├── .coveragerc ├── .gitignore ├── .travis.yml ├── CODE_OF_CONDUCT.md ├── CONTRIBUTING.md ├── LICENSE ├── README.md ├── README_CN.md ├── arrays ├── __init__.py ├── delete_nth.py ├── flatten.py ├── garage.py ├── josephus_problem.py ├── longest_non_repeat.py ├── merge_intervals.py ├── missing_ranges.py ├── move_zeros_to_end.py ├── plus_one.py ├── rotate_array.py ├── summary_ranges.py ├── three_sum.py └── two_sum.py ├── backtrack ├── anagram.py ├── array_sum_combinations.py ├── combination_sum.py ├── expression_add_operators.py ├── factor_combinations.py ├── general_solution.md ├── generate_abbreviations.py ├── generate_parenthesis.py ├── letter_combination.py ├── palindrome_partitioning.py ├── pattern_match.py ├── permute.py ├── permute_unique.py ├── subsets.py ├── subsets_unique.py └── word_search.py ├── bfs ├── shortest_distance_from_all_buildings.py └── word_ladder.py ├── bit ├── __init__.py ├── add_bitwise_operator.py ├── bit_operation.py ├── bytes_int_conversion.py ├── count_ones.py ├── find_difference.py ├── find_missing_number.py ├── has_alternative_bit.py ├── insert_bit.py ├── power_of_two.py ├── remove_bit.py ├── reverse_bits.py ├── single_number.py ├── single_number2.py ├── single_number3.py ├── subsets.py └── swap_pair.py ├── calculator └── math_parser.py ├── dfs ├── all_factors.py ├── count_islands.py ├── pacific_atlantic.py ├── sudoku_solver.py └── walls_and_gates.py ├── dp ├── buy_sell_stock.py ├── climbing_stairs.py ├── coin_change.py ├── combination_sum.py ├── egg_drop.py ├── house_robber.py ├── job_scheduling.py ├── knapsack.py ├── longest_increasing.py ├── matrix_chain_order.py ├── max_product_subarray.py ├── max_subarray.py ├── min_cost_path.py ├── num_decodings.py ├── regex_matching.py ├── rod_cut.py └── word_break.py ├── graph ├── Transitive_Closure_DFS.py ├── __init__.py ├── checkDiGraphStronglyConnected.py ├── clone_graph.py ├── cycle_detection.py ├── dijkstra.py ├── find_all_cliques.py ├── find_path.py ├── graph.py ├── markov_chain.py ├── minimum_spanning_tree.py ├── pathBetweenTwoVerticesInDiGraph.py ├── satisfiability.py ├── tarjan.py └── traversal.py ├── heap ├── __init__.py ├── binary_heap.py ├── merge_sorted_k_lists.py ├── skyline.py └── sliding_window_max.py ├── linkedlist ├── __init__.py ├── add_two_numbers.py ├── copy_random_pointer.py ├── delete_node.py ├── first_cyclic_node.py ├── intersection.py ├── is_cyclic.py ├── is_palindrome.py ├── is_sorted.py ├── kth_to_last.py ├── linkedlist.py ├── merge_two_list.py ├── partition.py ├── remove_duplicates.py ├── remove_range.py ├── reverse.py ├── rotate_list.py └── swap_in_pairs.py ├── map ├── hashtable.py ├── longest_common_subsequence.py ├── randomized_set.py ├── separate_chaining_hashtable.py └── valid_sudoku.py ├── maths ├── __init__.py ├── base_conversion.py ├── extended_gcd.py ├── gcd.py ├── generate_strobogrammtic.py ├── is_strobogrammatic.py ├── next_bigger.py ├── next_perfect_square.py ├── nth_digit.py ├── prime_check.py ├── primes_sieve_of_eratosthenes.py ├── pythagoras.py ├── rabin_miller.py ├── rsa.py ├── sqrt_precision_factor.py └── summing_digits.py ├── matrix ├── bomb_enemy.py ├── copy_transform.py ├── count_paths.py ├── matrix_rotation.txt ├── rotate_image.py ├── search_in_sorted_matrix.py ├── sparse_dot_vector.py ├── sparse_mul.py ├── spiral_traversal.py └── sudoku_validator.py ├── queues ├── __init__.py ├── max_sliding_window.py ├── moving_average.py ├── priority_queue.py ├── queue.py ├── reconstruct_queue.py └── zigzagiterator.py ├── requirements.txt ├── search ├── __init__.py ├── binary_search.py ├── find_min_rotate.py ├── first_occurance.py ├── last_occurance.py ├── search_insert.py ├── search_range.py ├── search_rotate.py └── two_sum.py ├── set ├── randomized_set.py └── set_covering.py ├── setup.py ├── sort ├── __init__.py ├── bubble_sort.py ├── comb_sort.py ├── counting_sort.py ├── heap_sort.py ├── insertion_sort.py ├── meeting_rooms.py ├── merge_sort.py ├── quick_sort.py ├── selection_sort.py ├── sort_colors.py ├── topsort.py └── wiggle_sort.py ├── stack ├── __init__.py ├── is_consecutive.py ├── is_sorted.py ├── longest_abs_path.py ├── ordered_stack.py ├── remove_min.py ├── simplify_path.py ├── stack.py ├── stutter.py ├── switch_pairs.py └── valid_parenthesis.py ├── strings ├── add_binary.py ├── breaking_bad.py ├── decode_string.py ├── delete_reoccurring.py ├── domain_extractor.py ├── encode_decode.py ├── fizzbuzz.py ├── group_anagrams.py ├── int_to_roman.py ├── is_palindrome.py ├── license_number.py ├── make_sentence.py ├── merge_string_checker.py ├── multiply_strings.py ├── one_edit_distance.py ├── rabin_karp.py ├── reverse_string.py ├── reverse_vowel.py ├── reverse_words.py ├── roman_to_int.py ├── strip_url_params.py ├── validate_coordinates.py └── word_squares.py ├── tests ├── __init__.py ├── test_array.py ├── test_bit.py ├── test_graph.py ├── test_heap.py ├── test_linkedlist.py ├── test_maths.py ├── test_queues.py ├── test_search.py ├── test_sort.py ├── test_stack.py └── test_strings.py ├── tree.md ├── tree ├── avl │ ├── __init__.py │ └── avl.py ├── binary_tree_paths.py ├── bintree2list.py ├── bst │ ├── BSTIterator.py │ ├── array2bst.py │ ├── bst.py │ ├── bst_closest_value.py │ ├── count_left_node.py │ ├── delete_node.py │ ├── depth_sum.py │ ├── height.py │ ├── is_bst.py │ ├── kth_smallest.py │ ├── lowest_common_ancestor.py │ ├── num_empty.py │ ├── predecessor.py │ ├── serialize_deserialize.py │ ├── successor.py │ └── unique_bst.py ├── deepest_left.py ├── invert_tree.py ├── is_balanced.py ├── is_subtree.py ├── is_symmetric.py ├── longest_consecutive.py ├── lowest_common_ancestor.py ├── max_height.py ├── max_path_sum.py ├── min_height.py ├── path_sum.py ├── path_sum2.py ├── pretty_print.py ├── red_black_tree │ └── red_black_tree.py ├── same_tree.py ├── segment_tree │ └── segment_tree.py ├── traversal │ ├── inorder.py │ ├── level_order.py │ └── zigzag.py ├── tree.py └── trie │ ├── add_and_search.py │ └── trie.py └── union-find └── count_islands.py /.coveragerc: 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