Pythonic Data Structures and Algorithms

Minimal and clean example implementations of data structures and algorithms in Python.

List of Implementations

• array
  • circular_counter
  • flatten
  • garage
  • longest_non_repeat
  • merge_intervals
  • missing_ranges
  • plus_one
  • rotate_array
  • summary_ranges
  • three_sum
  • two_sum
• backtrack
  • general_solution.md
  • anagram
  • array_sum_combinations
  • combination_sum
  • expression_add_operators
  • factor_combinations
  • generate_abbreviations
  • generate_parenthesis
  • letter_combination
  • palindrome_partitioning
  • pattern_match
  • permute
  • permute_unique
  • subsets
  • subsets_unique
• bfs
  • shortest_distance_from_all_buildings
  • word_ladder
• bit
  • count_ones
  • power_of_two
  • reverse_bits
  • single_number2
  • single_number
  • subsets
  • add_without_operator
• dfs
  • all_factors
  • count_islands
  • pacific_atlantic
  • sudoku_solver
  • walls_and_gates
• dp
  • buy_sell_stock
  • climbing_stairs
  • combination_sum
  • house_robber
  • longest_increasing
  • max_product_subarray
  • max_subarray
  • num_decodings
  • regex_matching
  • word_break
• graph
  • clone_graph
  • find_path
  • graph
  • traversal
• heap
  • merge_sorted_k_lists
  • skyline
  • sliding_window_max
• linkedlist
  • add_two_numbers
  • copy_random_pointer
  • delete_node
  • first_cyclic_node
  • is_cyclic
  • is_palindrome
  • kth_to_last
  • linkedlist
  • remove_duplicates
  • reverse
  • rotate_list
  • swap_in_pairs
• map
  • hashtable
  • longest_common_subsequence
  • randomized_set
  • valid_sudoku
• math
  • extended_gcd
  • gcd
  • prime_test
  • primes_sieve_of_eratosthenes
  • generate_strobogrammtic
  • is_strobogrammatic
  • nth_digit
  • rabin_miller
  • rsa
  • sqrt_precision_factor
  • pythagoras
• matrix
  • matrix_rotation.txt
  • bomb_enemy
  • rotate_image
  • sparse_dot_vector
  • sparse_mul
  • spiral_traversal
• queue
  • max_sliding_window
  • moving_average
  • queue
  • reconstruct_queue
  • zigzagiterator
• search
  • binary_search
  • count_elem
  • first_occurance
  • last_occurance
• set
  • randomized_set
• sort
  • insertion_sort
  • meeting_rooms
  • merge_sort
  • quick_sort
  • selection_sort
  • sort_colors
  • topsort
  • wiggle_sort
• stack
  • longest_abs_path
  • simplify_path
  • stack
  • valid_parenthesis
• string
  • add_binary
  • breaking_bad
  • decode_string
  • encode_decode
  • group_anagrams
  • int_to_roman
  • is_palindrome
  • license_number
  • make_sentence
  • multiply_strings
  • one_edit_distance
  • rabin_karp
  • reverse_string
  • reverse_vowel
  • reverse_words
  • roman_to_int
  • word_squares
• tree
  • segment-tree
    • segment_tree
  • binary_tree_paths
  • bintree2list
  • bst
    • array2bst
    • bst_closest_value
    • BSTIterator
    • delete_node
    • is_bst
    • kth_smallest
    • lowest_common_ancestor
    • predecessor
    • serialize_deserialize
    • successor
    • unique_bst
  • deepest_left
  • invert_tree
  • is_balanced
  • is_subtree
  • is_symmetric
  • longest_consecutive
  • lowest_common_ancestor
  • max_height
  • max_path_sum
  • min_height
  • path_sum2
  • path_sum
  • pretty_print
  • same_tree
  • traversal
    • inorder
    • level_order
    • zigzag
  • tree
  • trie
    • add_and_search
    • trie
• union-find
  • count_islands

List of Designs

• design
  • alarm_system
  • all_o_one_ds
  • calculator
  • excel_table
  • LRUcache
  • nearby_drivers
  • ride_sharing
  • task_runner
  • twitter_feeds