    │       ├── __init__.py
    │       └── _helper.py
    ├── sorting/
    │   └── python/
    │       ├── __init__.py
    │       ├── _helper.py
    │       ├── merge_sort.py
    │       ├── quick_sort.py
    │       └── sorting__test.py
    ├── system_design/
    │   └── latency.md
    ├── traversal/
    │   └── python/
    │       ├── __init__.py
    │       ├── _helper.py
    │       ├── binary_tree_traversal__test.py
    │       ├── iterative_traversal.py
    │       ├── morris_traversal.py
    │       └── recursive_traversal.py
    └── tree/
        ├── binary_tree.md
        └── python/
            ├── __init__.py
            ├── _helper.py
            ├── binary_tree.py
            ├── binary_tree__test.py
            ├── trie.py
            └── trie__test.py